@misc{MoellmannVollmer2014, author = {M{\"o}llmann, Klaus-Peter and Vollmer, Michael}, title = {The Basics Science and History of Thermal Imaging}, year = {2014}, language = {en} } @article{WangHarthPuzyrevetal.2022, author = {Wang, Jing and Harth, Kirsten and Puzyrev, Dmitry and Stannarius, Ralf}, title = {The effect of obstacles near a silo outlet on the discharge of soft spheres}, series = {New Journal of Physics}, volume = {24}, journal = {New Journal of Physics}, publisher = {IOP}, doi = {10.1088/1367-2630/ac8bea}, year = {2022}, language = {en} } @article{Vollmer2022, author = {Vollmer, Michael}, title = {The evolution of IR imaging: What's next?}, series = {Laser Focus World Magazine}, journal = {Laser Focus World Magazine}, publisher = {endeavor business media}, pages = {23 -- 26}, year = {2022}, abstract = {The vast majority of all human sensory inputs occur through our eyes. Light from direct sources or scattered light from objects enters our eyes and is focused onto the retina. The resulting signals are interpreted by the brain, which leads to the perception of the image of the observed objects. Although quite efficient for our daily life, many technological applications require sensor properties beyond the characteristics of our eyes. A major limitation regarding microscopic objects is spatial resolution, which is overcome by microscopes. Time resolution can be dealt with using either time-lapse or high-speed cameras. Finally, eyes only detect visible radiation within the wavelength range from about 380 nm to 780 nm. Changing the detected spectral range of electromagnetic radiation can dramatically enhance our vision. Shorter wavelengths such as x-rays are valuable tools for medical imaging, while ultraviolet (UV) imaging is used for forensics. Longer-wavelength thermal radiation used for imaging is often defined within spectral ranges, characterized by the photoelectric detector materials used and the respective atmospheric windows.}, language = {de} } @article{AmanAmanHintzetal.2017, author = {Aman, Sergej and Aman, Alexander and Hintz, Werner and Tr{\"u}e, Michael and Veit, Peter and Hirsch, S{\"o}ren}, title = {The Exfoliation of Graphite Particles in the Vibratory Disk Mill}, series = {Chemie Ingenieur Technik}, volume = {89}, journal = {Chemie Ingenieur Technik}, number = {9}, doi = {10.1002/cite.201600124}, pages = {1185 -- 1191}, year = {2017}, language = {en} } @article{Vollmer2019, author = {Vollmer, Michael}, title = {The freezing of lakes in winter}, series = {European Journal of Physics}, journal = {European Journal of Physics}, number = {Ausgabe: 3/ Band: 40}, publisher = {IOP Publishing}, issn = {1367-2630}, doi = {10.1088/1361-6404/ab07f8}, year = {2019}, abstract = {Freezing of lakes is described using a simplified one-dimensional model, which gives ice thickness, ice growth rates, and ice surface temperature as a function of time. Model data for a specific lake with known meteorological conditions are compared to estimated ice thickness using a simple optical method. Finally, more advanced potential students projects are briefly discussed and results of a numerical solution are compared to the simplified model.}, language = {en} } @inproceedings{VollmerMoellmann2013, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {The magic of the invisible: using IR imaging in physics education}, series = {In: InfraMation proceedings / Infrared Training Center. - Vol. 14 (2013)}, booktitle = {In: InfraMation proceedings / Infrared Training Center. - Vol. 14 (2013)}, year = {2013}, language = {en} } @misc{Vollmer2013, author = {Vollmer, Michael}, title = {The magic of the invisible: using IR imaging in physics education}, year = {2013}, language = {en} } @article{VollmerMoellmannShaw2015, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter and Shaw, Joseph A.}, title = {The optics and physics of near infrared imaging}, series = {Proceedings of SPIE 9793, Education and Training in Optics and Photonics: ETOP 2015, 97930Z (October 8, 2015)}, journal = {Proceedings of SPIE 9793, Education and Training in Optics and Photonics: ETOP 2015, 97930Z (October 8, 2015)}, doi = {10.1117/12.2223094}, year = {2015}, abstract = {abstract A large part of photonics research and development, as well as commercial applications such as optical data transmission or infrared thermal imaging, occurs in the infrared spectral range between 0.8 μm and 15 μm. However, relatively little material is so far available for experimentally teaching the physics and optics of this spectral range. We report a respective new approach in the near infrared (NIR) range between 0.8 μm and 1.7 μm that allows visualization of a number of fascinating physics phenomena. First, we use the near-infrared sensitivity of silicon-based detectors in rather inexpensive video cameras and digital single-lens reflex cameras by removing the infrared-blocking filter and replacing it with a visible-radiation blocking filter. Second, we utilize modern NIR cameras based on InGaAs detectors. With both camera types we illustrate and explain a number of physics concepts that are especially suitable for curricula in optics and photonics. Examples include the strangely bright appearance of vegetation, contrast enhancement between clouds and sky, the initially surprising differences of optical material properties between the VIS and NIR range, the possibilities of visualizing buried hidden structures and texts, and recent medical applications to locate blood vessels below the skin. © (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.}, language = {en} } @article{LachowskiHammermeisterHalenzetal.2023, author = {Lachowski, Krzysztof and Hammermeister, Florian and Halenz, Bastian and Lieckefett, Florian and G{\"o}tze, Thomas and Prill, Robert and Becker, Roland}, title = {The Patellostabilometer: A New Device for Quantification of Mediolateral Patella Displacement}, series = {Sensors}, journal = {Sensors}, number = {23 (3)}, publisher = {MDPI}, doi = {https://doi.org/10.3390/s23031274}, year = {2023}, abstract = {Mediolateral patella displacement is of interest for diagnostics and clinically relevant research questions. Apart from manual testing, no standardized method is currently available. Proper quantification of patella mobility is necessary to better understand pathologies at the patellofemoral joint. Patella mobility was assessed in 25 healthy individuals using a Patellostabilometer, a new prototype instrument for quantification of the mediolateral patella displacement. The participants underwent measurements of the mediolateral displacement three times using the Patellostabilome- ter. A maximal force of 10 N was applied for patella movement. Additionally, leg length and circumference of the knee, upper- and lower-leg were measured. Lateral patella displacement of 18.27 ± 3.76 mm (range 15.85-20.64 mm, interquartile range (IQR) of 4.79) was measured. The medial patella displacement showed 24.47 ± 6.59 mm (range 19.29-29.76 mm, IQR of 10.47). The test-retest measurement error was 2.32 ± 1.76 mm (IQR of 2.38 mm), with five outliers. There was greater test-retest variability between the measurements of the medial displacement compared to the lateral one. The test-retest variability reached 7\% of the patella displacement. Other parameters provided no significant correlations. Based on the natural patellofemoral mobility, a precise and clinically relevant quantification of patella mobility is allowed.}, language = {en} } @article{MangoldShawVollmer2013, author = {Mangold, Klaus and Shaw, Joseph A. and Vollmer, Michael}, title = {The physics of near-infrared photography}, series = {In: European journal of physics 34 (2013) 6, S51-S71}, journal = {In: European journal of physics 34 (2013) 6, S51-S71}, doi = {doi:10.1088/0143-0807/34/6/S51}, pages = {S51 -- S71}, year = {2013}, abstract = {The physics behind the sometimes strange effects and 'unnatural' appearance of near-infrared (NIR) photographs is discussed in terms of reflection, absorption and transmission of NIR radiation with the respective objects. Besides discussing how NIR cameras work, several visible and NIR photograph pairs are presented, which include vegetation, natural water, clouds, the sky, and humans. In addition, some physics-oriented experimental NIR images are presented which clearly demonstrate some of the basic physics behind some of these awesome sights.}, language = {en} } @article{StannariusHarth2023, author = {Stannarius, Ralf and Harth, Kirsten}, title = {The structure of disintegrating defect clusters in smectic C freely suspended films}, series = {Soft Matter}, journal = {Soft Matter}, number = {19}, publisher = {Royal Society of Chemistry}, doi = {https://doi.org/10.1039/d3sm00808h}, pages = {6109 -- 6115}, year = {2023}, abstract = {Disclinations or disclination clusters in smectic C freely suspended films with topological charges larger than one are unstable. They disintegrate, preferably in a spatially symmetric fashion, into single defects with individual charges of +1, which is the smallest positive topological charge allowed in polar vector fields. While the opposite process of defect annihilation is well-defined by the initial defect positions, disintegration starts from a singular state and the following scenario including the emerging regular defect patterns must be selected by specific mechanisms. We analyze experimental data and compare them with a simple model where the defect clusters adiabatically pass quasi-equilibrium solutions in one-constant approximation. It is found that the defects arrange in geometrical patterns that correspond very closely to superimposed singular defect solutions, without additional director distortions. The patterns expand by affine transformations where all distances between individual defects scale with the same time-dependent scaling factor proportional to the square-root of time.}, language = {en} } @article{PlaninsicVollmer2008, author = {Planinsic, G. and Vollmer, Michael}, title = {The surface to volume ratio in thermal physics: from cheese cube physics to animal metabolism}, series = {In: European Journal of Physics 29 (2008), 369-384}, journal = {In: European Journal of Physics 29 (2008), 369-384}, issn = {0143-0807}, pages = {369 -- 384}, year = {2008}, language = {en} } @article{VollmerMoellmann2015, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {The tablecloth pull revisited}, series = {Physics Education 50 (2015) 3}, journal = {Physics Education 50 (2015) 3}, pages = {324 -- 328}, year = {2015}, abstract = {Abstract A very old and well-known magical trick is the so-called tablecloth pull. A table is covered with a tablecloth, on top of which are certain objects. The task is to remove the tablecloth while the objects—which must not be touched—stay on top of the table. This article describes the physics behind the experiment, and presents examples recorded with high-speed cameras.}, language = {en} } @misc{Moellmann2013, author = {M{\"o}llmann, Klaus-Peter}, title = {Theorie und Praxis der Strahlungsthermometrie}, year = {2013}, language = {de} } @misc{Vollmer2002, author = {Vollmer, Michael}, title = {There is more to see than eyes can detect}, year = {2002}, language = {en} } @article{KarstaedtMoellmannPinnoetal.2001, author = {Karst{\"a}dt, Detlef and M{\"o}llmann, Klaus-Peter and Pinno, Frank and Vollmer, Michael}, title = {There is more to see than eyes can detect : visualization of energy transfer processes and the laws of radiation for physics education}, series = {In: The Physics Teacher 39 (2001), 371-376}, journal = {In: The Physics Teacher 39 (2001), 371-376}, pages = {371 -- 376}, year = {2001}, language = {en} } @article{KarstaedtMoellmannPinnoetal.2001, author = {Karst{\"a}dt, Detlef and M{\"o}llmann, Klaus-Peter and Pinno, Frank and Vollmer, Michael}, title = {There is more to see than eyes can detect: visualization of energy transfer processes and the laws of radiation for physics education}, series = {In: The Physics Teacher 39 (2001), 371-376}, journal = {In: The Physics Teacher 39 (2001), 371-376}, pages = {371 -- 376}, year = {2001}, language = {en} } @inproceedings{MoellmannVollmer2012, author = {M{\"o}llmann, Klaus-Peter and Vollmer, Michael}, title = {Thermal effects due to focused light from glass fronts}, series = {InfraMation proceedings. - Vol. 13 (2012)}, booktitle = {InfraMation proceedings. - Vol. 13 (2012)}, year = {2012}, language = {de} } @inproceedings{MoellmannKarstaedtPinnoetal.2006, author = {M{\"o}llmann, Klaus-Peter and Karst{\"a}dt, Detlef and Pinno, Frank and Vollmer, Michael}, title = {Thermal image quality - Visualization of spatial and thermal resolution in thermal imaging}, series = {In: InfraMation proceedings Vol. 7 (2006), 79-92}, booktitle = {In: InfraMation proceedings Vol. 7 (2006), 79-92}, pages = {79 -- 92}, year = {2006}, language = {en} } @techreport{KueglerMoellerGoeckeetal.2015, author = {K{\"u}gler, H. and M{\"o}ller, F. and Goecke, Sven-Frithjof and Vollertsen, F.}, title = {Thermisches F{\"u}gen h{\"o}chstfester St{\"a}hle}, series = {Schweissen und Schneiden}, volume = {67}, journal = {Schweissen und Schneiden}, number = {12}, issn = {0036-7184}, pages = {744}, year = {2015}, language = {de} } @article{VollmerMoellmann2013, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Thermodynamics of gases: combustion processes, analyzed in slow motion}, series = {In: Physics Education 48 (2013) 1, 22-27}, journal = {In: Physics Education 48 (2013) 1, 22-27}, pages = {22 -- 27}, year = {2013}, language = {en} } @article{VollmerMoellmann2008, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Thermographie : Grundlagen, Forschung und moderne Anwendungen in Industrie und Technik}, series = {In: Praxis der Naturwissenschaften - Physik in der Schule 57 (2008) 8, 5-14}, journal = {In: Praxis der Naturwissenschaften - Physik in der Schule 57 (2008) 8, 5-14}, pages = {5 -- 14}, year = {2008}, language = {de} } @misc{VollmerMoellmann2013, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Thermographie im Physikunterricht}, year = {2013}, language = {de} } @inproceedings{MoellmannLutzVollmeretal.2004, author = {M{\"o}llmann, Klaus-Peter and Lutz, Norbert and Vollmer, Michael and Wille, Ch.}, title = {Thermography of Microsystems}, series = {In: InfraMation proceedings Vol. 5 (2004), 183-196}, booktitle = {In: InfraMation proceedings Vol. 5 (2004), 183-196}, pages = {183 -- 196}, year = {2004}, language = {en} } @misc{Vollmer2005, author = {Vollmer, Michael}, title = {Thermography of microwave ovens}, year = {2005}, language = {en} } @inproceedings{PinnoMoellmannVollmer2008, author = {Pinno, Frank and M{\"o}llmann, Klaus-Peter and Vollmer, Michael}, title = {Thermography of window panes - problems, possibilities and troubleshooting}, series = {In: InfraMation proceedings Vol. 9 (2008), 355-362}, booktitle = {In: InfraMation proceedings Vol. 9 (2008), 355-362}, pages = {355 -- 362}, year = {2008}, language = {en} } @article{VollmerMoellmann2017, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Thomsons fliegender Ring: altbekannt, doch trickreich}, series = {Physik in unserer Zeit}, volume = {48}, journal = {Physik in unserer Zeit}, number = {5}, doi = {10.1002/piuz.201701490}, pages = {251 -- 253}, year = {2017}, language = {de} } @article{OertelLiuZhouetal.2018, author = {Oertel, Christian and Liu, Zhe and Zhou, Fuqiang and Wei, Yintao}, title = {Three-dimensional vibration of a ring with a noncircular cross-section on an elastic foundation}, series = {Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science}, volume = {232}, journal = {Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science}, number = {13}, doi = {10.1177/0954406217720823}, pages = {2381 -- 2393}, year = {2018}, language = {en} } @inproceedings{MoellmannVollmerKarstaedt1999, author = {M{\"o}llmann, Klaus-Peter and Vollmer, Michael and Karst{\"a}dt, Detlef}, title = {Tieftemperaturexperimente in der Experimentalphysikausbildung an Hochschulen: Experimente mit fl{\"u}ssigem Stickstoff in der Hochschullehre}, series = {In: Fr{\"u}hjahrstagung des Fachverbands Didaktik der Physik in der Deutschen Physikalischen Gesellschaft, Ludwigsburg 1999 ; zus{\"a}tzlich mit den Beitr{\"a}gen des Lehrertages und der Kunstausstellung bei der Fr{\"u}hjahrstagung 1999 des Arbeitskreises Festk{\"o}rperphysik in M{\"u}nster. - Berlin : Lehmann, 1999. - 1 CD-ROM. - ISBN 3-931253-41-4}, booktitle = {In: Fr{\"u}hjahrstagung des Fachverbands Didaktik der Physik in der Deutschen Physikalischen Gesellschaft, Ludwigsburg 1999 ; zus{\"a}tzlich mit den Beitr{\"a}gen des Lehrertages und der Kunstausstellung bei der Fr{\"u}hjahrstagung 1999 des Arbeitskreises Festk{\"o}rperphysik in M{\"u}nster. - Berlin : Lehmann, 1999. - 1 CD-ROM. - ISBN 3-931253-41-4}, year = {1999}, language = {de} } @article{VollmerMoellmann2018, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Time-lapse videos for physics education: specific examples}, series = {Physics Education}, volume = {53}, journal = {Physics Education}, number = {3}, doi = {10.1088/1361-6552/aab6cf}, pages = {033007 -- 033007}, year = {2018}, language = {en} } @article{OertelFandre2009, author = {Oertel, Christian and Fandre, A.}, title = {Tire Model RMOD-K 7 and Misuse Load Cases}, series = {In: SAE technical papers 2009-01-0582}, journal = {In: SAE technical papers 2009-01-0582}, year = {2009}, abstract = {Among load cases concerning vehicle suspension strength and durability, the misuse case is very special because of large obstacles. In this paper, an extension of the flexible belt model RMOD-K 7 concerning misuse situations is discussed. In normal rolling conditions, contact occurs between tire and road surface. To handle misuse deformations, the contact between the inner surface of the tire and the rim has to be dealt with. Results of the validation process are shown, leading to normal forces up to 70 [kN]. The model can be used together with mbs full vehicle models. One example is the determination of the critical test velocity, which generates the maximum of suspension stresses and can be found using RMOD-K 7.}, language = {en} } @article{OertelHempel2014, author = {Oertel, Christian and Hempel, J.}, title = {Tire Model Toolbox. University Focus}, series = {Tire technology international}, journal = {Tire technology international}, issn = {1462-4729}, pages = {62 -- 65}, year = {2014}, language = {en} } @incollection{RevinaRizunAksu2023, author = {Revina, Aleksandra and Rizun, Nina and Aksu, {\"U}nal}, title = {Towards a Framework for Context Awareness Based on Textual Process Data: Case Study Insights}, series = {Lecture Notes in Business Information Processing}, booktitle = {Lecture Notes in Business Information Processing}, number = {466}, publisher = {Springer Cham}, isbn = {978-3-031-26885-4 (Print) 978-3-031-26886-1 (online)}, doi = {https://doi.org/10.1007/978-3-031-26886-1_2}, year = {2023}, abstract = {Context awareness is critical for the successful execution of processes. In the abundance of business process management (BPM) research, frameworks exclusively devoted to extracting context from textual process data are scarce. With the deluge of textual data and its increasing value for organizations, it becomes essential to employ relevant text analytics techniques to increase the awareness of process workers, which is important for process execution. The present paper addresses this demand by developing a framework for context awareness based on process executions-related textual data using a well-established layered BPM context model. This framework combines and maps various text analytics techniques to the layers of the context model, aiming to increase the context awareness of process workers and facilitate informed decision-making. The framework is applied in an IT ticket processing case study. The findings show that contextual information obtained using our framework enriches the awareness of process workers regarding the process instance urgency, complexity, and upcoming tasks and assists in making decisions in terms of these aspects.}, language = {en} } @inproceedings{GoeckeEbertSpiegel2015, author = {Goecke, Sven-Frithjof and Ebert-Spiegel, Michael}, title = {Towards a More Robust Automated MAG Welding}, series = {2015 IEEE International Conference on Automation Science and Engineering (CASE) : 24 - 28 Aug. 2015, Gothenburg, Sweden}, booktitle = {2015 IEEE International Conference on Automation Science and Engineering (CASE) : 24 - 28 Aug. 2015, Gothenburg, Sweden}, publisher = {IEEE}, address = {Piscataway, NJ}, doi = {10.1109/coase.2015.7294114}, pages = {417 -- 418}, year = {2015}, language = {en} } @article{FlassigMangoldWoelfer2019, author = {Flassig, Robert J. and Mangold, Michael and W{\"o}lfer, Christian}, title = {Towards Design of Self-Organizing Biomimetic Systems}, series = {Advanced Biosystems}, volume = {3}, journal = {Advanced Biosystems}, number = {6}, publisher = {Wiley}, issn = {2366-7478}, doi = {/10.1002/adbi.201800320}, pages = {1800320}, year = {2019}, language = {en} } @article{OseevMukhinLucklumetal.2018, author = {Oseev, Aleksandr and Mukhin, Nikolay V. and Lucklum, Ralf and Zubtsov, Mikhail and Schmidt, Marc-Peter and Redka, Dmitrii and Kozyrev, Andrey and Hirsch, S{\"o}ren}, title = {Towards macroporous phononic crystal based structures for FBAR applications. Theoretical investigation of technologically competitive solutions}, series = {Microsystem Technologies}, volume = {24}, journal = {Microsystem Technologies}, number = {5}, doi = {10.1007/s00542-017-3616-1}, pages = {2389 -- 2399}, year = {2018}, language = {en} } @article{ChaurasiaGoeckeDe2023, author = {Chaurasia, Prashant Kumar and Goecke, Sven Frithjof and De, Amitava}, title = {Towards real-time monitoring of metal transfer and melt pool temperature field in gas metal arc directed energy deposition}, series = {Welding in the World}, journal = {Welding in the World}, number = {67}, publisher = {Springer Link}, doi = {https://doi.org/10.1007/s40194-023-01534-2}, pages = {1781 -- 1791}, year = {2023}, abstract = {Large three-dimensional metallic parts can be printed layer-by-layer using gas metal arc directed energy deposition (GMA-DED) process at a high deposition rate and with little or no material wastage. Fast responsive real-time monitoring of GMA-DED process signatures and their transient variations is required for printing of dimensionally accurate and structurally sound parts. A systematic experimental investigation is presented here on multi-layer GMA-DED with two different scanning strategies using a high strength low alloy (HSLA) filler wire. The dynamic metal transfer, melt pool temperature field and its longitudinal cross-section, and arc voltage and current are monitored synchronously. The transient arc heat input and the melt pool solidification cooling rate are estimated from the monitored signals. The layer-wise variations of the melt pool dimension, surface temperature profile, thermal cycles, and solidification cooling rate are examined for different scanning strategies. It is comprehended that the part defects can be minimized, and the mass production of zero-defect parts can be achieved in GMA-DED process with synchronized monitoring and assessment of the real-time process signatures.}, language = {en} } @inproceedings{Kraska2015, author = {Kraska, Martin}, title = {Transferangebote zum Leichtbau aus Forschung und Lehre an der Fachhochschule Brandenburg}, series = {Metalldialog Ostbrandenburg in Eisenh{\"u}ttenstadt - "Metall trifft Leichtbau", 17.09.2015}, booktitle = {Metalldialog Ostbrandenburg in Eisenh{\"u}ttenstadt - "Metall trifft Leichtbau", 17.09.2015}, year = {2015}, language = {de} } @article{VollmerMoellmann2012, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Tropfen auf dem kalten Wein}, series = {In: Physik in unserer Zeit 43 (2012) 5, 252-253}, journal = {In: Physik in unserer Zeit 43 (2012) 5, 252-253}, doi = {10.1002/piuz.201290081}, pages = {252 -- 253}, year = {2012}, abstract = {Viele kennen die leidvolle Erfahrung: Beim Fr{\"u}hst{\"u}ckstisch gießt man einen Schuss Milch in den Kaffee, und prompt spritzt eine kleine Font{\"a}ne aus der Tasse, und ein Tropfen landet - hier gilt Murphys Gesetz fast immer - auf dem frisch angezogenen Hemd oder mit etwas Gl{\"u}ck nur auf der Tischdecke. Man kann dieses Ph{\"a}nomen unter kontrollierten Bedingungen mit Hochgeschwindigkeits-Kameras analysieren und interessante Physik hinter den Spritzern aufsp{\"u}ren.}, language = {de} } @inproceedings{PlatonovAltynnikovMikhailovetal.2017, author = {Platonov, R. A. and Altynnikov, A. G. and Mikhailov, A. K. and Yastrebov, A. V. and Mukhin, N. V. and Hirsch, S{\"o}ren and Kozyrev, A. B.}, title = {Tunable impedance microwave matching of laser diodes}, series = {Konferenz: 2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)/ Titel: 2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)}, booktitle = {Konferenz: 2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)/ Titel: 2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)}, publisher = {IEEE}, address = {St Petersburg, Russia}, isbn = {978-1-5090-6269-0}, doi = {10.1109/PIERS.2017.8261920}, pages = {1152 -- 1157}, year = {2017}, language = {en} } @article{GedzelmanVollmer2009, author = {Gedzelman, S. D. and Vollmer, Michael}, title = {Twice in a blue moon}, series = {In: Weatherwise 62 (2009) 5, 28-35}, journal = {In: Weatherwise 62 (2009) 5, 28-35}, issn = {0043-1672}, pages = {28 -- 35}, year = {2009}, language = {en} } @inproceedings{MoellmannPinnoVollmer2010, author = {M{\"o}llmann, Klaus-Peter and Pinno, Frank and Vollmer, Michael}, title = {Two-color or ratio thermal imaging - potentials and limits}, series = {In: InfraMation proceedings. - Vol. 11 (2010), pp.41-56}, booktitle = {In: InfraMation proceedings. - Vol. 11 (2010), pp.41-56}, pages = {41 -- 56}, year = {2010}, language = {en} } @article{DaupayevEngelHirsch2025, author = {Daupayev, Nursultan and Engel, Christian and Hirsch, S{\"o}ren}, title = {Two-to-One Trigger Mechanism for Event-Based Environmental Sensing}, series = {Sensors}, volume = {25}, journal = {Sensors}, number = {13}, publisher = {MDPI}, doi = {10.3390/s25134107}, pages = {1 -- 18}, year = {2025}, abstract = {Environmental monitoring systems often operate continuously, measuring various parameters, including carbon dioxide levels (CO2), relative humidity (RH), temperature (T), and other factors that affect environmental conditions. Such systems are often referred to as smart systems because they can autonomously monitor and respond to environmental conditions and can be integrated both indoors and outdoors to detect, for example, structural anomalies. However, these systems typically have high energy consumption, data overload, and large equipment sizes, which makes them difficult to install in constrained spaces. Therefore, three challenges remain unresolved: efficient energy use, accurate data measurement, and compact installation. To address these limitations, this study proposes a two-to-one threshold sampling approach, where the CO2 measurement is activated when the specified T and RH change thresholds are exceeded. This event-driven method avoids redundant data collection, minimizes power consumption, and is suitable for resource-constrained embedded systems. The proposed approach was implemented on a low-power, small-form and self-made multivariate sensor based on the PIC16LF19156 microcontroller. In contrast, a commercial monitoring system and sensor modules based on the Arduino Uno were used for comparison. As a result, by activating only key points in the T and RH signals, the number of CO2 measurements was significantly reduced without loss of essential signal characteristics. Signal reconstruction from the reduced points demonstrated high accuracy, with a mean absolute error (MAE) of 0.0089 and root mean squared error (RMSE) of 0.0117. Despite reducing the number of CO2 measurements by approximately 41.9\%, the essential characteristics of the signal were saved, highlighting the efficiency of the proposed approach. Despite its effectiveness in controlled conditions (in buildings, indoors), environmental factors such as the presence of people, ventilation systems, and room layout can significantly alter the dynamics of CO2 concentrations, which may limit the implementation of this approach. Future studies will focus on the study of adaptive threshold mechanisms and context-dependent models that can adjust to changing conditions. This approach will expand the scope of application of the proposed two-to-one sampling technique in various practical situations.}, language = {en} } @techreport{Oertel2008, author = {Oertel, Christian}, title = {Tyre models in vehicle dynamics: theory and application, part 1: vehicle dynamics tyre model}, year = {2008}, language = {en} } @article{OertelWei2012, author = {Oertel, Christian and Wei, Yintao}, title = {Tyre rolling kinematics and prediction of tyre forces and moments: part I - theory and method}, series = {In: Vehicle system dynamics 50 (2012) 11, 1673-1687}, journal = {In: Vehicle system dynamics 50 (2012) 11, 1673-1687}, doi = {10.1080/00423114.2012.694452}, pages = {1673 -- 1687}, year = {2012}, abstract = {A new method to describe tyre rolling kinematics and how to calculate tyre forces and moments is presented. The Lagrange-Euler method is used to calculate the velocity and contact deformation of a tyre structure under large deformation. The calculation of structure deformation is based on the Lagrange method, while the Euler method is used to analyse the deformation and forces in the contact area. The method to predict tyre forces and moments is built using kinematic theory and nonlinear finite element analysis. A detailed analysis of the tyre tangential contact velocity and the relationships between contact forces, contact areas, lateral forces, and yaw and camber angles has been performed for specific tyres. Research on the parametric sensitivity of tyre lateral forces and self-aligning torque on tread stiffness and friction coefficients is carried out in the second part of this paper.}, language = {en} } @article{WeiOertelShena2012, author = {Wei, Yintao and Oertel, Christian and Shena, Xiaoliang}, title = {Tyre rolling kinematics and prediction of tyre forces and moments: part II - simulation and experiment}, series = {In: Vehicle system dynamics 50 (2012) 11, 1689-1706}, journal = {In: Vehicle system dynamics 50 (2012) 11, 1689-1706}, doi = {10.1080/00423114.2012.694453}, pages = {1689 -- 1706}, year = {2012}, abstract = {There are two aims for the second part of this paper: verifying the theory presented in the first part through parameter variation and comparison between simulation and experiment, and to study the effect of the belt structure on the cornering properties of radial tyres. Research has been carried out with a passenger car radial tyre and two different kinds of truck or bus radial tyres using both simulation and experiment. This second part of the paper shows that belt structure plays an important role in the generation of tyre forces and moments in addition to the effects of the tread stiffness and friction coefficients. The theory and method presented in this paper opens a new robust way to predict the tyre forces and moments from the tyre design and provides a reliable model for a generation mechanism.}, language = {en} } @article{NiehusMoellmannTrulletal.2003, author = {Niehus, Christina and M{\"o}llmann, Klaus-Peter and Trull, Thomas and Vollmer, Michael}, title = {Umweltanalytik mit Atomabsorptions- und Fourier-Transform-Infrarot- Spektroskopie}, series = {In: Praxis der Naturwissenschaften - Physik in der Schule 52 (2003) 4, 29-36}, journal = {In: Praxis der Naturwissenschaften - Physik in der Schule 52 (2003) 4, 29-36}, pages = {29 -- 36}, year = {2003}, language = {de} } @article{VollmerMoellmann2017, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Und es werde Feuer}, series = {Physik in unserer Zeit}, volume = {48}, journal = {Physik in unserer Zeit}, number = {1}, issn = {1521-3943 (Online)}, doi = {10.1002/piuz.201601467}, pages = {43 -- 44}, year = {2017}, language = {de} } @article{VollmerMoellmann2017, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Und es werde Feuer}, series = {Physik in unserer Zeit}, volume = {48}, journal = {Physik in unserer Zeit}, number = {2}, issn = {1521-3943 (Online)}, doi = {10.1002/piuz.201701474}, pages = {96 -- 97}, year = {2017}, language = {de} } @article{VollmerMoellmann2018, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Und sie dreht sich doch …}, series = {Physik in unserer Zeit}, volume = {49}, journal = {Physik in unserer Zeit}, number = {5}, doi = {10.1002/piuz.201801525}, pages = {254 -- 254}, year = {2018}, language = {de} } @misc{Kraska2014, author = {Kraska, Martin}, title = {Universalberechnungssoftware SMath Studio f{\"u}r technische Berechnungen im Studiengang Maschinenbau \& Virtuelle Mechanik-Experimente}, year = {2014}, language = {de} } @article{Edel2007, author = {Edel, Karl-Otto}, title = {Universit{\"a}ten sind Veranstaltungen des Staates}, series = {Brandenburger Wochenblatt : BRAWO (11. Juni 2007)}, journal = {Brandenburger Wochenblatt : BRAWO (11. Juni 2007)}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:522-opus4-16069}, pages = {7}, year = {2007}, language = {de} } @article{OgashawaraWollrabBergeretal.2024, author = {Ogashawara, Igor and Wollrab, Sabine and Berger, Stella A. and Kiel, Christine and Jechow, Andreas and Guislain, Alexis L. N. and Gege, Peter and Ruhtz, Thomas and Hieronymi, Martin and Schneider, Thomas and Lischeid, Gunnar and Singer, Gabriel A. and H{\"o}lker, Franz and Grossart, Hans-Peter and Nejstgaard, Jens Christian}, title = {Unleashing the power of remote sensing data in aquatic research: Guidelines for optimal utilization}, series = {Limnology and Oceanography Letters}, journal = {Limnology and Oceanography Letters}, publisher = {Wiley}, doi = {10.1002/lol2.10427}, pages = {1 -- 7}, year = {2024}, abstract = {The growing utilization of remote sensing data in lake studies provides crucial spatial insights into biogeochemistry and biology. However, clarity regarding the development and intended use of remote sensing products is often lacking. This letter aims to elucidate the tradeoffs for the utilization of remote sensing data in limnological studies with an example of based on the estimation of chlorophyll a due to its importance as a water quality indicator. The analysis initiates with a meticulous product selection, requiring an evaluation of its capacity to address the optical complexity of freshwater systems. Assessing atmospheric correction and product limitations ensures alignment with the study's objectives. Subsequently, rigorous validation of remote sensing products is essential, accompanied by a cautious interpretation of the data. This letter advocates for the use of remote sensing data, offering key strategies for their optimal utilization in lake studies.}, language = {en} } @article{Vollmer2000, author = {Vollmer, Michael}, title = {Unschuldige Schule! : In den vergangenen Jahren hat zwar die Zahl der Physikstudenten dramatisch abgenommen, nicht aber die Zahl der Sch{\"u}ler, die in der Oberstufe Physik w{\"a}hlen}, series = {In: Physikalische Bl{\"a}tter 56 (2000) 6, 21-22}, journal = {In: Physikalische Bl{\"a}tter 56 (2000) 6, 21-22}, doi = {10.1002/phbl.20000560606}, pages = {21 -- 22}, year = {2000}, language = {de} } @article{VollmerMoellmann2020, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Unsichtbares sichtbar gemacht: Infrarotkameras f{\"u}r Smartphones}, series = {Physik in unserer Zeit}, volume = {51}, journal = {Physik in unserer Zeit}, number = {1}, publisher = {Wiley-VCH}, doi = {https://doi.org/10.1002/piuz.201901551}, pages = {29 -- 35}, year = {2020}, language = {de} } @techreport{Schugardt2023, author = {Schugardt, Alexander}, title = {Untersuchung der Rotorfestigkeit von permanenterregten Synchronmaschinen mit vergrabenen Magneten}, publisher = {Technische Hochschule Brandenburg}, address = {Brandenburg an der Havel}, doi = {10.25933/opus4-2961}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:522-opus4-29610}, pages = {34}, year = {2023}, abstract = {Diese Projektarbeit behandelt die mechanische Simulation der Rotoren von permanenterregten Synchronmaschinen f{\"u}r den Festigkeitsnachweis. Hierzu wird die Finite-Elemente-Methode mit dem Programm CalculiX verwendet. Als Beispiel wird der Elektromotor des Toyota Prius II im Detail betrachtet. Hierbei werden die unterschiedlichen Lasten modelliert, dazu z{\"a}hlen neben der Zentrifugalkraft auch der Innendruck durch eine Presspassung sowie die elektromagnetischen Kr{\"a}fte. F{\"u}r die Modellierung von Kr{\"a}ften auf der Rotoroberfl{\"a}che wird eine Methodik zur Umsetzung in CalculiX entwickelt und anhand eines Beispielmodells demonstriert. Der angestrebte Festigkeitsnachweis kann im Rahmen dieser Arbeit erbracht werden. Weiterhin wird gezeigt, dass der Einfluss der elektromagnetischen Kr{\"a}fte im Arbeitspunkt mit der h{\"o}chsten Drehzahl sehr gering ausf{\"a}llt. Insgesamt bietet diese Arbeit die Grundlagen f{\"u}r mechanische Modellierungen von Rotoren unter Ber{\"u}cksichtigung aller Kr{\"a}fte. Dies kann direkt auf andere Elektromotoren angewendet werden.}, subject = {Rotor }, language = {de} } @incollection{WienekeToutaouiSchmuetzFritz2018, author = {Wieneke-Toutaoui, Burghilde and Schm{\"u}tz, J{\"o}rg and Fritz, Alfred Herbert}, title = {Urformen}, series = {Fertigungstechnik}, booktitle = {Fertigungstechnik}, edition = {12}, publisher = {Springer Vieweg}, address = {Berlin / Heidelberg}, isbn = {978-3-662-56534-6}, doi = {10.1007/978-3-662-56535-3_2}, publisher = {Technische Hochschule Brandenburg}, pages = {7 -- 132}, year = {2018}, language = {de} } @inproceedings{PinnoKarstaedtMoellmannetal.2005, author = {Pinno, Frank and Karst{\"a}dt, Detlef and M{\"o}llmann, Klaus-Peter and Vollmer, Michael}, title = {Using infrared thermography for optimization, quality control and minimization of damages of floor heating systems,}, series = {In: InfraMation 2005 : proceedings / sponsored and published by the Inframation Training Center .... Vol. 6, 313-322}, booktitle = {In: InfraMation 2005 : proceedings / sponsored and published by the Inframation Training Center .... Vol. 6, 313-322}, pages = {313 -- 322}, year = {2005}, language = {en} } @article{Vollmer2002, author = {Vollmer, Michael}, title = {Vakuumphysik im Alltag: Physikalische Freihand- und Low-cost-Experimente}, series = {In: PhyDid A - Physik und Didaktik in Schule und Hochschule 1 (2002) 1, 19-32}, journal = {In: PhyDid A - Physik und Didaktik in Schule und Hochschule 1 (2002) 1, 19-32}, pages = {19 -- 32}, year = {2002}, abstract = {Es werden eine Reihe einfacher Freihandexperimente zum Thema Unterdruck vorgestellt. Viele der Beispiele sind vom grundlegenden Aufbau her bekannt, gestatten jedoch neue Varianten, Erweiterungen bzw. die Korrektur von Fehlvorstellungen. Neben der Druckmessung in Einmachgl{\"a}sern und der Funktionsweise von Ausgussreinigern und Saughaken werden Druck- sowie Tragf{\"a}higkeitsmessungen an Staubsaugern diskutiert. Des weiteren wird untersucht, welche Saugh{\"o}he per Strohhalm realisiert werden kann. Es wird eine physikalisch einleuchtende, aber dennoch verbl{\"u}ffende Erweiterung des Versuchs mit dem umgedrehten Wasserglas pr{\"a}sentiert.}, language = {de} } @article{VollmerMoellmann2012, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Vapour pressure and adiabatic cooling from champagne: slow motion visualization of gas thermodynamics}, series = {In: Physics Education 47 (2012) 5, 608-615}, journal = {In: Physics Education 47 (2012) 5, 608-615}, pages = {608 -- 615}, year = {2012}, language = {en} } @article{MalekiMohammadi2023, author = {Maleki, Maniya and Mohammadi, Mahdieh}, title = {Velocity and pressure functions of an oscillating flow in a circular Hele-Shaw cell}, series = {Iranian Journal of Physics Research}, volume = {22}, journal = {Iranian Journal of Physics Research}, number = {1}, publisher = {Physics Society of Iran}, doi = {10.47176/ijpr.22.1.81304}, pages = {113 -- 120}, year = {2023}, abstract = {In this study, we have investigated the form of velocity and pressure functions of a fluid oscillating between two parallel glass sheets that form a circular Hele-Shaw cell. The flow has been considered to be radial, incompressible and laminar. The time-dependent Navier-Stokes equation has been solved in cylindrical coordinates using Fourier transform, and the oscillating flow velocity across the thickness of the cell has been obtained at different times. The flow velocity function in the unsteady state is related to the vertical component of the coordinates in the form of parabolic functions and also to the inverse of the radial component. The time dependence appears as a simple harmonic with a frequency equal to the oscillation frequency. The velocity of the flow is maximum at the middle of the cell along its height and gradually decreases from the middle towards the top or bottom plane and reaches zero. Pressure does not depend on the height and changes logarithmically with the radius. The dependence of pressure on time is also a simple harmonic with the external frequency, but it has a phase shift with respect to the velocity.}, language = {en} } @misc{KraskaHoenlRathmann2014, author = {Kraska, Martin and H{\"o}nl, Fabian and Rathmann, Jan}, title = {Verfahren und Anordnung zum zerst{\"o}rungsfreien Pr{\"u}fen von F{\"u}geverbindungen und Materialdefekten in Bauteilen mittels Induktions-Thermografie}, year = {2014}, language = {de} } @misc{KraskaHoenlRathmann2014, author = {Kraska, Martin and H{\"o}nl, Fabian and Rathmann, Jan}, title = {Verfahren zur zerst{\"o}rungsfreien Pr{\"u}fung einer F{\"u}geverbindung eines Bauteils mittels Induktions-Thermografie und Anordnung zur Durchf{\"u}hrung des Verfahrens}, year = {2014}, language = {de} } @inproceedings{Oertel2021, author = {Oertel, Christian}, title = {Virtual Tires: Requirements, Fields of Application and Ways of Implementation}, series = {Konferenz: 40th Annual Meeting and Conference on Tire Science \& Technology: Conference Theme: The Virtual Tire, online, 2021}, booktitle = {Konferenz: 40th Annual Meeting and Conference on Tire Science \& Technology: Conference Theme: The Virtual Tire, online, 2021}, publisher = {Tire Society}, address = {Online}, pages = {1 -- 18}, year = {2021}, language = {en} } @article{VollmerShawNugent2015, author = {Vollmer, Michael and Shaw, Joseph A. and Nugent, Paul W.}, title = {Visible and invisible mirages: comparing inferior mirages in the visible and thermal infrared}, series = {Applied Optics 54 (2015) 4, B76-B84}, journal = {Applied Optics 54 (2015) 4, B76-B84}, doi = {10.1364/AO.54.000B76}, pages = {B76 -- B84}, year = {2015}, abstract = {Abstract Visible (VIS)-light and thermal infrared (IR) inferior mirages in the 8-14 μm waveband have been observed simultaneously for the takeoff and landing of various airplanes at distances of several kilometers. Similarities as well as differences between the VIS and IR mirages are discussed. © 2014 Optical Society of America}, language = {en} } @misc{Vollmer2013, author = {Vollmer, Michael}, title = {Visible and invisible mirages: comparing inferior mirages in the visible and thermal infrared spectral range}, year = {2013}, language = {en} } @inproceedings{Goecke2014, author = {Goecke, Sven-Frithjof}, title = {Visualisation and Control of the Heat Input in MAG Welding of Ultra-High-Strength Manganese-Boron Steels}, series = {Visual-JW 2014, November 26-28th, Proceedings of the International Symposium on Visualization in Joining \& Welding Science through Advanced Measurements and Simulation, 28-30 November, Joining and Welding Research Institute - JWRI, Osaka University 2014, Osaka, Japan, (2014); JWP-15}, booktitle = {Visual-JW 2014, November 26-28th, Proceedings of the International Symposium on Visualization in Joining \& Welding Science through Advanced Measurements and Simulation, 28-30 November, Joining and Welding Research Institute - JWRI, Osaka University 2014, Osaka, Japan, (2014); JWP-15}, pages = {35 -- 36}, year = {2014}, language = {en} } @misc{Vollmer2001, author = {Vollmer, Michael}, title = {Visualization of physical phenomena involving energy transfer}, year = {2001}, language = {en} } @article{KernHessKriegletal.1998, author = {Kern, Thomas and Heß, J. and Kriegl, W. and Schweizer, A.}, title = {Visualization of the Resistance Spot Welding Process in the Production Line}, series = {Welding Research Supplement}, volume = {77}, journal = {Welding Research Supplement}, number = {12}, pages = {495 -- 502}, year = {1998}, language = {en} } @article{VollmerMoellmann2011, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Von B{\"a}llen und Schl{\"a}gern}, series = {In: Physik in unserer Zeit 42 (2011) 4, 202-203}, journal = {In: Physik in unserer Zeit 42 (2011) 4, 202-203}, doi = {10.1002/piuz.201190046}, pages = {202 -- 203}, year = {2011}, abstract = {B{\"a}lle sind eines der beliebtesten Spielzeuge von Kindern und Erwachsenen. Aus physikalischer Sicht haben alle Ballspiele eines gemeinsam: mehr oder minder stark deformierbare B{\"a}lle kollidieren mit Oberfl{\"a}chen. Die Physik vollst{\"a}ndig elastischer Kollisionen beinhaltet zwar nur recht elementare Physik. In der Praxis sind Kollisionen jedoch praktisch nie hundertprozentig elastisch, und außerdem laufen die Prozesse so schnell ab, dass Details nur mit Hochgeschwindigkeitsaufnahmen sichtbar werden.}, language = {de} } @article{Vollmer1997, author = {Vollmer, Michael}, title = {Von den Ph{\"a}nomenen zur Physik: Atmosph{\"a}rische Optik in der Schule}, series = {In: Praxis der Naturwissenschaften / Physik 46 (1997) 3, 2-9}, journal = {In: Praxis der Naturwissenschaften / Physik 46 (1997) 3, 2-9}, pages = {2 -- 9}, year = {1997}, language = {de} } @article{VollmerMoellmann2018, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Von Eisw{\"u}rfeln und gefrorenen Seen}, series = {Physik in unserer Zeit}, volume = {49}, journal = {Physik in unserer Zeit}, number = {4}, doi = {10.1002/piuz.201801518}, pages = {201 -- 202}, year = {2018}, language = {de} } @article{Vollmer2000, author = {Vollmer, Michael}, title = {Wahlverhalten von Sch{\"u}lern der Sekundarstufe II im Fach Physik seit 1990 im bundesweiten Vergleich}, series = {Physik in der Schule 38 (2000) 5, 351-354}, journal = {Physik in der Schule 38 (2000) 5, 351-354}, pages = {351 -- 354}, year = {2000}, language = {de} } @article{VollmerMoellmann2014, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Wenn es knallt und kracht}, series = {In: Physik in unserer Zeit 45 (2014) 3, 148-149}, journal = {In: Physik in unserer Zeit 45 (2014) 3, 148-149}, doi = {10.1002/piuz.201490046}, pages = {148 -- 149}, year = {2014}, abstract = {An die Knallgasprobe erinnert sich wohl noch jeder aus dem Chemieunterricht. Die Zeitskala, auf der Wasserstoff und Sauerstoff reagieren h{\"a}ngt davon ab, ob die beiden Reaktionsgase zu Beginn getrennt oder gemischt vorliegen. Dies zeigt sich deutlich in Hochgeschwindigkeits-Aufnahmen von Experimenten, bei denen Luftballons entweder mit reinem Wasserstoff oder aber mit Knallgas gef{\"u}llt werden.}, language = {de} } @article{VollmerMoellmann2020, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Wenn Licht die Biege macht}, series = {Physik in unserer Zeit}, volume = {51}, journal = {Physik in unserer Zeit}, number = {1}, publisher = {Wiley-VCH}, doi = {https://doi.org/10.1002/piuz.202001569}, pages = {46 -- 47}, year = {2020}, language = {de} } @misc{FritzKofekidouKolmykovaetal.2018, author = {Fritz, Birgit and Kofekidou, Eleni and Kolmykova, Daria and Rockt{\"a}schel, Lucia Clara and Kramann, Guido}, title = {Werkschau K{\"u}nstlerische Forschung 2018}, editor = {Rockt{\"a}schel, Lucia Clara}, publisher = {Technische Hochschule Brandenburg}, address = {Brandenburg an der Havel}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:522-opus4-19657}, pages = {22}, year = {2018}, abstract = {Participants of "Artistic Research" present their works. The course refers to Edmund Husserl's phenomenology and is dedicated to technicians. This year the results were presented in the wave field synthesis laboratory of HAW in Hamburg.}, subject = {Computerkunst}, language = {de} } @misc{Kraska2014, author = {Kraska, Martin}, title = {Werkstoff- und Strukturmechanik an der Fachhochschule Brandenburg}, year = {2014}, language = {de} } @misc{Kraska2016, author = {Kraska, Martin}, title = {Werkstofflehre im Bereich Maschinenbau - Beispiel der Technischen Hochschule Brandenburg}, year = {2016}, language = {de} } @article{MakwanaShomeGoeckeetal.2017, author = {Makwana, Pinaac and Shome, Mahadev and Goecke, Sven-Frithjof and De, Amitava}, title = {Wetting length in gas metal arc brazing of galvanised steel}, series = {Science and Technology of Welding \& Joining}, volume = {22}, journal = {Science and Technology of Welding \& Joining}, number = {2}, doi = {10.1080/13621718.2016.1207289}, pages = {1 -- 4}, year = {2017}, language = {en} } @article{NiehusTrullMoellmannetal.2002, author = {Niehus, Christina and Trull, Thomas and M{\"o}llmann, Klaus-Peter and Vollmer, Michael}, title = {Wie viel Schwermetall ist im Trinkwasser?: Optische Spektroskopie}, series = {In: Physik in unserer Zeit 33 (2002) 6, 274-282}, journal = {In: Physik in unserer Zeit 33 (2002) 6, 274-282}, doi = {10.1002/1521-3943(200211)33:6<274::AID-PIUZ274>3.0.CO;2-V}, pages = {274 -- 282}, year = {2002}, abstract = {Die moderne optische Spektroskopie kann geringste Substanzmengen nachweisen. F{\"u}r schnelle Routinemessungen reichen konventionelle Zweistrahl-Spektralphotometer. Eine wesentlich h{\"o}here Nachweisempfindlichkeit im ppm- oder sogar ppb-Bereich erm{\"o}glichen das Atomabsorptions-Spektrometer (AAS) und das Fourier-Transformations-Infrarot-Spektrometer (FTIR). Ein AAS atomisiert die Probe vollst{\"a}ndig und weist dann einzelne Elemente nach. Deshalb ist es zum Beispiel f{\"u}r die Schwermetall-Analyse geeignet. Bei der Analyse von Molek{\"u}len dominieren heute FTIR-Ger{\"a}te. Ihr Herzst{\"u}ck ist meist ein Michelson-Interferometer. Zusammen mit schnellen Fourier-Algorithmen erlaubt es, sehr schnell breite Spektren aufzunehmen. Station{\"a}re und mobile FTIR-Ger{\"a}te k{\"o}nnen vielf{\"a}ltig eingesetzt werden.}, language = {de} } @article{VollmerMoellmann2012, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Wie warm ist es auf dem Mond?}, series = {In: Sterne und Weltraum 51 (2012), 82-86, ISSN 0039-1263}, journal = {In: Sterne und Weltraum 51 (2012), 82-86, ISSN 0039-1263}, issn = {0039-1263}, pages = {82 -- 86}, year = {2012}, language = {de} } @inproceedings{KerstenBuzinHirsch2024, author = {Kersten, Philipp and Buzin, Johannes and Hirsch, S{\"o}ren}, title = {Wireless Sensor Nodes for Condition Based Maintenance in Railway Systems}, series = {IEEE Sensors Conference, Kobe, Japan, 2024}, booktitle = {IEEE Sensors Conference, Kobe, Japan, 2024}, publisher = {IEEE}, doi = {10.1109/SENSORS60989.2024.10784508}, pages = {1 -- 4}, year = {2024}, abstract = {Ensuring the reliability, safety, and efficiency of railway systems is increasingly critical in global transportation networks. This paper addresses the necessity for advanced monitoring systems by introducing a multivariate energy-efficient wireless sensor node designed for proactive maintenance in rail applications.}, language = {en} } @article{RegehlyGarmshausenReuteretal.2020, author = {Regehly, Martin and Garmshausen, Yves and Reuter, Marcus and K{\"o}nig, Niklas F. and Israel, Eric and Kelly, Damian P. and Chou, Chun-Yu and Koch, Klaas and Asfari, Baraa and Hecht, Stefan}, title = {Xolography for linear volumetric 3D printing}, series = {Nature}, volume = {588}, journal = {Nature}, publisher = {Nature Research}, doi = {10.1038/s41586-020-3029-7}, pages = {620 -- 624}, year = {2020}, language = {en} } @article{MoellmannVollmer2000, author = {M{\"o}llmann, Klaus-Peter and Vollmer, Michael}, title = {Zauberei, Diffusion, industrielle Messtechnik und 100 Jahre Quantentheorie : Einige Freihandexperimente zur Optik und W{\"a}rmestrahlung}, series = {In: Physik in der Schule 38 (2000) 4, 260-262}, journal = {In: Physik in der Schule 38 (2000) 4, 260-262}, pages = {260 -- 262}, year = {2000}, language = {de} } @article{VollmerMoellmann2011, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Zersplitterndes Holz auf rohen Eiern}, series = {In: Physik in unserer Zeit 42 (2011) 6, 305-306}, journal = {In: Physik in unserer Zeit 42 (2011) 6, 305-306}, doi = {10.1002/piuz.201190083}, pages = {305 -- 306}, year = {2011}, abstract = {Manch einer kennt die Show-Darbietungen, bei denen ein Sportler mit bloßen H{\"a}nden oder F{\"u}ßen Mauersteine oder Holzplatten zertr{\"u}mmert. Schon lange sind die physikalischen Hintergr{\"u}nde der Bruchmechanik und Dynamik bekannt, die diese scheinbar unm{\"o}glichen Kunstst{\"u}cke erlauben. Dennoch steht das Verst{\"a}ndnis der physikalischen Bewegungsgesetze h{\"a}ufig im Gegensatz zu unserer Alltagserwartung.}, language = {de} } @article{VollmerMoellmann2013, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Zerst{\"a}uben großer Wassertropfen (Rasante Physik),}, series = {In: Physik in unserer Zeit 44 (2013) 3, 149-150}, journal = {In: Physik in unserer Zeit 44 (2013) 3, 149-150}, doi = {10.1002/piuz.201390049}, pages = {149 -- 150}, year = {2013}, abstract = {In der Natur kommen Wassertropfen in verschiedenen Gr{\"o}ßen vor. Kleine Tr{\"o}pfchen von etwa 10 μm sind {\"u}blich in Nebel und Wolken, w{\"a}hrend Regentropfen bis zu 5 mm Durchmesser erreichen k{\"o}nnen. Gr{\"o}ßere Tropfen k{\"o}nnen oszillieren, w{\"a}hrend kleinere im Allgemeinen kugelf{\"o}rmig sind. Offensichtlich k{\"o}nnen Wassertropfen nicht beliebig groß werden. Welche Faktoren beschr{\"a}nken die m{\"o}gliche Gr{\"o}ße?}, language = {de} } @inproceedings{Vollmer2002, author = {Vollmer, Michael}, title = {{\"U}ber die Farben der Sonne und des Himmels: Rayleigh- und Miestreuung in Demonstrationsexperimenten}, series = {In: CD zur Fr{\"u}hjahrstagung des Fachverbandes Didaktik der Physik in der Deutschen Physikalischen Gesellschaft : Leipzig, 2002 / Red.: V. Nordmeier. - Berlin : Lehmann, [2002]. - 1 CD-ROM. - ISBN 3-936427-11-9}, booktitle = {In: CD zur Fr{\"u}hjahrstagung des Fachverbandes Didaktik der Physik in der Deutschen Physikalischen Gesellschaft : Leipzig, 2002 / Red.: V. Nordmeier. - Berlin : Lehmann, [2002]. - 1 CD-ROM. - ISBN 3-936427-11-9}, year = {2002}, language = {de} } @misc{Loewe2011, author = {L{\"o}we, Katharina}, title = {{\"U}berblick zur solaren Stromerzeugung durch Photovoltaik und zuk{\"u}nftige Herausforderungen im Themenfeld Ressourceneffizienz und Recycling}, year = {2011}, language = {de} } @article{MikhailovLamkinDegterevetal.2023, author = {Mikhailov, Ivan Igorevich and Lamkin, I. A. and Degterev, Aleksandr and Degtereva, Mariya and Pavlova, Marina and Kurachkina, Marharyta and Tarasov, S. A. and Kuzmina, Ulyana}, title = {Фоточувствительные структуры с каскадными концентраторами излучения на основе коллоидных квантовых точек халькогенидов металлов}, series = {Journal of the Russian Universities Radioelectronics}, volume = {26}, journal = {Journal of the Russian Universities Radioelectronics}, number = {2}, publisher = {Saint Petersburg Electrotechnical University}, issn = {2658-4794}, doi = {10.32603/1993-8985-2023-26-2-78-88}, pages = {78 -- 88}, year = {2023}, abstract = {The problem of increasing the efficiency of existing photodetectors and creating their new types attracts much research attention. Among new photodetector types are photosensitive structures based on cascade concentrators, whose operational principle involves the absorption of optical radiation followed by its reemission at a longer wavelength and radiation concentration onto a highly efficient small-area photodetector. The absorption and re-emission spectra of each cascade layer depend on the characteristics of the material used. Сolloidal quantum dots are among the most promising materials for cascade layers due to their manufacturing technology, which provides for accurate control over the photoluminescence maximum position. It seems highly relevant to develop and to study photosensitive structures with cascade concentrators of various shapes based on CdS, CdSe/ZnS, and PbS colloidal quantum dots. Aim . To develop photosensitive structures with a wide-range sensitivity spectrum based on concentrators containing arrays of metal chalcogenide CQDs and to study their characteristics. Materials and methods . Cascade photosensitive structures were manufactured based on layers made of polymethyl methacrylate and layers of colloidal quantum dots embedded in a polystyrene matrix. Results . Three-layer concentrators were manufactured with different colloidal quantum dots in each concentrator layers. A 22 \% increase in the output power was observed for a three-layer cascade structure based on different cascade layer materials compared to a similar structure using a single layer concentrator. Conclusion . The conducted studies showed an increase in the efficiency of photosensitive structures with a cascade concentrator based on colloidal quantum dots of various types (CdS, CdSe/ZnS, and PbS) in the cascade layers.}, language = {ru} } @article{Vollmer1995, author = {Vollmer, Michael}, title = {"Wenn das Licht in Farben sich erbricht ...", Teil 1}, series = {In: : Physik in unserer Zeit 26 (1995) 3, 106 - 115}, journal = {In: : Physik in unserer Zeit 26 (1995) 3, 106 - 115}, doi = {10.1002/piuz.19950260303}, pages = {106 -- 115}, year = {1995}, abstract = {Fata Morgana, Regenb{\"o}gen, Sonnenhunde, Brockengespenst, gr{\"u}ne Sonnenstrahlen, D{\"a}mmerungsfarben bei klarer und tr{\"u}ber Atmosph{\"a}re. Diese optischen Erscheinungen der Atmosph{\"a}re bieten nicht nur faszinierende Anblicke, sondern beinhalten vor allem interessante Physik.}, language = {de} } @article{Vollmer1995, author = {Vollmer, Michael}, title = {"Wenn das Licht in Farben sich erbricht ...", Teil 2}, series = {In: Physik in unserer Zeit 26 (1995) 4, 176 - 184}, journal = {In: Physik in unserer Zeit 26 (1995) 4, 176 - 184}, doi = {10.1002/piuz.19950260406}, pages = {176 -- 184}, year = {1995}, language = {de} }