@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{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} } @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{OchkovKraskaLukatsky2024, author = {Ochkov, V. F. and Kraska, Martin and Lukatsky, A. M.}, title = {Математический Анализ Трамвайных Путей}, series = {Физика в школе}, journal = {Физика в школе}, doi = {10.47639/0130-5522_2024_1_32}, pages = {32 -- 45}, year = {2024}, abstract = {В статье рассказано, как необходимо проектировать повороты железной дороги, чтобы не было сильных боковых толчков. используются методы математического анализа для решения задачи. пред- ложена новая переходная кривая}, language = {ru} } @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} }