@article{KloppTrittelHarthetal.2023, author = {Klopp, Christoph and Trittel, Torsten and Harth, Kirsten and Stannarius, Ralf}, title = {Coalescence of biphasic droplets embedded in free standing smectic A films}, series = {Soft Matter}, volume = {20}, journal = {Soft Matter}, number = {5}, publisher = {Royal Society of Chemistry}, issn = {1744-683X}, doi = {10.1039/d3sm01549a}, pages = {1036 -- 1046}, year = {2023}, abstract = {We investigate micrometer-sized flat droplets consisting of an isotropic core surrounded by a nematic rim in freely suspended smectic A liquid-crystal films. In contrast to purely isotropic droplets which are characterized by a sharp edge and no long-range interactions, the nematic fringe introduces a continuous film thickness change resulting in long-range mutual attraction of droplets. The coalescence scenario is divided in two phases. The first one consists in the fusion of the nematic regions. The second phase involves the dissolution of a thin nematic film between the two isotropic cores. The latter has many similarities with the rupture of thin liquid films between droplets coalescing in an immiscible viscous liquid. Coalescence of biphasic droplets in free-standing smectic films is controlled in part by the rupture of a thin nematic membrane separating the isotropic droplet cores.}, language = {en} } @article{KuznetsovFroripSuenteretal.2023, author = {Kuznetsov, Arthur and Frorip, Aleksandr and S{\"u}nter, Alar and Kasvand, Nensi and Korsakov, Vadim and Konoplev, Georgii and Stepanova, Oksana and Rusalepp, Linda and Anton, Dea and P{\"u}ssa, T{\~o}nu and Roasto, Mati and Abramova, Liubov and Kozin, Andrey and Toom, Lauri and Hirsch, S{\"o}ren and Mukhin, Nikolay}, title = {Fast Protein and Metabolites (Nucleotides and Nucleosides) Liquid Chromatography Technique and Chemical Sensor for the Assessment of Fish and Meat Freshness}, series = {Chemosensors}, journal = {Chemosensors}, number = {1/2023 / Band 11}, editor = {mdpi,}, publisher = {MDPI}, issn = {2227-9040}, doi = {10.3390/chemosensors11010069}, pages = {69}, year = {2023}, abstract = {Fast protein and metabolite liquid chromatography (FPLMC) was introduced years ago to enable the easy separation of high-molecular compounds such as proteins from small molecules and the identification of the low-molecular substances. In this paper, the method is applied for the rapid evaluation of freshness and monitoring the aging of animal meat and fish. A novel chromatographic sensor was developed with a deep UV LED-based photometric detection unit (255-265 nm), an original flow cuvette and registration scheme; the processing of a chromatogram with the sensor takes approximately 15 min. Strict isochronism between the elution of ATP metabolites, mainly hypoxanthine (Hx) and inosine monophosphate (IMP), and the time of maturation of meat or fish, was discovered. A new freshness index H* = [Hx]/[IMP] was introduced, which is proportional to the instrumental delay time in the FPMLC chromatograms: the H* index < 0.5 indicates the presence of inosine monophosphate (IMP) and the high quality of the meat or fish. Reasonably strong correlations were revealed between data obtained by FPMLC and total volatile basic nitrogen TVB-N (for fish) or volatile fatty acids VFA (for meat) content. Moreover, putative nucleotide salvage and an increase in the concentration of IMP were observed in fish after heat treatment using the FPMLC sensor and NMR technique.}, language = {en} } @article{ChaurasiaGoeckeDe2022, author = {Chaurasia, Prashtan Kumar and Goecke, Sven-Frithjof and De, Amitava}, title = {Real-time monitoring of temperature field, metal transfer and cooling rate during gas metal arc-directed energy deposition}, series = {Science and Technology of Welding and Joining}, journal = {Science and Technology of Welding and Joining}, number = {27}, publisher = {Taylor \& Francis}, issn = {13621718}, doi = {10.1080/13621718.2022.2080447}, pages = {512 -- 521}, year = {2022}, language = {en} } @article{TumarkinTyurninaMukhinetal.2022, author = {Tumarkin, Andrey and Tyurnina, Natalya and Mukhin, Nikolay and Tyurnina, Zoya and Sinelshchikova, Olga and Gagarin, Alexander and Sapego, Eugeny and Kretser, Yriy}, title = {Glass-ceramic ferroelectric composite material BaTiO3/KFeSi for microwave applications}, series = {Composite Structures}, volume = {281}, journal = {Composite Structures}, publisher = {Elsevier}, issn = {0263-8223}, pages = {1 -- 10}, year = {2022}, abstract = {Glass-ceramic composites consisting of potassium-iron-silicate glass and barium titanate mixed in various proportions were successfully synthesized by low-temperature sintering. The crystal structure of the obtained composite samples, the porosity and the microhardness were studied by the X-ray diffraction, the electron microscopy, the weight method, and the Vickers method. Electrical characteristics (dielectric permittivity, tunability and losses) of as-prepared and annealed in oxygen medium samples were investigated at microwaves. According to structural analysis, the synthesized samples are a mixture of KFeSi glass, ferroelectric BaTiO3, and dielectric barium polytitanates; the ratio of the latter determines the electrical properties of the composites. Depending on the content of barium titanate, the studied composite samples show a permittivity from 50 to 270 with a dielectric loss level of 0,1-0,02 in frequency range from 3 to 10 GHz. Annealing of composite samples in an oxygen-containing environment leads to an increase in their dielectric permittivity and tunability by 10-25\% and a twofold decrease in dielectric loss.}, language = {en} } @article{FachetWitteFlassigetal.2020, author = {Fachet, Melanie and Witte, Carina and Flassig, Robert J. and Rihko-Struckmann, Liisa K. and McKie-Krisberg, Zaid and Polle, J{\"u}rgen E. W. and Sundmacher, Kai}, title = {Reconstruction and analysis of a carbon-core metabolic network for Dunaliella salina}, series = {BMC Bioinformatics}, volume = {21}, journal = {BMC Bioinformatics}, number = {1}, publisher = {BioMed Central}, doi = {10.1186/s12859-019-3325-0}, year = {2020}, language = {en} } @article{GieslerPeschWeirauchetal.2020, author = {Giesler, Jasper and Pesch, Georg R. and Weirauch, Laura and Schmidt, Marc-Peter and Th{\"o}ming, Jorg and Baune, Michae}, title = {Polarizability-Dependent Sorting of Microparticles Using Continuous-Flow Dielectrophoretic Chromatography with a Frequency Modulation Method}, series = {Micromachines}, volume = {11}, journal = {Micromachines}, number = {1}, publisher = {MDPI}, doi = {10.3390/mi11010038}, pages = {38}, year = {2020}, language = {en} } @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} } @article{MoellmannRegehlyVollmer2020, author = {M{\"o}llmann, Klaus-Peter and Regehly, Martin and Vollmer, Michael}, title = {Spectroscopy and microscopy analysis of semiconductor lasers in student laboratories}, series = {European Journal of Physics}, volume = {41}, journal = {European Journal of Physics}, number = {2}, publisher = {Institute of Physics Publishing (IOP); European Physical Society}, doi = {10.1088/1361-6404/ab5075}, pages = {025302}, year = {2020}, language = {en} } @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} } @article{LuebckeBraenzelDehlingeretal.2019, author = {L{\"u}bcke, Andrea and Braenzel, Julia and Dehlinger, Aurelie and Schn{\"u}rer, Matthias and Stiel, Holger and Guttmann, Peter and Rehbein, Stefan and Schneider, Gerd and Werner, Stephan and Kemmler, Roman and Ritter, Sebastian and Raugust, Marc and Wende, Torsten and Behrendt, Marcel and Regehly, Martin}, title = {Soft X-ray nanoscale imaging using a sub-pixel resolution charge coupled device (CCD) camera}, series = {Review of Scientific Instruments}, volume = {90}, journal = {Review of Scientific Instruments}, number = {4}, publisher = {American Institute of Physics}, doi = {10.1063/1.5053593}, year = {2019}, 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 Vch}, issn = {2366-7478}, doi = {/10.1002/adbi.201800320}, pages = {1800320}, year = {2019}, language = {en} } @article{GoeckeMakwanaShomeetal.2019, author = {Goecke, Sven-Frithjof and Makwana, Pinaac and Shome, Mahadev and De, Amitava}, title = {Probing joint strength and distortion in gas metal arc lap joining of aluminum and steel sheets}, series = {Welding in the World}, volume = {63}, journal = {Welding in the World}, number = {2}, publisher = {Springer}, doi = {10.1007/s40194-018-0653-z}, pages = {229 -- 236}, year = {2019}, language = {en} } @article{VollmerShawNugentetal.2019, author = {Vollmer, Michael and Shaw, Joseph A. and Nugent, Paul and Harris, Wilson}, title = {Heiße Quellen im W{\"a}rmebild. Yellowstone-Park im Infraroten}, series = {Physik in unserer Zeit}, volume = {50}, journal = {Physik in unserer Zeit}, number = {5}, publisher = {Wiley-VCH}, doi = {10.1002/piuz.201901539}, pages = {244 -- 250}, year = {2019}, language = {de} } @article{MakwanaGoeckeDe2019, author = {Makwana, Pinaac and Goecke, Sven-Frithjof and De, Amitava}, title = {Real-time heat input monitoring towards robust GMA brazing}, series = {Science and Technology of Welding \& Joining}, volume = {24}, journal = {Science and Technology of Welding \& Joining}, number = {1}, publisher = {Taylor \& Francis}, doi = {10.1080/13621718.2018.1470290}, pages = {1 -- 11}, year = {2019}, language = {en} } @article{VollmerMoellmann2019, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Manche m{\"o}gen's kochend heiß}, series = {Physik in unserer Zeit}, volume = {50}, journal = {Physik in unserer Zeit}, number = {1}, publisher = {Wiley-VCH}, doi = {10.1002/piuz.201901533}, pages = {46 -- 47}, year = {2019}, language = {de} } @article{VollmerMoellmann2019, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Alles kalter Kaffee? Rasante Physik}, series = {Physik in unserer Zeit}, volume = {50}, journal = {Physik in unserer Zeit}, number = {5}, publisher = {Wiley-VCH}, doi = {10.1002/piuz.201901553}, pages = {252 -- 253}, year = {2019}, language = {de} } @article{VollmerMoellmann2019, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Das langsame Verdunsten von Wasser}, series = {Physik in unserer Zeit}, volume = {50}, journal = {Physik in unserer Zeit}, number = {2}, publisher = {Wiley-VCH}, doi = {10.1002/piuz.201901541}, pages = {97 -- 98}, year = {2019}, 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{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{RegehlyHecht2022, author = {Regehly, Martin and Hecht, Stefan}, title = {Auf dem Weg zum Replikator}, series = {Physik in unserer Zeit}, volume = {53}, journal = {Physik in unserer Zeit}, number = {3}, publisher = {Wiley-VCH GmbH}, issn = {1521-3943}, doi = {10.1002/piuz.202201637}, pages = {125 -- 131}, year = {2022}, language = {de} }