Zobrazeno 1 - 10
of 106
pro vyhledávání: '"Křápek, Vlastimil"'
Autor:
Kepič, Peter, Horák, Michal, Kabát, Jiří, Křápek, Vlastimil, Konečná, Andrea, Šikola, Tomáš, Ligmajer, Filip
Vanadium dioxide (VO$_2$) has received significant interest in the context of nanophotonic metamaterials and memories owing to its reversible insulator-metal transition associated with significant changes in its optical and electronic properties. Whi
Externí odkaz:
http://arxiv.org/abs/2408.13354
Autor:
Horák, Michal, Kepič, Peter, Kabát, Jiří, Hájek, Martin, Ligmajer, Filip, Konečná, Andrea, Šikola, Tomáš, Křápek, Vlastimil
We present annular dark field scanning transmission electron microscopy (ADF-STEM) as an efficient, fast, and non-destructive nanoscale tool for monitoring solid-state phase transition. Using metal-insulator transition in vanadium dioxide nanoparticl
Externí odkaz:
http://arxiv.org/abs/2408.11972
The plasmonic lightning-rod effect refers to the formation of a strong electric near field of localized surface plasmons at the sharp features of plasmonic antennas. While this effect is intuitively utilized in the design and optimization of plasmoni
Externí odkaz:
http://arxiv.org/abs/2407.09454
Autor:
Krpenský, Jan, Horák, Michal, Kabát, Jiří, Planer, Jakub, Kepič, Peter, Křápek, Vlastimil, Konečná, Andrea
Vanadium dioxide (VO$_2$) is a strongly-correlated material that exhibits insulator-to-metal transition (IMT) near room temperature, which makes it a promising candidate for applications in nanophotonics or optoelectronics. However, creating VO$_2$ n
Externí odkaz:
http://arxiv.org/abs/2309.11980
Developing methods to sense local variations in nearby materials, such as their refractive index and thickness, is important in different fields including chemistry and biomedical applications, among others. Localized surface plasmons (LSPs) excited
Externí odkaz:
http://arxiv.org/abs/2305.09290
Autor:
Liška, Petr, Musálek, Tomáš, Šamořil, Tomáš, Kratochvíl, Matouš, Matula, Radovan, Horák, Michal, Nedvěd, Matěj, Urban, Jakub, Planer, Jakub, Rovenská, Katarína, Dvořák, Petr, Kolíbal, Miroslav, Křápek, Vlastimil, Kalousek, Radek, Šikola, Tomáš
We report on the optical properties of CsPbBr3 polycrystalline thin film on a single grain level. A sample comprised of isolated nanocrystals (NCs) mimicking the properties of the polycrystalline thin film grains that can be individually probed by ph
Externí odkaz:
http://arxiv.org/abs/2304.05114
Publikováno v:
Nanophotonics 12, 3089-3098 (2023)
Electron energy loss spectroscopy (EELS) is often utilized to characterize localized surface plasmon modes supported by plasmonic antennas. However, the spectral resolution of this technique is only mediocre, and it can be rather difficult to resolve
Externí odkaz:
http://arxiv.org/abs/2302.03838
Gallium is a plasmonic material offering ultraviolet to near-infrared tunability, facile and scalable preparation, and good stability of nanoparticles. In our contribution, we experimentally demonstrate the link between the shape and size of individu
Externí odkaz:
http://arxiv.org/abs/2212.13928
Autor:
Cao, Xin, Yang, Jingzhong, Li, Pengji, Fandrich, Tom, Rugeramigabo, Eddy P., Křápek, Vlastimil, Ma, Chenxi, Benthin, Frederik, Keil, Robert, Brechtken, Benedikt, Haug, Rolf J., Oestreich, Michael, Zhang, Yiteng, Schmidt, Constantin, An, Zhao, Zopf, Michael, Ding, Fei
The surface of semiconductor nanostructures has a major impact on their electronic and optical properties. Disorder and defects in the surface layer typically cause degradation of charge carrier transport and radiative recombination dynamics. However
Externí odkaz:
http://arxiv.org/abs/2207.13387
Autor:
Liška, Jiří, Krajňák, Tomáš, Kepič, Peter, Konečný, Martin, Hrtoň, Martin, Křápek, Vlastimil, Nováček, Zdeněk, Tesi, Lorenzo, van Slageren, Joris, Čechal, Jan, Šikola, Tomáš
Phthalocyanines as organic semiconductors and molecular magnets provide plenty of industrial or high-tech applications from dyes and pigments up to gas sensors, molecular electronics, spintronics and quantum computing. Copper phthalocyanine (CuPc) be
Externí odkaz:
http://arxiv.org/abs/2201.08235