Zobrazeno 1 - 10
of 554
pro vyhledávání: '"Meixner, A. J."'
We present an innovative optical imaging system for measuring parameters of a small particle such as a macromolecule or nanoparticle at the quantum limit of sensitivity. In comparison to the conventional confocal interferometric scattering (iSCAT) ap
Externí odkaz:
http://arxiv.org/abs/2410.19417
Autor:
Wang, Rui, Liu, Quan, Dai, Sheng, Liu, Chao-Ming, Liu, Yue, Sun, Zhao-Yuan, Li, Hui, Zhang, Chang-Jin, Wang, Han, Xu, Cheng-Yan, Shao, Wen-Zhu, Meixner, Alfred J., Zhang, Dai, Li, Yang, Zhen, Liang
Defect engineering is promising to tailor the physical properties of two-dimensional (2D) semiconductors for function-oriented electronics and optoelectronics. Compared with the extensively studied 2D binary materials, the origin of defects and their
Externí odkaz:
http://arxiv.org/abs/2304.14004
Autor:
Schedel, Christine, Strauß, Fabian, Kohlschreiber, Pia, Geladari, Olympia, Meixner, Alfred J., Scheele, Marcus
We investigate the time-resolved photoelectric response of WSe$_2$ crystals on common glass and flexible polyimide substrates to determine the effect of the dielectric environment on the speed of the photodetectors. We show that varying the substrate
Externí odkaz:
http://arxiv.org/abs/2203.14053
Publikováno v:
Nanophotonics, Vol 13, Iss 7, Pp 1039-1047 (2024)
An analytic model is used to calculate the Raman and fluorescence enhancement of a molecule in between two closely spaced gold nanospheres. Instead of using the conventional approach that only the dipolar plasmonic mode is considered, we calculate th
Externí odkaz:
https://doaj.org/article/2c934f7d066b466d85e50f7685d3777b
Autor:
Lapkin, Dmitry, Kirsch, Christopher, Hiller, Jonas, Andrienko, Denis, Assalauova, Dameli, Braun, Kai, Carnis, Jerome, Kim, Young Yong, Mandal, Mukunda, Maier, Andre, Meixner, Alfred J., Mukharamova, Nastasia, Scheele, Marcus, Schreiber, Frank, Sprung, Michael, Wahl, Jan, Westendorf, Sophia, Zaluzhnyy, Ivan A., Vartanyants, Ivan A.
We correlate spatially resolved fluorescence (-lifetime) measurements with X-ray nanodiffraction to reveal surface defects in supercrystals of self-assembled caesium lead halide perovskite nanocrystals and study their effect on the fluorescence prope
Externí odkaz:
http://arxiv.org/abs/2109.05502
Autor:
Liu, Quan, Wackenhut, Frank, Wang, Liangxuan, Hauler, Otto, Roldao, Juan Carlos, Adam, Pierre-Michel, Brecht, Marc, Gierschner, Johannes, Meixner, Alfred J.
Tautomerization is a fast chemical reaction where structures of the reactants differ only in the position of a proton and a double bond. Tautomerization often occurs in natural substances and is a fundamental process in organic- and biochemistry. How
Externí odkaz:
http://arxiv.org/abs/2011.01645
Autor:
Kumar, Krishan, Hiller, Jonas, Bender, Markus, Nosrati, Saeed, Liu, Quan, Wackenhut, Frank, Meixner, Alfred J., Braun, Kai, Bunz, Uwe H. F., Scheele, Marcus
CdSe nanocrystals and aggregates of an aryleneethynylene derivative are assembled into a hybrid thin film with dual fluorescence from both fluorophores. Under continuous excitation, the nanocrystals and the molecules exhibit anti-correlated fluoresce
Externí odkaz:
http://arxiv.org/abs/2006.04108
Autor:
Fetzer, Florian, Maier, Andre, Hodas, Martin, Geladari, Olympia, Braun, Kai, Meixner, Alfred J., Schreiber, Frank, Schnepf, Andreas, Scheele, Marcus
We report an easy and broadly applicable method for the controlled self-assembly of atomically precise Au32(nBu3P)12Cl8 nanoclusters into micro-crystals. This enables the determination of emergent optoelectronic properties resulting from long-range o
Externí odkaz:
http://arxiv.org/abs/2002.06454
Autor:
Takele, Wassie Mersha, Wackenhut, Frank, Piatkowski, Lukasz, Meixner, Alfred J., Waluk, Jacek
The strong coupling of an IR-active molecular transition with an optical mode of the cavity results in vibrational polaritons, which opens a new way to control chemical reactivity via confined electromagnetic fields of the cavity. In this study, we d
Externí odkaz:
http://arxiv.org/abs/2001.10812
Autor:
Liu, Quan, Wackenhut, Frank, Hauler, Otto, Scholz, Miriam, Adam, Pierre-Michel, Brecht, Marc, Meixner, Alfred J.
Hypericin can be found in nature in Hypericum perforatum (St. John's Wort) and has become subject of intense biochemical research. Studies report of antidepressive, antineoplastic, antitumor and antiviral activity of hypericin. Among the variety of p
Externí odkaz:
http://arxiv.org/abs/1910.03921