Zobrazeno 1 - 10
of 583
pro vyhledávání: '"Knoester J"'
Publikováno v:
Phys. Rev. B 97, 085428 (2018)
We theoretically investigate the time-dependent transport of a localized surface plasmon excitation through a linear array of identical and equidistantly spaced metal nanoparticles. Two different signals propagating through the array are found: one t
Externí odkaz:
http://arxiv.org/abs/1802.02853
We present a detailed study of the effects of L\'evy $\alpha$-stable disorder distributions on the optical and localization properties of excitonic systems. These distributions are a generalization of commonly studied Gaussian randomness ($\alpha = 2
Externí odkaz:
http://arxiv.org/abs/1404.4475
In previous work, we have predicted novel effects, such as exchange broadening, anomalous scaling of the localization length and a blue shift of the absorption spectrum with increasing disorder strength, for static disorder models described by stable
Externí odkaz:
http://arxiv.org/abs/1211.5357
Publikováno v:
J. Chem. Phys. 139, 014303 (2013)
We conduct a theoretical study of the bistable optical response of a nanoparticle heterodimer comprised of a closely spaced semiconductor quantum dot and metal nanoparticle. The bistable nature of the response results from the interplay between the q
Externí odkaz:
http://arxiv.org/abs/1209.3255
We show that interference can be the principle of operation of an all-optical switch and other nanoscale plasmonic interference devices (PIDs). The optical response of two types of planar plasmonic waveguides is studied theoretically: bent chains and
Externí odkaz:
http://arxiv.org/abs/1107.5247
Autor:
Augulis, R., Malyshev, A. V., Malyshev, V. A., Pugzlys, A., van Loosdrecht, P. H. M., Knoester, J.
Publikováno v:
J. Phys. Chem. Lett. 1, 2911 (2010)
The local distribution of exciton levels in disordered cyanine-dye-based molecular nano-aggregates has been elucidated using fluorescence line narrowing spectroscopy. The observation of a Wigner-Dyson-type level spacing distribution provides direct e
Externí odkaz:
http://arxiv.org/abs/1012.2805
Publikováno v:
Phys. Rev. Lett. 105, 137402 (2010)
We predict the existence of exchange broadening of optical lineshapes in disordered molecular aggregates and a nonuniversal disorder scaling of the localization characteristics of the collective electronic excitations (excitons). These phenomena occu
Externí odkaz:
http://arxiv.org/abs/1009.1102
Publikováno v:
Phys. Rev. B 79, 205121 (2009)
We compare localization properties of one-dimensional Frenkel excitons with Gaussian and Lorentzian uncorrelated diagonal disorder. We focus on the states of the Lifshits tail, which dominate the optical response and low-temperature energy transport
Externí odkaz:
http://arxiv.org/abs/0905.0984
Publikováno v:
J. Chem. Phys. 127, 154719 (2007)
We theoretically study the efficiency of energy harvesting in linear exciton chains with an energy bias, where the initial excitation is taking place at the high-energy end of the chain and the energy is harvested (trapped) at the other end. The effi
Externí odkaz:
http://arxiv.org/abs/0710.2478
Publikováno v:
J. Lumin. 128, 956 (2008)
The study of energy harvesting in chain-like structures is important due to its relevance to a variety of interesting physical systems. Harvesting is understood as the combination of exciton transport through intra-band exciton relaxation (via scatte
Externí odkaz:
http://arxiv.org/abs/0710.2511