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In this paper, wireless power transfer by means of electromagnetic radiation is investigated. Formulas are derived for the efficiency of the power transfer in free space, in the presence of reflecting surfaces, and within enclosed spaces.…

经典物理 · 物理学 2016-11-23 Robert A. Moffatt

A 1-dimensional model for coherent quantum energy transfer through a complex of compressible boxes is investigated by numerical integration of the time-dependent Schr\"odinger equation. Energy is communicated from one box to the next by the…

化学物理 · 物理学 2015-05-12 Mark A. Peterson

The explicit expression for the two-time free energy distribution function in one-dimensional directed polymers in random potential is derived in terms of the Bethe ansatz replica technique by mapping the replicated problem to the…

统计力学 · 物理学 2013-08-12 Victor Dotsenko

We investigate theoretically the energy transfer phenomenon in a double-layer graphene (DLG) system in which two layers are coupled due to the Coulomb interlayer interaction without appreciable interlayer tunneling. We use the balance…

介观与纳米尺度物理 · 物理学 2015-06-03 B. Bahrami , T. Vazifehshenas

Energy-harvesting and wireless power transfer in cooperative relaying networks have recently attracted a considerable amount of research attention. Most of the existing work on this topic however focuses on Rayleigh fading channels which…

信号处理 · 电气工程与系统科学 2018-06-26 Khaled M. Rabie , Bamidele Adebisi , Mohamed-Slim Alouini

Forster-type nonradiative energy transfer (NRET) is widely used, especially utilizing nanostructures in different combinations and configurations. However, the existing well-accepted Forster theory is only for the case of a single particle…

介观与纳米尺度物理 · 物理学 2013-06-06 P. L. Hernandez-Martinez , A. O. Govorov , H. V. Demir

A formal derivation is presented of the energy transfer rate between radiation and matter due to the scattering of an isotropic distribution of resonant photons. The derivation is developed in the context of the two-level atom in the…

天体物理学 · 物理学 2010-04-29 Avery Meiksin

Fluorescence resonance energy transfer (FRET) between two dyes acriflavine (Acf) and rhodamine B (RhB) were investigated in solution and Layer-by-Layer (LbL) self assembled films in presence and absence of clay mineral laponite. UV-Vis…

材料科学 · 物理学 2014-09-16 Dibyendu Dey , D. Bhattacharjee , S. Chakraborty , Syed Arshad Hussain

The paper studies the overdamped motion of Brownian particles in a tilted sawtooth potential. The dependencies of the diffusion coefficient and coherence level of Brownian transport on temperature, tilting force, and the shape of the…

软凝聚态物质 · 物理学 2009-11-10 E. Heinsalu , R. Tammelo , T. Ord

Charge transfer plays a crucial role in many processes of interest in physics, chemistry, and bio-chemistry. In many applications the size of the systems involved calls for time-dependent density functional theory (TDDFT) to be used in…

化学物理 · 物理学 2017-10-11 Neepa T. Maitra

We report the enhanced optical transmission in the coherent, off-resonant excitation of Rydberg atom gases at room temperature via a two-photon process. Here thermal resonance-enhanced transparency (TRET) is induced when the detuning of the…

We develop a mathematically rigorous theory for the quantum transfer processes in degenerate donor-acceptor dimers in contact with a thermal environment. We calculate explicitly the transfer rates and the acceptor population efficiency. The…

量子物理 · 物理学 2020-07-15 Marco Merkli , Gennady P. Berman , Avadh Saxena

Here we summarize the results from our direct numerical simulations (DNS) and experimental measurements on rotating Rayleigh-B\'enard (RB) convection. Our experiments and simulations are performed in cylindrical samples with an aspect ratio…

流体动力学 · 物理学 2013-06-21 Richard J. A. M. Stevens , Herman Clercx , Detlef Lohse

Using methods of condensed matter and statistical physics, we examine the transport of excitons through the Fenna-Matthews-Olson (FMO) complex from a receiving antenna to a reaction center. Writing the equations of motion for the exciton…

生物物理 · 物理学 2016-02-23 Lev Mourokh , Franco Nori

This paper considers the joint design of user power allocation and relay beamforming in relaying communications, in which multiple pairs of single-antenna users exchange information with each other via multiple-antenna relays in two time…

信息论 · 计算机科学 2017-01-27 Zhichao Sheng , Hoang D. Tuan , Trung Q. Duong , H. Vincent Poor

By making use of the Green function concept of quantization of the electromagnetic field in Kramers--Kronig consistent media, a rigorous quantum mechanical derivation of the rate of intermolecular energy transfer in the presence of…

量子物理 · 物理学 2016-08-16 Ho Trung Dung , Ludwig Knöll , Dirk-Gunnar Welsch

In recent years single molecule force spectroscopy has opened a new avenue to provide profiles of the complex energy landscape of biomolecules. In this field, quantitative analyses of the data employing sound theoretical models, have played…

生物大分子 · 定量生物学 2015-01-15 Changbong Hyeon , Michael Hinczewski , D. Thirumalai

Evidence suggests that the transport rate of a passive particle at long timescales is enhanced due to interactions with the surrounding active ones in a size- and composition-dependent manner. Using a system of particles with different…

软凝聚态物质 · 物理学 2021-07-14 Efe Ilker , Michele Castellana , Jean-François Joanny

Heat transfer is studied in the system of electron double layers of correlated composite fermion quantum liquids. In the near-field regime, the primary mechanism governing interlayer energy transfer is mediated by the Coulomb interaction of…

介观与纳米尺度物理 · 物理学 2024-04-16 Dmitry Zverevich , Alex Levchenko

Ultrafast laser irradiation of solids leads to a thermodynamic nonequilibrium within and between the electron and phonon subsystems of the material. Due to electron-electron and phonon-phonon collisions, both subsystems relax into…

材料科学 · 物理学 2018-10-24 Isabel Klett , Baerbel Rethfeld