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The light-harvesting excitonic properties of poly(phenylene ethynylene) (PPE) extended dendrimers (tree-like {\pi}-conjugated macromolecules) involve a directional cascade of local excitation-energy transfer (EET) processes occurring from…

Chemical Physics · Physics 2024-03-13 Joachim Galiana , Benjamin Lasorne

Targeted energy transfer (TET) from a Van der Pol oscillator coupled to a nonlinear energy sink (NES) is investigated under the action of a high-frequency external drive, which tunes the effective natural stiffness and promotes resonance…

Chaotic Dynamics · Physics 2026-04-14 Somnath Roy , Mattia Coccolo , Sayan Gupta , Miguel A. F. Sanjuán

We consider an isothermal machine composed of two Brownian particles (say particle A and B) connected by a harmonic spring. A constant load is attached to particle A, and the particle B is trapped in a harmonic confinement whose minimum is…

Statistical Mechanics · Physics 2018-08-01 Deepak Gupta

Efficient energy transfer often occurs between oscillation modes in a resonator when they are tuned to internal resonance. We design the eigenfrequencies of two vibrational modes of an electromechanical resonator to be close to a ratio of…

Mesoscale and Nanoscale Physics · Physics 2022-09-21 Yingming Yan , X. Dong , L. Huang , K. Moskovtsev , H. B. Chan

A new statistical model for the combined effects of decoherence, energy redistribution and dissipation on electron transport in large quantum systems is introduced. The essential idea is to consider the electron phase information to be lost…

Mesoscale and Nanoscale Physics · Physics 2018-04-26 Thomas Stegmann , Orsolya Ujsághy , Dietrich E. Wolf

We study the coherence of transport of an overdamped Brownian particle in frictional ratchet system in the presence of external Gaussian white noise fluctuations. The analytical expressions for the particle velocity and diffusion…

Statistical Mechanics · Physics 2009-11-11 Raishma Krishnan , Debasis Dan , A. M. Jayannavar

Recently energy exchange between two filaments crossing at small angle and with power slightly above the critical for self-focusing $P_{cr}$ was experimentally demonstrated. In this paper we present a model describing the process of this…

Optics · Physics 2015-06-19 Daniela A. Georgieva , Lubomir M. Kovachev

Next-generation communication networks will likely involve the energy-efficient transfer of information and energy over the same wireless channel, for which the physical layer will become more vulnerable to cyber attacks by potential…

Information Theory · Computer Science 2017-07-12 Ali A. Nasir , Hoang D. Tuan , Trung Q. Duong , H. Vincent Poor

We develop a theory of energy relaxation in semiconductors and insulators highly excited by the long-acting external irradiation. We derive the equation for the non-equilibrium distribution function of excited electrons. The solution for…

Materials Science · Physics 2016-09-21 V. P. Zhukov , V. G. Tyuterev , P. M. Echenique , E. V. Chulkov

We consider two parallel layers of dipolar ultracold Fermi gases at different temperatures and calculate the heat transfer between them. The effective interactions describing screening and correlation effects between the dipoles in a single…

Atomic Physics · Physics 2016-03-09 B. Renklioglu , B. Tanatar , M. Ö. Oktel

Excitation energy transfer (EET) in an organic/inorganic nanohybrid system, composed of a single \textit{para}-sexiphenyl (6P) molecule physisorbed on a finite-sized MoS$_2$ nanoflake, is investigated theoretically. % The electronic…

Mesoscale and Nanoscale Physics · Physics 2026-01-22 Yan Meng , Kainan Chang , Luxia Wang

When a temperature gradient is applied to a polymer solution, the polymer typically migrates to the colder regions of the fluid as a result of thermal diffusion (Soret effect). However, in recent thermodiffusion experiments on…

Soft Condensed Matter · Physics 2009-11-10 Jutta Luettmer-Strathmann

We study the relaxation dynamics of laser-excited non-equilibrium electron distributions in the valence- and conduction band of a dielectric. We apply Boltzmann collision integrals to trace the influence of different scattering mechanisms…

Statistical Mechanics · Physics 2023-04-28 Nils Brouwer , Steffen Hirtle , Baerbel Rethfeld

We study the mean velocity and diffusion constant in three related models of molecular Brownian ratchets. Brownian ratchets can be used to describe translocation of biopolymers like DNA through nanopores in cells in the presence of…

Statistical Mechanics · Physics 2018-08-08 Matthias Uhl , Udo Seifert

This work analyzes the electromagnetic energy transfer rate between donor and acceptor quantum emitters close to a graphene-coated wire. We discuss the modification of the energy transfer rate when the emitters are interfaced via surface…

Optics · Physics 2019-10-23 Julieta Olivo , Mauro Cuevas

The dynamics and performance of a two-coil resonant coupled wireless power transfer system are investigated. At high coupling, the frequency-splitting phenomenon occurs, in which the power transferred to the load attains its maximum at two…

Applied Physics · Physics 2020-12-01 Binh Duc Truong , Thuy Thi-Thien Le , Berardi Sensale-Rodriguez

The research is important for a molecular theory of liquid and has a wide interest as an example solving the problem when dynamic parameters of systems can be indirectly connected with their equilibrium properties. In frameworks of the…

Disordered Systems and Neural Networks · Physics 2007-05-23 Andrei N. Yakunin

We study the nature of the energy transfer process within a pair of coupled two-level systems (donor and acceptor) subject to interactions with the surrounding environment. Going beyond a standard weak-coupling approach, we derive a master…

Quantum Physics · Physics 2011-04-05 Dara P. S. McCutcheon , Ahsan Nazir

Several modern technologies for energy storage and conversion are based on the screening of electric charge on the surface of porous electrodes by ions in an adjacent electrolyte. This so-called electric double layer (EDL) exhibits an…

Soft Condensed Matter · Physics 2021-03-15 Fabian Glatzel , Mathijs Janssen , Andreas Härtel

Over the past 15 years there has been an ongoing debate regarding the influence of the photonic environment on Forster resonance energy transfer (FRET). Disparate results corresponding to enhancement, suppression and null effect of the…

Optics · Physics 2018-08-15 Cristian L. Cortes , Zubin Jacob