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We propose a general method to cool the translational motion of molecules. Our method is an extension of single photon atomic cooling which was successfully implemented in our laboratory. Requiring a single event of absorption followed by a…

化学物理 · 物理学 2015-05-13 Edvardas Narevicius , S. Travis Bannerman , Mark G. Raizen

The SHIELD-HIT transport code, in several versions, has been used for modeling the interaction of therapeutic beams of light nuclei with tissue-equivalent materials for a long time. All versions of the code include useful option of…

核理论 · 物理学 2015-12-16 N. Sobolevsky , A. Botvina , N. Buyukcizmeci , A. Ergun , L. Latysheva , R. Ogul

Transition-metal-oxide (TMO) heterostructures are promising candidates for building photon-harvesting devices which can exploit optimal quantum transport of charge excitations generated by light absorption. Here we address the explicit role…

量子物理 · 物理学 2020-04-22 Chahan M. Kropf , G. Luca Celardo , Claudio Giannetti , Fausto Borgonovi

The determination of the neutrino mass is an open issue in modern particle physics and astrophysics. The direct mass measurement is the only theory-unrelated experimental tool capable to probe such quantity. The HOLMES experiment aims to…

When a molecule dissociates, the exact Kohn-Sham (KS) and Pauli potentials may form step structures. Reproducing these steps correctly is central for the description of dissociation and charge-transfer processes in density functional theory…

化学物理 · 物理学 2021-03-23 Jakub Kocák , Eli Kraisler , Axel Schild

Electron transport properties of a biphenyl molecule are studied based on the Green's function formalism. The molecule is sandwiched between two metallic electrodes, where each benzene ring is threaded by a magnetic flux $\phi$. The results…

介观与纳米尺度物理 · 物理学 2009-09-15 Santanu K. Maiti

The idea that excitonic state (electronic) coherences are of fundamental importance to natural photosynthesis gained popularity when, a decade ago, slowly dephasing quantum beats were observed in the two-dimensional electronic spectra of…

An application of impedance measurement technique (IMT) for a detection of quantum tunneling in molecular structures is investigated. A charged particle which tunnels in a two-well potential is electrically coupled to a high-quality…

介观与纳米尺度物理 · 物理学 2016-08-31 Anatoly Yu. Smirnov

The non-Markovianity of the electron transfer in an oligothiophene-fullerene heterojunction described by a spin-boson model is analyzed using the time dependent decoherence canonical rates and the volume of accessible states in the Bloch…

化学物理 · 物理学 2017-09-13 Etienne Mangaud , Christoph Meier , Michèle Desouter-Lecomte

We employ an effective field theory (EFT) that exploits the separation of scales in the p-wave halo nucleus $^8\mathrm{B}$ to describe the process $^7\mathrm{Be}(p,\gamma)^8\mathrm{B}$ up to a center-of-mass energy of 500 keV. The…

核理论 · 物理学 2018-10-03 Xilin Zhang , Kenneth M. Nollett , Daniel R. Phillips

In the primary step of light-harvesting, the energy of a photon is captured in antenna chlorophyll as an exciton. Its efficient conversion to stored chemical potential occurs in the special pair reaction center, which has to be reached by…

In this work we investigate the theory for three different uni-directional population transfer schemes in trapped multilevel systems which can be utilized to cool molecular ions. The approach we use exploits the laser-induced coupling…

量子物理 · 物理学 2010-01-27 C. Lazarou , M. Keller , B. M. Garraway

Characterizing conformational transitions in physical systems remains a fundamental challenge, as traditional sampling methods struggle with the high-dimensional nature of molecular systems and high-energy barriers between stable states.…

化学物理 · 物理学 2025-09-22 Magnus Petersen , Gemma Roig , Roberto Covino

Excited state hydrogen transfer (ESHT) is responsible to various photochemical processes of aromatics including photoprotection of nuclear basis. Its mechanism is explained by the internal conversion from aromatic $\pi$$\pi$* to…

原子与分子团簇 · 物理学 2017-12-06 Mitsuhiko Miyazaki , Ryuhei Ohara , Claude Dedonder , Christophe Jouvet , Masaaki Fujii

The first-order phase transitions and related thermodynamics properties are primary concerns of materials sciences and engineering. In traditional atomistic simulations, the phase transitions and the estimation of their thermodynamic…

化学物理 · 物理学 2023-08-17 Gang Seob Jung , Yoshihide Yoshimoto , Kwang Jin Oh , Shinji Tsuneyuki

Measurements of the thermal conductance of single-molecule junctions have recently been reported for the first time. It is presently unclear, how much the heat transport can be controlled through molecule-internal effects. The search for…

介观与纳米尺度物理 · 物理学 2025-10-01 Matthias Blaschke , Fabian Pauly

We analyse a device aimed at the conversion of heat into electrical energy, based on a closed cycle in which a distiller generates two solutions at different concentrations, and an electrochemical cell consumes the concentration difference,…

化学物理 · 物理学 2022-09-14 Andrea Carati , Massimo Marino , Doriano Brogioli

The transport of water and protons in the cathode catalyst layer (CCL) of proton exchange membrane (PEM) fuel cells is critical for cell performance, but the underlying mechanism is still unclear. Herein, the ionomer structure and the…

化学物理 · 物理学 2024-02-08 Yichao Huang , Panagiotis E. Theodorakis , Zhen Zeng , Tianyou Wang , Zhizhao Che

The striking efficiency of energy transfer in natural photosynthetic systems and the recent evidence of long-lived quantum coherence in biological light harvesting complexes has triggered much excitement, due to the evocative possibility…

介观与纳米尺度物理 · 物理学 2015-10-13 Yonatan Dubi

Modern electronics are developing electronic-optical integrated circuits, while their electronic backbone, e.g. field-effect transistors (FETs), remains the same. However, further FET down scaling is facing physical and technical…

光学 · 物理学 2020-06-02 Jason K. Marmon , Satish C. Rai , Kai Wang , Weilie Zhou , Yong Zhang
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