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Transport through a molecule sandwiched between two metallic electrodes and coupled to a mesoscopic ring that threads a magnetic flux $\phi$ is studied. An analytic approach for the electron transport through the molecular bridge system is…

介观与纳米尺度物理 · 物理学 2010-01-10 Santanu K. Maiti

Single-cycle optical pulses with a controlled electromagnetic waveform allow to steer the motion of low-energy electrons in atoms, molecules, nanostructures or condensed-matter on attosecond dimensions in time. However, high-energy…

光学 · 物理学 2020-11-11 Yuya Morimoto , Peter Baum

The efficiency of an organic light-emitting diode (OLED) depends on the microscopic orientation of transition dipole moments of the molecular emitters. The most effective materials used for light generation have threefold symmetry, which…

化学物理 · 物理学 2015-02-26 Florian Steiner , Sebastian Bange , Jan Vogelsang , John M. Lupton

The orbital angular momentum of electrons offers a promising, yet largely unexplored, degree of freedom for ultrafast, energy-efficient information processing. As the foundation of orbitronics, understanding how orbital currents propagate…

材料科学 · 物理学 2026-03-06 Tongyang Guan , Jiahao Liu , Wentao Qin , Yongwei Cui , Shunjia Wang , Yizheng Wu , Zhensheng Tao

Trains of ultrashort laser pulses separated by the time of rotational revival (typically, tens of picoseconds) have been exploited for creating ensembles of aligned molecules. In this work we introduce a chiral pulse train - a sequence of…

量子物理 · 物理学 2013-05-29 S. Zhdanovich , A. A. Milner , C. Bloomquist , J. Floß , I. Sh. Averbukh , J. W. Hepburn , V. Milner

The goal of the present article is to review the major developments that have led to the current understanding of molecule-field interactions and experimental methods for manipulating molecules with electromagnetic fields. Molecule-field…

原子物理 · 物理学 2013-09-18 Mikhail Lemeshko , Roman V. Krems , John M. Doyle , Sabre Kais

It is common knowledge that atoms can form molecules if they attract each other. Here, we show that it is possible to create molecules where bound states of the atoms are not the result of attractive interactions but have the topological…

量子物理 · 物理学 2022-09-05 Ali Emami Kopaei , Xuedong Tian , Krzysztof Giergiel , Krzysztof Sacha

Exposing a molecule to intense light pulses may bring this molecule to a nonstationary quantum state, thus launching correlated dynamics of electronic and nuclear subsystems. Although much had been achieved in the understanding of…

化学物理 · 物理学 2024-04-11 Nikolay V. Golubev , Jiří Vaníček

We present a deformation-dependent propulsion phenomenon for soft particles such as cells in microchannels. It is based on a broken time reversal symmetry generated by a fast forward and slow backward motion of a fluid which does not…

软凝聚态物质 · 物理学 2022-02-22 Winfried Schmidt , Andre Förtsch , Matthias Laumann , Walter Zimmermann

We present a theoretical study of the mixed-field-orientation of asymmetric top molecules in tilted static electric field and non-resonant linearly polarized laser pulse by solving the time-dependent Schr\"odinger equation. Within this…

化学物理 · 物理学 2016-12-21 Juan J. Omiste , Rosario González-Férez

Half-cycle picosecond pulses have been produced from thin photo-conductors, when applying an electric field across the surface and switching on conduction by a short laser pulse. Then the transverse current in the wafer plane emits…

光学 · 物理学 2015-06-03 H. -C. Wu , J. Meyer-ter-Vehn

In pulsating active matter, topological defects are motile despite the absence of any macroscopic flows and microscopic self-propulsion. We reveal that this motility arises from a ratchet effect: the mechanochemical coupling between local…

软凝聚态物质 · 物理学 2026-05-26 Luca Casagrande , Alessandro Manacorda , Etienne Fodor

We report that femtosecond surface plasmon polariton pulses can propagate along a metal-dielectric waveguide and that they can be modulated on the femtosecond timescale by direct ultrafast optical excitation of the metal, thereby offering…

光学 · 物理学 2010-09-03 K. F. MacDonald , Z. L. Samson , M. I. Stockman , N. I. Zheludev

Electron transfer (ET) at molecule-metal or molecule-semiconductor interfaces is a fundamental reaction that underlies all electro-chemical and molecular electronic processes as well as substrate-mediated surface photochemistry. In this…

化学物理 · 物理学 2023-06-21 Yu Wang , Wenjie Dou

We develop a theoretical model for how organic molecules can control the electronic and transport properties of an underlying transistor channel to whose surface they are chemically bonded. The influence arises from a combination of…

介观与纳米尺度物理 · 物理学 2015-05-13 Smitha Vasudevan , Neeti Kapur , Tao He , Matthew Neurock , James M. Tour , Avik W. Ghosh

Based on the derivation of the macroscopic Maxwell's equations by spatial averaging of the microscopic equations, we discuss the electrophysiology of living organs. Other methods of averaging (or homogenization) like the bidomain model are…

生物物理 · 物理学 2010-06-18 Günter Scharf , Christoph Scharf

Recently, it was predicted theoretically and verified experimentally that a pair of delayed and cross-polarized short laser pulses can create molecular ensembles with a well defined sense of rotation (clockwise or counterclockwise). Here we…

We propose a novel scheme to generate single-cycle terahertz (THz) pulses via reflection of an optical femtosecond pulse train from a thin layer of nonlinear resonant medium. Our method is based on a coherent control of low-frequency…

Statistical theory of the dielectric susceptibility of polar liquid crystals is proposed. The molecules are not uniaxial but similar to cones. It is assumed that the permanent dipole moment of a molecule is parallel to the axis of the…

软凝聚态物质 · 物理学 2011-02-04 A. Kapanowski , T. Wietecha

We study the excitation of asymmetric-top (including chiral) molecules by two-color femtosecond laser pulses. In the cases of non-chiral asymmetric-top molecules excited by an orthogonally polarized two-color pulse, we demonstrate,…

光学 · 物理学 2021-09-16 Long Xu , Ilia Tutunnikov , Yehiam Prior , Ilya Sh. Averbukh