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An overview is given of theoretical progress on self-organization at the nanoscale in reactive systems of heterogeneous catalysis observed by field emission microscopy techniques and at the molecular scale in copolymerization processes. The…

统计力学 · 物理学 2017-08-23 Pierre Gaspard

We propose and theoretically analyze an experiment where displacement sensing of an optically levitated nanoparticle in front of a surface can be used to measure the induced dipole-dipole interaction between the nanoparticle and its thermal…

Self-propelled micromotors can efficiently convert ambient energy into mechanical motion, which is of great interest for its potential biomedical applications in delivering therapeutics noninvasively. However, navigating these micromotors…

软凝聚态物质 · 物理学 2024-06-25 Binglin Zeng , Jialin Lai , Jingyuan Chen , Yaxin Huang , Changjin Wu , Chao Huang , Qingxin Guo , Xiaofeng Li , Shuai Li , Jinyao Tang

Molecular dynamics simulations are used to model the thermal properties of a fluid containing solid nanoparticles (nanofluid). The flexibility of molecular simulation allows us to consider the effects of particle mass, particle-particle and…

材料科学 · 物理学 2009-09-29 Mihail Vladkov , J. -L. Barrat

It has been recently reported that elastic waves induced by nanosecond light pulses can be used to drive nano-motion of micro-objects on frictional solid interfaces, a challenging task for traditional techniques using tiny optical force. In…

光学 · 物理学 2023-02-10 Wei Lyu , Weiwei Tang , Wei Yan , Min Qiu

Inspired by its central role in many biological processes, the transport of biopolymers across nanoscale pores is at the heart of a single-molecule sensing technology aimed at nucleic acid and protein sequencing, as well as biomarker…

生物物理 · 物理学 2025-10-16 Martin Charron , Breeana Elliott , Nada Kerrouri , Liqun He , Vincent Tabard-Cossa

We study the effect of spatial confinement on the strength of propulsive diffusiophoretic forces acting on a particle that generates density gradients by exploiting the chemical free energy of its environment. Using a recently proposed…

统计力学 · 物理学 2007-09-17 M. N. Popescu , S. Dietrich , G. Oshanin

We describe the process of Foerster transfer between semiconductor nanoparticles in the presence of a metal subsystem (metal nanocrystals). In the presence of metal nanocrystals, the Foerster process can become faster and more long-range.…

介观与纳米尺度物理 · 物理学 2009-11-11 Alexander O. Govorov , Jaebeom Lee , Nicholas A. Kotov

Living systems routinely consume energy to achieve motility, often using intricate biomolecular machinery. In this work, we show that active droplets can sustain indefinite self-propulsion of a spherical colloid in an otherwise homogeneous,…

软凝聚态物质 · 物理学 2026-05-01 Benjamin Sorkin , Ned S. Wingreen

We revisit the fundamental topic of light scattering by single homogenous nanoparticles from the new perspective of excitation and manipulation of toroidal dipoles. It is revealed that besides within all-dielectric particles, toroidal…

光学 · 物理学 2015-10-28 Wei Liu , Jianhua Shi , Bing Lei , Haojun Hu , Andrey E. Miroshnichenko

The interaction mechanisms of water with nanoscale geometries remain poorly understood. This study focuses on behaviour of water clusters under varying external electric fields with a particular focus on molecular ferroelectric devices. We…

This paper discusses a quantum optical heating mechanism which might play an important role in sonoluminescence experiments. We suggest that this mechanism occurs during the final stages of the bubble collapse phase and accompanies the…

量子物理 · 物理学 2012-07-31 Almut Beige , Antonio Capolupo , Andreas Kurcz

Recent advances in the field of active soft matter promise a lot. Both, experimental advances and theoretical understanding point towards new material classes in reach, for example self-healing materials that might switch their properties…

生物物理 · 物理学 2026-04-17 Jannis Fischer , Alejandro Jurado , Timo Betz

Nanomechanical resonators are used with great success to couple mechanical motion to other degrees of freedom, such as photons, spins, and electrons. Mechanical vibrations can be efficiently cooled and amplified using photons, but not with…

介观与纳米尺度物理 · 物理学 2020-08-24 C. Urgell , W. Yang , S. L. de Bonis , C. Samanta , M. J. Esplandiu , Q. Dong , Y. Jin , A. Bachtold

Resistive random-access memories, also known as memristors, whose resistance can be modulated by the electrically driven formation and disruption of conductive filaments within an insulator, are promising candidates for neuromorphic…

We derive a coarse-grained description of the dynamics of a nanoparticle immersed in an isothermal simple fluid by performing a systematic coarse graining of the underlying microscopic dynamics. As coarse-grained or relevant variables we…

介观与纳米尺度物理 · 物理学 2016-01-20 Pep Español , Aleksandar Donev

Efficient excitation and harvesting of hot carriers from nanoscale metals is central to many emerging photochemical, photovoltaic, and ultrafast optoelectronic applications. Yet direct experimental evidence of the relevant femtosecond…

介观与纳米尺度物理 · 物理学 2023-06-13 Jacob Pettine , Paolo Maioli , Fabrice Vallee , Natalia Del Fatti , David J. Nesbitt

Stimulated amplification of fluorescence signals is obtained under conditions which approach biocompatibility by adding NanoParticles (NPs) to an aqueous solution of fluorescein. The conditions for the stability of the suspension and…

生物物理 · 物理学 2023-10-05 S. Bonnefond , J. Cazareth , S. Abelanet , A. Reynaud , M. Vassalli , F. Brau , G. L. Lippi

We investigate the interplay of thermophoretic force and interfacial tension on the capillary filling dynamics of a Newtonian nanofluid in a microchannel. In our model, we also consider an intricate thermofluidic coupling by taking the…

流体动力学 · 物理学 2017-11-29 Soumya Bandyopadhyay , Suman Chakraborty

We experimentally investigate active motion of spherical Janus colloidal particles in a viscoelastic fluid. Self-propulsion is achieved by a local concentration gradient of a critical polymer mixture which is imposed by laser illumination.…

软凝聚态物质 · 物理学 2016-03-31 Juan Ruben Gomez-Solano , Alex Blokhuis , Clemens Bechinger