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Brownian motors are nanoscale machines that utilize asymmetric physical interactions to generate directed motion in space. The operation mechanism relies on the random motion of nanoscale elements generated by thermal activation. On the…

介观与纳米尺度物理 · 物理学 2024-07-02 Keren Stein , Gautham Vijayan , Ron Bessler , Elad Koren

Quadratic response tensors arise naturally in quantum kinetic descriptions, such as the quantum linear Boltzmann equation (QLBE), where they encode the coupled structure of drift and fluctuations beyond simple positive-definite forms.…

量子物理 · 物理学 2026-05-08 Ansgar Pernice

Lattice structures are increasingly used in various fields of application due to the steady growth of additive manufacturing technology. Depending on the type of lattice, these structures are more or less suitable for energy absorption due…

应用物理 · 物理学 2024-12-10 Sören Bieler , Kerstin Weinberg

Graphdiynes (GDYs) represent a class of 2D carbon materials based on sp-sp$^2$ hybridization with appealing properties and potential applications. Recent advances have demonstrated the experimental self-assembly of GDYs on metal substrates.…

Carbonate minerals are important in Earth's system sciences and have been found on Mars and in meteorites and asteroids, highlighting the importance of impacts in planetary processes. While extensively studied under static compression, the…

Quasisymmetry (QS) provides a novel route to understand and control near-degeneracies, Berry curvature, optical selection rules, and symmetry-protected phenomena in quantum materials. Here we give physical interpretations of the emergence…

材料科学 · 物理学 2026-02-23 Bryan D. Assunção , Emmanuel V. C. Lopes , Tome M. Schmidt , Gerson J. Ferreira

The aim of this work is to investigate contrasting spectral trends observed in carbonaceous chondrites by simulating space weathering effects on a subset of minerals found in these meteorites. We use pulsed laser irradiation to simulate…

地球与行星天体物理 · 物理学 2017-01-02 H. M. Kaluna , H. A. Ishii , J. P. Bradley , J. J. Gillis-Davis , P. G. Lucey

The microstructure, electronic structure, and chemical bonding of chromium carbide thin films with different carbon contents have been investigated with high-resolution transmission electron microscopy, electron energy loss spectroscopy and…

介观与纳米尺度物理 · 物理学 2012-05-04 Martin Magnuson , Matilda Andersson , Jun Lu , Lars Hultman , Ulf Jansson

It is a common point that "soft" condensed matter (like granular materials or foams) can reduce damage caused by impact or explosion. It is attributed to their ability to absorb significant energy. This is certainly the case for a…

软凝聚态物质 · 物理学 2011-11-09 Vitali F. Nesterenko

We study rotational motion of an interacting atomic Bose-Einstein condensate confined in a quadratic-plus-quartic potential. We calculate the lowest energy surface mode frequency and show that a symmetric trapped (harmonic and quartic)…

软凝聚态物质 · 物理学 2007-05-23 Tarun Kanti Ghosh

We investigate magnetism in amorphous carbon as suggested by the recently reported ferromagnetism in a new form of amorphous carbon. We use spin constrained first-principles simulations to obtain amorphous carbon structures with the desired…

材料科学 · 物理学 2018-07-18 Yuki Sakai , James R. Chelikowsky , Marvin L. Cohen

We explore the consequences of including the repulsive three-particle interaction in the model of Bose-Einstein condensate dark matter model or fuzzy dark matter. Such a model based on properly modified Gross-Pitaevskii equation is intended…

星系天体物理 · 物理学 2020-10-14 A. M. Gavrilik , M. V. Khelashvili , A. V. Nazarenko

The approach based on selected set of samples and selected set of analytical tools occurred quite efficient when applying to amorphous carbons thus leading to a transformation of the current representation of the issue based on particulars…

We study the dependence of mechanical conformations of graphene sheets located on flat substrates on the density of unilateral (one-side) attachment of hydrogen, fluorine or chlorine atoms to them. It is shown that chemically modified…

介观与纳米尺度物理 · 物理学 2020-01-08 Alexander V. Savin , Yuriy A. Kosevich

We investigate the interaction energy between two colloidal particles on or immersed in nonadsorbing polymer brushes grafted onto the substrate as a function of the separation of the particles by use of self-consistent field theory…

软凝聚态物质 · 物理学 2007-05-23 Kang Chen , Yu-qiang Ma

The sliding motion of gold slabs adsorbed on a graphite substrate is simulated using molecular-dynamics. The central quantity of interest is the mean lateral force, i.e., the kinetic friction rather than the maximum lateral forces, which…

材料科学 · 物理学 2022-05-04 Hongyu Gao , Martin H. Müser

Nano-precipitates with tripled periodicity along the c-axis are observed in a Ca-rich dolomite sample from Proterozoic carbonate rocks with "molar tooth" structure. This observation is consistent with previous description of d reflections.…

地球物理 · 物理学 2016-08-12 Zhizhang Shen , Hiromi Konishi , Izabela Szlufarska , Philip E Brown , Huifang Xu

We investigate ground state configurations of atomic systems in two dimensions interacting via short range pair potentials. As the number of particles tends to infinity, we show that low-energy configurations converge to a macroscopic…

偏微分方程分析 · 数学 2009-09-07 Yuen Au Yeung , Gero Friesecke , Bernd Schmidt

Although the principal physical behaviour of a material is inherently connected to its fundamental crystal structure, the behaviours observed in the real-world are often driven by the microstructure, which for many polycrystalline…

Graphene, one of the strongest materials ever discovered, triggered the exploration of many 2D materials in the last decade. However, the successful synthesis of a stable nanomaterial requires a rudimentary understanding of the relationship…