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We studied the curvature-driven roughening of a disk domain pattern with a variable interface window. The relaxation of interface is driven by negative surface tension . When a domain boundary propagates radially at a constant rate, we…

混沌动力学 · 物理学 2015-06-11 Yong-Jun Chen , Yuko Nagamine , Tomohiko Yamaguchi , Kenichi Yoshikawa

Estimating brain microstructure has important applications in medicine and neuroscience. Diffusion-weighted magnetic resonance imaging enables measuring microstructure \textit{in vivo}. Conventional biophysical model fitting can be accurate…

医学物理 · 物理学 2026-03-09 Leevi Kerkelä , Hui Zhang

Controlling segregation is both a practical and a theoretical challenge. In this Letter we demonstrate a manner in which rotation-induced segregation may be controlled by altering the geometry of the rotating containers in which granular…

软凝聚态物质 · 物理学 2014-10-24 S. Gonzalez , C. R. K. Windows-Yule , S. Luding , D. J. Parker , A. R. Thornton

Graphite has been used as neutron moderator or reflector in many nuclear reactors. The irradiation of graphite in a nuclear reactor results in a complex population of defects. Heating of the irradiated graphite at high temperatures results…

Graph generative modelling has become an essential task due to the wide range of applications in chemistry, biology, social networks, and knowledge representation. In this work, we propose a novel framework for generating graphs by adapting…

机器学习 · 统计学 2026-02-04 Anthony Stephenson , Ian Gallagher , Christopher Nemeth

Sky models used in radio interferometric data processing primarily consist of compact and discrete radio sources. When there is a need to model large scale diffuse structure such as the Galaxy, specialized source models are sought after for…

天体物理仪器与方法 · 物理学 2024-12-04 Sarod Yatawatta

We develop a theory for distributed branch points and investigate their role in determining the shape and influencing the mechanics of thin hyperbolic objects. We show that branch points are the natural topological defects in hyperbolic…

微分几何 · 数学 2021-02-03 Toby L. Shearman , Shankar C. Venkataramani

We propose a mechanical granular graphene obtained by replacing the carbon atoms with macroscopic spherical stainless steel beads in contact. The experimental measured dispersion relation is presented, in conjunction with evidence of the…

应用物理 · 物理学 2019-06-05 Li-Yang Zheng , Florian Allein , Vincent Tournat , Vitalyi Gusev , Georgios Theocharis

Domain generalization refers to the problem where we aim to train a model on data from a set of source domains so that the model can generalize to unseen target domains. Naively training a model on the aggregate set of data (pooled from all…

机器学习 · 计算机科学 2022-02-16 A. Tuan Nguyen , Toan Tran , Yarin Gal , Atılım Güneş Baydin

Graphene's intrinsically corrugated and wrinkled topology fundamentally influences its electronic, mechanical, and chemical properties. Experimental techniques allow the manipulation of pristine graphene and the controlled production of…

材料科学 · 物理学 2025-09-09 Fabian L. Thiemann , Patrick Rowe , Andrea Zen , Erich A. Müller , Angelos Michaelides

In a class of generalized gravity theories with general couplings between the scalar field and the scalar curvature in the Lagrangian, we can describe the quantum generation and the classical evolution of both the scalar and tensor…

广义相对论与量子宇宙学 · 物理学 2015-06-25 J. Hwang

We firstly generalize the massive scalar propagator for planar gravitational waves propagating on Minkowski space obtained recently in Ref. [1]. We then use this propagator to study the response of a freely falling Unruh-DeWitt detector to…

广义相对论与量子宇宙学 · 物理学 2022-12-21 Tomislav Prokopec

We seek to cover a parametric domain with a set of evenly spaced bands which number and widthvaries according to a density field. We propose an implicit procedural algorithm, that generates theband pattern from a pixel shader and adapts to…

计算几何 · 计算机科学 2020-03-04 Jimmy Etienne , Sylvain Lefebvre

Controlled modification of graphene properties is essential for its proposed electronic applications. Here we describe a possibility of tuning electrical properties of graphene via electron beam irradiation. We show that by controlling the…

材料科学 · 物理学 2015-10-28 G. Liu , D. Teweldebrhan , A. A. Balandin

Explaining observed properties in terms of underlying shape degrees of freedom is a well--established prism with which to understand atomic nuclei. Self--consistent mean--field models provide one tool to understand nuclear shapes, and their…

核理论 · 物理学 2015-12-01 P. D. Stevenson , P. M. Goddard , A. Rios

Magneto-transmission of a thin layer of bulk graphite is compared with spectra taken on multilayer epitaxial graphene prepared by thermal decomposition of a SiC crystal. We focus on the spectral features evolving as \sqrt{B}, which are…

介观与纳米尺度物理 · 物理学 2010-10-12 M. Orlita , C. Faugeras , G. Martinez , D. K. Maude , J. M. Schneider , M. Sprinkle , C. Berger , W. A. de Heer , M. Potemski

We study static distributions of ferrofluid submitted to non-uniform magnetic fields. We show how the normal-field instability is modified in the presence of a weak magnetic field gradient. Then we consider a ferrofluid droplet and show how…

流体动力学 · 物理学 2018-03-14 Thibault Vieu , Clément Walter

How does one generalize differential geometric constructs such as curvature of a manifold to the discrete world of graphs and other combinatorial structures? This problem carries significant importance for analyzing models of discrete…

组合数学 · 数学 2023-06-27 J. F. Du Plessis , Xerxes D. Arsiwalla

We investigate the existence of coordinate transformations which bring a given vector field on a manifold equipped with an involutive distribution into the form of a second-order differential equation field with parameters. We define…

微分几何 · 数学 2011-12-06 T. Mestdag , M. Crampin

Indentation has been widely used for investigating the mechanical behavior of glasses. However, how the various microscopic properties (such as atomic structure and mechanics) of glass evolve from the immediate contact with the indenter to…

无序系统与神经网络 · 物理学 2023-05-09 Linfeng Ding , Ranran Lu , Lianjun Wang , Qiuju Zheng , John C. Mauro , Zhen Zhang