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We overview our recent results on the nonlinear localized modes in two-dimensional (2D) photonic crystals and photonic-crystal waveguides. Employing the technique based on the Green function, we describe the existence domains for nonlinear…

光学 · 物理学 2007-05-23 Serge F. Mingaleev , Yuri S. Kivshar

In this paper, we present a novel 3D formation control scheme for directed graphs in a leader-follower configuration, achieving (almost) global convergence to the desired shape. Specifically, we introduce three controlled variables…

系统与控制 · 电气工程与系统科学 2025-02-05 Omid Mirzaeedodangeh , Farhad Mehdifar , Dimos V. Dimarogonas

A model of a phase-separating two-component Langmuir monolayer in the presence of a photo-induced reaction interconvering two components is formulated. An interplay between phase separation, orientational ordering and treaction is found to…

斑图形成与孤子 · 物理学 2009-11-10 Ramon Reigada , Alexander S. Mikhailov , Francesc Sagues

With the advent of space-based precision photometry missions the quantity and quality of starspot light curves has greatly increased. This paper presents a large number of starspot models and their resulting light curves to: 1) better…

太阳与恒星天体物理 · 物理学 2020-08-13 Gibor Basri , Riya Shah

A model including two nonlinear chains with linear and nonlinear couplings between them, and opposite signs of the discrete diffraction inside the chains, is introduced. For [$\chi ^{(3)}$] nonlinearity, the model finds two different…

斑图形成与孤子 · 物理学 2009-11-10 P. G. Kevrekidis , B. A. Malomed , Z. Musslimani

We present neural architectures that disentangle RGB-D images into objects' shapes and styles and a map of the background scene, and explore their applications for few-shot 3D object detection and few-shot concept classification. Our…

计算机视觉与模式识别 · 计算机科学 2021-07-22 Mihir Prabhudesai , Shamit Lal , Darshan Patil , Hsiao-Yu Tung , Adam W Harley , Katerina Fragkiadaki

Inspired by Geoffrey Hinton emphasis on generative modeling, To recognize shapes, first learn to generate them, we explore the use of 3D diffusion models for object classification. Leveraging the density estimates from these models, our…

计算机视觉与模式识别 · 计算机科学 2024-09-27 Nursena Koprucu , Meher Shashwat Nigam , Shicheng Xu , Biruk Abere , Gabriele Dominici , Andrew Rodriguez , Sharvaree Vadgama , Berfin Inal , Alberto Tono

Two-dimensional (2D) materials are among the most studied ones nowadays, because of their unique properties. These materials are made of, single- or few atom-thick layers assembled by van der Waals forces, hence allowing a variety of…

介观与纳米尺度物理 · 物理学 2020-12-17 Pascal Puech , Iann Gerber , Fabrice Piazza , Marc Monthioux

We perform 3D lithography simulations by using a finite-element solver. To proof applicability to real 3D problems we investigate DUV light propagation through a structure of size 9 microns times 4 microns times 65 nm. On this relatively…

光学 · 物理学 2009-05-28 S. Burger , R. Köhle , L. Zschiedrich , H. Nguyen , F. Schmidt , R. März , C. Nölscher

In contrast to three-dimensional (3D) crystals that melt via a first-order transition, two-dimensional (2D) crystals can exhibit various melting scenarios under different temperatures, pressures, and particle interactions, particularly when…

材料科学 · 物理学 2024-10-16 Peng Hua , Yilong Han

We construct a two-dimensional electric circuit model for creeping discharge. Two types of discharge, surface corona and surface leader, are modeled by a two-step function of conductance. Branched patterns of surface leaders surrounded by…

斑图形成与孤子 · 物理学 2010-04-08 Hidetsugu Sakaguchi , Sahim M. Kourkouss

DC microgrids are becoming popular as effective means to integrate various renewable energy resources. Constant power loads (CPLs) may yield instability due to the negative impedance characteristic. This paper analyzes the stability of the…

系统与控制 · 计算机科学 2018-04-24 Zhangjie Liu , Mei Su , Yao Sun , Hua Han , Xiaochao Hou , Josep M. Guerrero

Mode-locking is a process in which different modes of an optical resonator establish, through nonlinear interactions, stable synchronization. This self-organization underlies light sources that enable many modern scientific applications,…

An asymptotic method for finding instabilities of arbitrary $d$-dimensional large-amplitude patterns in a wide class of reaction-diffusion systems is presented. The complete stability analysis of 2- and 3-dimensional localized patterns is…

patt-sol · 物理学 2009-10-30 C. B. Muratov , V. V. Osipov

3D Gaussian Splatting (3DGS) has emerged as a prominent technique with the potential to become a mainstream method for 3D representations. It can effectively transform multi-view images into explicit 3D Gaussian through efficient training,…

计算机视觉与模式识别 · 计算机科学 2024-12-18 Yanqi Bao , Tianyu Ding , Jing Huo , Yaoli Liu , Yuxin Li , Wenbin Li , Yang Gao , Jiebo Luo

This paper concerns pattern formation in 2-component reaction-diffusion systems with linear diffusion terms and a local interaction. We propose a new instability framework with 0-mode Hopf instability, $m$ and $m + 1$ mode Turing…

动力系统 · 数学 2023-11-14 Hirofumi Izuhara , Shunsuke Kobayashi

A new method for the creation of 3D solitary topological modes, corresponding to vortical droplets of a two-component dilute superfluid, is presented. We use the recently introduced system of nonlinearly coupled Gross-Pitaevskii equations,…

量子气体 · 物理学 2018-07-18 Yaroslav V. Kartashov , Boris A. Malomed , Leticia Tarruell , Lluis Torner

We present new experimental results on the development of turbulent spots in channel flow. The internal structure of a turbulent spot is measured, with Time Resolved Stereoscopic Particle Image Velocimetry. We report the observation of…

流体动力学 · 物理学 2013-11-20 Grégoire Lemoult , Konrad Gumowski , Jean-Luc Aider , José Eduardo Wesfreid

Predicting how the world can evolve in the future is crucial for motion planning in autonomous systems. Classical methods are limited because they rely on costly human annotations in the form of semantic class labels, bounding boxes, and…

计算机视觉与模式识别 · 计算机科学 2023-05-02 Tarasha Khurana , Peiyun Hu , David Held , Deva Ramanan

3D Gaussian Splatting (3DGS) has revolutionized 3D scene reconstruction, which effectively balances rendering quality, efficiency, and speed. However, existing 3DGS approaches usually generate plausible outputs and face significant…

图形学 · 计算机科学 2025-07-22 Beizhen Zhao , Yifan Zhou , Sicheng Yu , Zijian Wang , Hao Wang