搜索结果: 1-15 共查到“物理学 Crystals”相关记录90条 . 查询时间(0.042 秒)
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Approximation and computation for the linear and nonlinear eigenvalue problems in photonic crystals
光子晶体 线性非线性特征值问题 近似 计算
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2023/5/15
In this talk, we discuss the approximation and computation for the linear and nonlinear eigenvalue problems in photonic crystals. We discretize the shifted Maxwell operator with edge finite elements a...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Computation of phononic crystals using the PG finite element method
PG有限元法 计算 声子晶体
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2023/4/17
Phononic crystals are composite materials with periodic distribution of two or more media. The difficulty of computing the band structure of the phononic crystals lies in capturing the complex geometr...
Harvard-led researchers document quantum melting of Wigner crystals（图）
维格纳晶体 量子熔化 量子相变
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2023/6/21
In 1934, physicist Eugene Wigner made a theoretical prediction based on quantum mechanics that for decades years went unseen.
'Blinking' crystals may convert carbon dioxide into fuels（图）
Blinking crystals convert carbon dioxide into fuels
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2020/7/24
Imagine tiny crystals that "blink" like fireflies and can convert carbon dioxide, a key cause of climate change, into fuels.A team funded by the U.S. National Science Foundation has created ...
Scientists make “squarest” ice crystals ever
Scientists squarest ice crystals ever
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2017/7/24
You won’t find ice cubes like this in your freezer.An international team of scientists has set a new record for creating ice crystals that have a near-perfect cubic arrangement of water molecules—a fo...
NYU Chemists Color World of 3D Crystals with Advances in Self-Assembly
NYU Chemists Color World 3D Crystals Self-Assembly
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2017/3/30
A team of New York University chemists has created self-assembled, three-dimensional DNA crystals that can bind a separate, dye-bearing strand—a breakthrough that enhances the functionality of these t...
Researchers create 'time crystals' envisioned by Princeton scientists（图）
Researchers time crystals Princeton scientists
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2017/3/30
Time crystals may sound like something from science fiction, having more to do with time travel or Dr. Who. These strange materials — in which atoms and molecules are arranged across space and time — ...
第四届声子晶体/声学超材料，声子传输/声子耦合与拓扑声子学国际会议（The 4th International Conference on Phononic Crystals/Metamaterials,Phonon Transport/Coupling and Topological Phononics ）
第四届 声子晶体/声学超材料，声子传输/声子耦合与拓扑声子学 国际会议
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2017/1/11
“声子学（Phononics）”是近年来凝聚态物理领域发展起来的一门新兴学科。随着其相关研究工作不断从理论探索走向工程应用，工程实践驱动为该学科的发展注入了新的活力。声子学的发展体现出物理、振动、声学、热学、力学、材料和机械工程等多学科交叉融合发展的特点，受到国内外相关领域的广泛关注，展现出蓬勃的生命力和广阔的前景。声子学研究的基本对象是一种假想的虚拟粒子——“声子（Phonon）”。声子概念的提...
Unconventional quasiparticles predicted in conventional crystals
Unconventional quasiparticles predicted conventional crystals
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2016/8/1
An international team of researchers has predicted the existence of several previously unknown types of quantum particles in materials. The particles — which belong to the class of particles known as ...
Facetless crystals that mimic starfish shells could advance 3-D-printing pills（图）
Crystal p 3-D-printing pills
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2014/12/1
ANN ARBOR—In a design that mimics a hard-to-duplicate texture of starfish shells, University of Michigan engineers have made rounded crystals that have no facets.
Facetless crystals that mimic starfish shells could advance 3-D-printing pills
3-D-printing pills Facetless crystals
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2014/10/30
ANN ARBOR—In a design that mimics a hard-to-duplicate texture of starfish shells, University of Michigan engineers have made rounded crystals that have no facets.
Superconductivity could form at high temperatures in layered 2-D crystals
Superconductivity could form high temperatures layered 2-D crystals
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2014/8/14
An elusive state of matter called superconductivity could be realized in stacks of sheetlike crystals just a few atoms thick, a trio of physicists has determined.
Technique simplifies the creation of high-tech crystals
Technique simplifies creation of high-tech crystals
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2014/8/14
Highly purified crystals that split light with uncanny precision are key parts of high-powered lenses, specialized optics and, potentially, computers that manipulate light instead of electricity. But ...
Two-component solitons under a spatially modulated linear coupling: Inverted photonic crystals and fused couplers
Two-component solitons spatially modulated linear Inverted photonic crystals fused couplers Optics
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2012/5/29
We study two-component solitons and their symmetry-breaking bifurcations (SBBs) in linearly coupled photonic systems with a spatially inhomogeneous strength of the coupling. One system models an inver...
Transmission Character of General Function Photonic Crystals
General Photonic crystals Dispersion relation Transmissivity
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2012/5/29
In the paper, we present a new general function photonic crystals (GFPCs), which refractive index of medium is a arbitrary function of space position. Unlike conventional photonic crystals (PCs), whic...