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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...
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...
In 1934, physicist Eugene Wigner made a theoretical prediction based on quantum mechanics that for decades years went unseen.
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 ...
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...
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...
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 — ...
“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...
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 ...
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.
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.
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.
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 ...
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...
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...

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