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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
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...
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
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 ...
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
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
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 — ...
Unconventional quasiparticles predicted in conventional crystals
Unconventional quasiparticles predicted conventional crystals
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
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
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
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
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 ...
Interplay of antiferromagnetism, ferromagnetism and superconductivity in EuFe_2(As_1-xP_x)_2 single crystals
Interplay of antiferromagnetism ferromagnetism superconductivity
2010/11/24
We report a systematic study on the influence of antiferromagnetic and ferromagnetic phases of
Eu2+ moments on the superconducting phase upon doping the As site by isovalent P, which acts as
chemica...
Tunable Vibrational Band Gaps in One-Dimensional Diatomic Granular Crystals with Three-Particle Unit Cells
Tunable Vibrational Band Gaps One-Dimensional Diatomic Granular Three-Particle Unit Cells
2010/11/18
We investigate the tunable vibration filtering properties of one-dimensional diatomic granular crystals composed of arrays of stainless steel spheres and cylinders interacting via Hertzian contact. Th...
Multifunctional oxides are promising materials because of their fundamental physical properties as well as their potential in applications1. Among these materials,multiferroics exhibiting ferroelectri...
Influence of itinerancy on the magnetic properties of the single crystals of Sr2YRu1-xCuxO6 solid solutions
double perovskite ruthinate XAS valence states
2010/11/23
X-ray absorption spectroscopy(XAS) Ru L-edge and O K-edge measurements on single crystals of Sr2YRu1-xCuxO6 (x=0.01-0.05) solid solutions show that Cu replaces Ru in the lattice which results in a lat...