The curing and pyrolysis of the article can be performed with microwave radiation. An example structure is a gradient density lattice with a mirror surface for use in a cryogenically cooled infrared optical system such as an orbiting space telescope.William A. Goodman...
The formation of Sr silicate at the interface was suggested by considering the fact of the core-level spectra of the Si2p, O1s, and Sr3d. Our results suggest that the presence of a coincident site lattice at the interface between Si and a Sr silicate and/orSrTiO3may help to stabilize...
The atomic structure in metals is characterized by a lattice of positive-charged ions with a moving electron cloud all around. The electron cloud model can explain some properties of metals, such as high thermal and electrical conductivity and their malleability and ductility. Metals are optically ...
Because of the unique structure design, the CNT@SiO2microspheres have uniformly distributed Si, oxygen, and carbon (Supplementary Fig.4) even though the particle is ~6–8 µm large in diameter (Supplementary Fig.5). Furthermore, the CNT@Si microspheres produced from the CNT@SiO2microspheres...
Focussing on existing open questions and controversies, we present results of recent theoretical studies of single substitutional and interstitial chalcogens and 3d transition-metal impurities in silicon. For the chalcogen point defects S, Se and Te we identify their positions in the silicon lattice ...
These results confirm the promising perspectives of 3D Bragg ptychography for the investigation of complex nano-structured crystals in material science.Similar content being viewed by others Revealing nano-scale lattice distortions in implanted material with 3D Bragg ptychography Article Open access 03 ...
We have investigated the antiferromagnetic phase of two-dimensional (2D), three-dimensional (3D), and extended Hubbard models on a bipartite cubic lattice ... Adolfo,Avella,Ferdinando,... - 《Physical Review B》 被引量: 41发表: 2001年 Neutron-, X-ray- and electron-diffraction measurements fo...
Extended x-ray-absorption fine-structure measurements for 0.1, 0.7, and 7 at. % arsenic impurities in single-crystal silicon yield As-to-Si nearest-neighbor distances of 2.41+/-0.02 Å, which are 0.06 Å (2.5%) greater than the Si-to-Si distance in pure silicon. Next-nearest...
Mathematically, the whole structure can be generated by three vectors (a1, a2, a3) linearly independent (therefore, not coplanar). To be more precise, the nodes of the lattice are positioned (with respect to a given Cartesian reference Oxyz) by Definition 1: The vectors a1, a2, a3 are ...
For the first time an attempt has been made to determine the lattice parameter, density, and molar mass of an isotopically highly enriched silicon-28 crystal. The goal was to achieve an independent value of Avogadro's constant of accuracy equal or superior to current best values obtained from ...