Results 261 to 270 of about 146,020 (305)
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On the microhardness of mixed crystals
Journal of Applied Physics, 1980The Kataoka-Yamada model for highly concentrated solid solutions has been used to calculate the microhardness of NaCl-NaBr, KCl-KBr, and KBr-KI systems. The extra hardness in mixed crystals is computed from the amount of hindrance in the transport of ion pairs in the fluctuating stress field produced by the random distribution of anions of different ...
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Mixed crystal deposition in an osteoarthritic joint
The Journal of Pathology, 1977The case of a 72-yr-old woman with osteoarthritis of the shoulder, is described. A mixture of crystals of hydroxyapatite and calcium pyrophosphate dihydrate was identified in the joint tissues using analytical electron microscopy and infra-red spectroscopy.
D V, Doyle +4 more
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Optical dephasing in semiconductor mixed crystals
Physical Review B, 1992The influence of disorder and localization on optical dephasing of excitons in the semiconductor mixed crystals ${\mathrm{CdS}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$${\mathrm{Se}}_{\mathit{x}}$ and ${\mathrm{Al}}_{\mathit{x}}$${\mathrm{Ga}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$As has been investigated by means of time-resolved four-wave mixing and ...
, Siegner +11 more
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ACS Nano, 2011
Physisorbed monolayers based on relatively weak noncovalent interactions can serve as excellent model systems for understanding crystallization of materials in reduced dimensionality. Here we employ a powerful combination of scanning tunneling microscopy (STM), differential scanning calorimetry (DSC), and computational modeling to reveal two ...
Mali, K.S. +7 more
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Physisorbed monolayers based on relatively weak noncovalent interactions can serve as excellent model systems for understanding crystallization of materials in reduced dimensionality. Here we employ a powerful combination of scanning tunneling microscopy (STM), differential scanning calorimetry (DSC), and computational modeling to reveal two ...
Mali, K.S. +7 more
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International Journal of Quantum Chemistry, 2004
AbstractThe character and the magnitude of magnetic interaction in 1‐D stacks of mixed molecular radical crystals (MMRCs) and mixed molecular ion radical crystals (MMIRCs) of alternant aromatic hydrocarbons have already been studied theoretically. In this work nonalternant 1‐D stacks built of π‐electronic subunits are considered. Some of the elementary
I. Minkov, A. Tadjer
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AbstractThe character and the magnitude of magnetic interaction in 1‐D stacks of mixed molecular radical crystals (MMRCs) and mixed molecular ion radical crystals (MMIRCs) of alternant aromatic hydrocarbons have already been studied theoretically. In this work nonalternant 1‐D stacks built of π‐electronic subunits are considered. Some of the elementary
I. Minkov, A. Tadjer
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Polymerization in mixed crystals
Journal of Materials Science, 1980Suitably substituted diacetylenes can be co-crystallized to form substitutional solid solutions. By solid state polymerization of these mixed crystals macroscopic single crystals of statistical copolymers can be obtained. The co-crystallization is described and the influence of crystal composition on structure and reactivity in the solid state is ...
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Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1966
Abstract Calculations have been made of the exciton band structure of the naphthalene crystal in a periodic volume of 10 x 10 x 10 unit cells. Levels belonging to special values of wave vector are reported for the crystal structure at room temperature and at 95 °K.
David Parker Craig, M. R. Philpott
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Abstract Calculations have been made of the exciton band structure of the naphthalene crystal in a periodic volume of 10 x 10 x 10 unit cells. Levels belonging to special values of wave vector are reported for the crystal structure at room temperature and at 95 °K.
David Parker Craig, M. R. Philpott
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Elementary Excitations of Isotope: Mixed Crystals
Physics Reports, 2005This book develops and describes the isotope effect in the low-dimensional structures (down to 3–10 A). Without assuming prior knowledge of quantum physics, present book provides a unifying framework for the basic ideas needed to understand the recent developments in the nanoscience.
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Localization of phonons in mixed crystals
Physical Review B, 1988, Chu, , Zhang
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Mixed crystals of mercury compounds
Physics Letters A, 1968Abstract The electrical properties of HgTeHgSe, HgSeβHgS and HgTeβHgS mixed crystals have been studied. It is suggested that in all these materials the inverted band structure occurs.
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