نتایج جستجو برای: crystal defect
تعداد نتایج: 251931 فیلتر نتایج به سال:
The presence of defects in diamond induces one-phonon infrared absorption which is not allowed in the perfect crystal due to symmetry. Concomitantly the thermal conductivity is reduced by additional phonon-defect scattering. For single crystal diamonds irradiated with fast neutrons, we find a correlation between the one-phonon absorption and the room-temperature thermal conductivity valid over ...
ترمیم asd primum درافراد با رنج سنی متفاوت معمولا در برگیرنده عوارض کوتاه مدت و تاخیری می باشد. مابصورت مطالعه توصیفی و گذشته نگر در صدد تعیین نتایج جراحی با تکنیک اصلاح شده در بیماران با نقص (partial a-v canal defect)sdprimum در مراکز جراحی قلب کرمانشاه از سال 1373 تا مهرماه 1380 می باشیم.
Defect sites on bone minerals play a critical role in bone remodeling processes. We investigated single crystal hydroxyapatite (100) surfaces bearing crystal defects under acidic dissolution conditions using real-time in situ atomic force microscopy. At defect sites, surface structure-dependent asymmetric hexagonal etch pits were formed, which dominated the overall dissolution rate. Meanwhile, ...
A laser cavity formed from a single defect in a two-dimensional photonic crystal is demonstrated. The optical microcavity consists of a half wavelength-thick waveguide for vertical confinement and a two-dimensional photonic crystal mirror for lateral localization. A defect in the photonic crystal is introduced to trap photons inside a volume of 2.5 cubic half-wavelengths, approximately 0.03 cub...
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