搜索结果: 1-15 共查到“知识库 理学 Te”相关记录46条 . 查询时间(0.044 秒)
二维BX(X=S,Se,Te)结构预测与性质的第一性原理研究
结构预测 电子结构 力学性质 载流子迁移率
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2022/3/28
采用基于粒子群优化算法的结构预测程序CALYPSO结合密度泛函理论的VASP软件包，预测得到二维BX(X=S、Se、Te)的最低能量结构，该结构是由B和X原子形成的双层褶皱的六角密堆积结构，层与层之间较强的B-B键是稳定结构的关键．凝聚能和声子谱计算结果表明二维BX(X=S、Se、Te)在热力学和动力学上均是稳定的．能带结构和电子态密度的计算分析发现三种二维材料均呈现间接带隙半导体行为，带隙分别为...
A new assessment of the elastic thickness (Te) structure of the Indian shield, and its implications
Elastic thickness Indian Shield Seismic Zoning Himalayas
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2015/8/24
The elastic thickness (Te) of continents is a matter of much debate. Recent studies have shown that a number of factors control the continental Te, including age, heat flow, and lithospheric thickness...
Femmes et migration en Côte d’Ivoire : le mythe de l’autonomie
de l’autonomie Cô te d’Ivoire
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2015/7/21
En Côte d’ivoire, comme dans d’autres pays africains les migrations traditionnellement dominéespar les hommes se féminisent progressivement. Les résultats de l’Enquête Ivoirienne sur les Migratio...
黑龙江三道湾子金矿Au-Ag-Te矿物交生结构对成矿条件的指示
三道湾子金矿 金银碲化物 交生结构 成矿条件
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2013/8/21
黑龙江省三道湾子金矿为国内外首例独立的碲化物型金矿床, 其中90%以上是碲化物金. 经显微镜、扫描电子显微镜、电子探针、X射线衍射分析对该矿床碲化物矿物的研究, 发现普遍存在Au-Ag-Te矿物交生结构现象, 主要有碲银矿(主晶)-针碲金银矿(客晶)和碲金银矿(主晶)-碲银矿(客晶)的交生. 主晶和客晶矿物的物相和化学成分稳定, 客晶矿物呈边界较为平直的蠕虫状和带状较为定向地均匀分布于主晶矿物内部...
本文采用光学显微镜、扫描电镜和电子探针对黑龙江省三道湾子金矿中Au-Ag-Te系列矿物碲银矿、碲金银矿、针碲金银矿、斜方碲金矿和碲金矿进行了详细的矿物学研究,本次研究还发现Au2Te的存在。碲化物矿物多呈粒状或脉状分布于石英或硫化物矿物的裂隙中。Au-Ag-Te系列矿物中,Au含量与Ag含量呈负相关性,与Te含量呈弱的负相关性。结合Au-Ag-Te成分共生图解及镜下特征对金银碲化物矿物共生组合进行...
本文采用光学显微镜、扫描电镜和电子探针对黑龙江省三道湾子金矿中Au-Ag-Te系列矿物碲银矿、碲金银矿、针碲金银矿、斜方碲金矿和碲金矿进行了详细的矿物学研究,本次研究还发现Au2Te的存在。碲化物矿物多呈粒状或脉状分布于石英或硫化物矿物的裂隙中。Au-Ag-Te系列矿物中,Au含量与Ag含量呈负相关性,与Te含量呈弱的负相关性。结合Au-Ag-Te成分共生图解及镜下特征对金银碲化物矿物共生组合进行...
The Hartman paradox and new model of scattering the plane TE polarized light wave on a dielectric layer
optical analogue of the Hartman paradox time and velocity of tunneling the light energy layered structure FTIR
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2011/8/4
Abstract: The problem of describing the temporal aspects of scattering the plane light wave on an uniform dielectric layer is reconsidered. In the standard model of this scattering process a correct d...
Coupled-wave model for square-lattice photonic-crystal lasers with TE polarization -- a general approach
Coupled-wave model square-lattice photonic-crystal lasers TE polarization
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2011/8/3
Abstract: A general coupled-wave model is presented for square-lattice photonic crystal (PC) lasers with transverse-electric polarization. This model incorporates the high-order coupling effects that ...
常压下Se和Te电子结构和弹性性质的第一性原理计算
第一性原理计算 能带结构 弹性系数 德拜温度
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2012/11/14
利用基于密度泛函的第一性原理, 计算ⅥA族元素Se和Te在常压下的能带结构、 电子态密度、 弹性系数和德拜温度. 能带结构和电子态密度的计算结果表明: Se为间接带隙半导体, Se费米面附近的导带和价带主要来自外层4p4电子的贡献, 4s2电子对费米面附近的导带和价带贡献较少; Te为直接带隙半导体, Te费米面附近的导带和价带主要来自外层5p4电子的贡献, 5s2电子对费米面附近的导带和价带贡...
Evaluation of Compton scattering sequence reconstruction algorithms for a portable position sensitive radioactivity detector based on pixelated Cd(Zn)Te crystals
Evaluation of Compton scattering sequence reconstruction algorithms a portable position sensitive radioactivity detector based on pixelated Cd(Zn)Te crystals
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2011/1/4
We present extensive simulation studies on the performance of algorithms for the Compton sequence reconstruction used for the development of a portable spectroscopic instrument (COCAE), with the capab...
Temperature-dependent chirped coherent phonon dynamics in Bi$_{2}$Te$_{3}$ using high intensity femtosecond laser pulses
Temperature-dependent chirped coherent phonon dynamics femtosecond laser pulses
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2010/11/18
Degenerate pump-probe reflectivity experiments have been performed on a single crystal of
bismuth telluride (Bi2Te3) as a function of sample temperature (3K to 296K) and pump intensity
using ∼...
Effect of p-d hybridization and structural distortion on the electronic properties of AgAlM2 (M = S, Se, Te) chalcopyrite semiconductors
A. Chalcopyrite A. Semiconductors E. Density Functional Theory E. TB-LMTO
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2010/11/18
We have carried out ab-initio calculation and study of structural and elec-tronic properties of AgAlM2 (M = S, Se, Te) chalcopyrite semiconductors using Density Functional Theory (DFT) based self cons...
Demonstration of high-Q TE-TM photonic crystal nanobeam cavities
high-Q TE-TM photonic crystal nanobeam cavities Physics
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2010/11/16
We experimentally demonstrate high Quality factor dual-polarized TE-TM photonic crystal nanobeam cavities. The free-standing nanobeams are fabricated in a 500 nm thick silicon layer, and are probed u...
Evaluation of Compton scattering sequence reconstruction algorithms for a portable position sensitive radioactivity detector based on pixelated Cd(Zn)Te crystals
Compton scattering sequence algorithms radioactivity detector
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2010/11/17
We present extensive simulation studies on the performance of algorithms for the Compton sequence reconstruction used for the development of a portable spectroscopic instrument (COCAE), with the capa...
Méthodes quasi-statiques pour la simulation numérique discrète des assemblages granulaires
Méthodes quasi-statiques simulation numérique discrète assemblages granulaires
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2010/11/19
Le présent document constitue le chapitre 3 du traitéModélisation numérique discrète des matériaux granulaires, ouvrage collectif, sous la direction de Farhang Radjaï et Frédéric
Dubois, publié ...