搜索结果: 1-15 共查到“知识库 晶体学 crystal”相关记录20条 . 查询时间(0.854 秒)
Robust optimization of adiabatic tapers for coupling to slow-light photonic-crystal waveguides
Tapered structure coupling photonic crystal waveguides candles nano
2015/8/7
We investigate the design of taper structures for coupling to slow-light modes of various photonic-crystal waveguides while taking into account parameter uncertainties inherent in practical fabricatio...
Direct correlation of crystal structure and optical properties in wurtzite/zinc-blende GaAs nanowire heterostructures
Direct correlation of crystal structure optical properties
2010/11/25
A novel method for the direct correlation at the nanoscale of structural and optical properties
of single GaAs nanowires is reported. Nanowires consisting of 100% wurtzite and nanowires presenting zi...
Eighth-order phase-field-crystal model for two-dimensional crystallization
Eighth-order phase-field-crystal model two-dimensional crystallization
2010/11/25
We present a derivation of the recently proposed eighth order phase field crystal model [Jaatinen et al. , Phys. Rev. E 80, 031602 (2009)] for the crystallization of a solid from an undercooled melt.
Dense packing crystal structures of physical tetrahedra
Dense packing crystal structures physical tetrahedra
2010/11/24
We present a method for discovering dense packings of general convex hard particles and apply it to study the dense packing behavior of a one-parameter family of particles with tetrahedral symmetry re...
Enhancing Ionic Conductivity of Bulk Single Crystal Yttria-Stabilized Zirconia by Tailoring Dopant Distribution
Ionic Conductivity of Bulk Single Crystal Dopant Distribution
2010/11/19
We present an ab-initio based kinetic Monte Carlo model for ionic conductivity in single crystal yttria-stabilized zirconia. Ionic interactions are taken into account by combining density functional t...
Reentrant and Isostructural Transitions in a Cluster-Crystal Former
Reentrant and Isostructural Transitions Cluster-Crystal Former
2010/11/18
We study the low-temperature behavior of a simple cluster-crystal forming system through simulation.The phase behavior is found to be hybrid between the Gaussian core and penetrable
sphere models. Th...
Single crystal growth of BaFe$_{2-x}$Co$_x$As$_2$ without fluxing agent
Single crystal growth fluxing agent
2010/11/18
We report a simple, reliable method to grow high quality BaFe2−xCoxAs2 single crystal samples
without using any fluxing agent. The starting materials for the single crystal growth come from
we...
Calculation of thermostable directions and the influence of bias electric field on the propagation of the Lamb and SH waves in langasite single crystal plates
Calculation of thermostable directions influence of bias electric field
2010/11/25
Paper is presented the results of computer simulation. Effect of the dc electric field nfluence on the propagation of Lamb and SH waves and its temperature coefficients of delay in piezoelectric langa...
Determination of the Upper Critical Field of a Single Crystal LiFeAs: The Magnetic Torque Study up to 35 Tesla
iron-based superconductor LiFeAs upper critical field anisotropy
2010/11/18
We report on the upper critical field Bc2 of a superconducting LiFeAs single crystal with
Tc ∼16K, determined from magnetic torque measurements in dc-magnetic fields up to 35T and
at temperatu...
Single Crystal Study of Competing Rhombohedral and Monoclinic Order in Lead Zirconate Titanate
Single Crystal Study of Competing Rhombohedral Monoclinic Order Lead Zirconate Titanate
2010/11/23
Neutron diffraction data obtained on single crystals of PbZr1−xTixO3 with x = 0.325 and x =
0.460, which lie on the pseudorhombohedral side of the morphotropic phase boundary, suggest a
coexis...
Antiferromagnetic ordering in EuPtGe$_3$ single crystal
EuPtGe3 non-centrosymmetric antiferromagnetism resistivity
2010/11/25
Magnetic properties of single crystalline EuPtGe3, crystallizing in the non-centrosymmetric BaNiSn3-type crystal strcuture have been studied by means of magnetisation, electrical resistivity, heat cap...
Valence-bond crystal in the extended Kagomé spin-1/2 quantum Heisenberg antiferromagnet: A variational Monte Carlo approach
Valence-bond crystal extended Kagomé spin-1/2 quantum variational Monte Carlo approach
2010/11/24
The highly-frustrated spin-1=2 quantum Heisenberg model with both nearest (J1) and next-
nearest (J2) neighbor exchange interactions is revisited by using an extended variational space
of projected ...
Single-crystal Grains and Grain Boundaries in Graphene Grown by Chemical Vapor Deposition
Single-crystal Grains Grain Boundaries Chemical Vapor Deposition
2010/11/25
Graphene has attracted enormous attention due to its numerous remarkable properties and wide range of potential applications. To fully realize its potential, graphene needs to be synthesized in large ...
Engineering chromium related single photon emitters in single crystal diamond
Engineering chromium single photon emitters single crystal diamond
2010/10/27
Color centers in diamond as single photon emitters, are leading candidates for future
quantum devices due to their room temperature operation and photostability. The recently
discovered chromium rel...
Effects of temperature on the crystal structure of epidote: a neutron single-crystal diffraction study at 293 and 1070K
epidote high-temperature neutron single-crystal diffraction structurally incorporated water hydrogen bonding.
2014/5/20
The effects of temperature on the crystal structure of a natural epidote [Ca-1.925 Fe0.745Al2.265Ti0.004Si3.037O12(OH), a = 8.890(6), b = 5.630(4), c = 10.150(6) and beta = 115.36(5)A degrees, Sp. Gr....