The directional alignment of crystal, on the one hand, effectively controls crack propagation paths and increases strength; on the other hand, induces anisotropy. 云母晶体的定向排列可有效控制裂纹走向,显著提高其强度,也导致材料的各向异性。
Testing for Liquid Crystal Anisotropy Viscosity Coefficient Use Capillary with Voltage Applied 毛细管加电场测试液晶各向异性黏滞系数
Study of Distortions in Nematic Liquid Crystal Based upon the Dispersion Force Pair Potential with Spatial Anisotropy 空间各向异性色散两体势向列相液晶形变研究
Molecular dynamics simulation of stress-induced martensitic phase transformation in NiAl Study of Distortions in Nematic Liquid Crystal Based upon the Dispersion Force Pair Potential with Spatial Anisotropy 应力诱发NiAl单晶马氏体相变的分子动力学模拟空间各向异性色散两体势向列相液晶形变研究
The temperature sensitivity of the frequency as a function of quartz crystal anisotropy is presented by the perturbation equation due to the temperature change. 文章分析了目前声表面波器件温度补偿的状况。利用波扰动方程,分析研究了声表面波器件频率-温度敏感性与石英晶体各向异性参数之间的关系。
But the material has two fatal defects: one was that the crystal was very large anisotropy which made its mechanical strength very low because there was much crack in the material when it cooled. 但同时该材料也存在着两大致命弱点:一是晶体在各个晶轴方向上的差异很大,导致在冷却时产生大量微裂纹,机械强度很低;
Absorption spectra of Nd~ ( 3+): KGW crystal for the three crystallographic axes were investigated at room temperature. The absorption band intensities distinctly revealed the anisotropy of Nd~ ( 3+): KGW. 在室温下测量了掺钕钨酸钾钆(Nd3+∶KGW)晶体三个晶轴方向的吸收光谱,其吸收谱带强度明显显示各向异性。
Liquid crystal materials with negative dielectric anisotropy are widely used in LCD such as DS, ECB, GH, FLC, PDLC modes. 负介电各向异性液晶广泛应用于DS、ECB、GH、FLC,PDLC等显示模式的液晶显示中。
Different piezoelectric substrates in cutting orientation of the same crystal have different piezoelectric effect because of its anisotropy. 晶体的压电性能可通过其压电参数来表征,由于压电体的各向异性,同一晶体的不同切型的基片有着不同的压电参数。
The anisotropy of efficiency of stilbene crystal of φ 18mm × 20mm was presented in the paper. The anisotropy of efficiency was tested in experiments. 本文介绍了φ18mm×20mm芪晶体探测器探测效率存在的各向异性,对探测效率的各向异性从实验上进行了检验。
In Polycrystalline Diamond Compact, the diamond crystal shows: unordered arrange, isotropy, and overcome the shortcomings as subsize, anisotropy, having cleavage plane of diamond monocrystal and so on. 在金刚石复合片中金刚石晶体呈无序排列,各向同性,克服了金刚石单晶体积小、各向异性等缺点。
Moreover, in the valence electron structure of Nd_2Fe_ ( 14) B, Al and Nb atoms will replace Fe atom possessing crystal lattice electrons in the crystal lattice electron-free valence state, enhancing the anisotropy of the hard magnetic phase. Al和Nb原子在Nd2Fe(14)B晶体价电子结构中,以无晶格电子的价态置换有晶格电子的Fe原子价态,导致硬磁性相各向异性的增强;
It is found that the contact damage is related with the crystal lattice orientation anisotropy and doped impurities. 实验发现,硅单晶的硬度不仅与晶体的本身特性&晶向有关,还与所掺入杂质的种类和浓度有关。
From stress-strain curve of calcium carbonate crystal, nano-calcium carbonate crystal is strong anisotropy and nonlinear characteristic. 从碳酸钙晶体的应力-应变曲线看,纳米碳酸钙晶体具有强各向异性和强非线性的特性。
The preferential occupation of Y atom leads to the change of crystal structure and the influence on anisotropy is smaller. Y原子的择优占位导致晶体结构的变化,而对各向异性的影响较小。
In this article, anisotropy of the cubic nonlinear polarization P ( 3) in a cubic crystal is investigated, general expression of anisotropy of nonlinear refractive index is derived, and self-induced polarization change of high intensity light beam in a cubic crystal is discussed. 本文分析了立方晶体三次非线性极化强度P~((3))的各向异性,导出了非线性折射系数各向异性的一般表达式,讨论了强光束在立方晶体中的自感生偏振变化规律。
Influence of Crystal Lattice Vibration to the Magnetic Record Film for Effective Anisotropy and Fatigue Life 晶格振动对磁记录膜有效各向异性及疲劳寿命的影响
Two approaches are being developed and evaluated for the single crystal materials: a macroscopic model that employs anisotropic tensors to model inelastic deformation anisotropy, and a microscopic model based on crystallographic slip systems. 镍基单晶合金蠕变、疲劳寿命的研究方法可分为应用各向异性张量描述非弹性各向异性变形的宏观力学(唯象)模型和基于晶体学滑移变形理论的微观力学模型;
An inhomogenous deformation process is analyzed by application of a macroscopic Hill model and crystal plasticity. The purpose of present work is to give a comparative study of the different description ability of these two different scale models on plastic anisotropy. 采用宏观HILL模型和晶体塑性模型对面心立方单晶(FCC)材料的非均匀变形进行了数值模拟,意在比较两种不同尺度的模型对塑性各向异性的描述能力的差异。
So, it is important to study the effect of KDP crystal anisotropy on the surface roughness. 因此,研究超精密切削KDP晶体材料的各向异性对加工表面粗糙度的影响具有重要的意义。
The membrane of SiO_2, which has lower thermal conductivity compared with SiN_x, is fabricated as heat and electric insulator, and single crystal Si is apt to form reverse-cup structure through anisotropy etching. 利用SiO2相对于sinx有更低的热导率,作为膜式微气体传感器的热绝缘和电绝缘层,而单晶Si适合通过各向异性腐蚀形成倒杯状结构来支撑SiO2膜。
It is important to research the ductile regime turning of KDP crystal and the influence of anisotropy to cutting deformation and surface quality. 因此对KDP晶体塑性域力学特性和各向异性对切削力及加工表面质量的影响进行深入研究具有重要的意义。
The variation of coercivity with particle size is interpreted on the basis of domain structure and crystal anisotropy. 矫顽磁场随晶粒大小不同的改变可以根据畴结构及晶粒各向异性来解释。
The results showed that during the propagation of elliptical Gaussian beams in crystal media, elliptical Gaussian beams increased with increasing of the propagation distance z, its lightfields diffused in the xy plane the same during peak gradually decreased on account of the anisotropy of crystals. 研究表明,由于晶体的各向异性,导致椭圆高斯光束在晶体中传输时,随着传输距离z的增加,其光场在xy平面内扩散,同时峰值逐渐衰减。
Magnetic field is a novel way to control the crystal growth since it can induce the crystal to grow along the direction of lower magnetic energy because of the anisotropy of magnetic susceptibility. 磁场可以诱导磁各向异性材料沿着磁能较小的方向生长,达到控制晶体生长的目的。
The central group identifies the linear structure of liquid crystal molecules, and the terminal group plays a major role in the dielectric liquid crystal materials, optical and other anisotropy nature. 其中,中央基团确定了液晶分子的线状结构,而末端基团则对液晶材料的介电、光学和其它各向异性性质起主要作用。
It also gives the prospect on photonic crystal fiber sensor for application in the future. ( 2) Briefly introduced the optical character, and look photonic crystal molecule as uniaxial crystal, introduced anisotropy index of refraction of uniaxial crystal. 简要介绍了液晶的光学性质,通过把液晶分子等效为单轴晶体,叙述了液晶分子折射率的各向异性。
The difference of crystal orientation for different directions is the main cause of the anisotropy. 晶体取向的不同是造成强迫剪切行为各向异性的主要原因。
Some related properties, such as the crystal and electronic structure, exchange interactions, charge-ordering, electronic transport, CMR effect, magnetic anisotropy, phase separation, effects of doping level and theoretical model, are introduced. 首先回顾了锰氧化物的各种性质,如晶体结构,电子结构,交换作用,电荷有序,输运性与巨磁效应,磁各向异性,相分离,掺杂效应,及理论模型。