Study of Band Gap Broadening Method and Waveguide Transmission Property of Photonic Crystal Formed by Holographic Lithography 全息光子晶体禁带展宽方法和波导传输特性的研究
Realization of Miniaturization and Band Broadening of Lowpass Filter Using SIR Open-Stub 用SIR型开路枝节实现低通滤波器小型化和宽阻带
The structure of the autosampler resulted in reduction of band broadening related to the sample introduction and improvement of anticarryover performance. 这种自动进样器的结构具有减小样品引入造成的谱带展宽和防止样品过载的特点。
As a result, we accurately estimate the effective signals in high frequency band and better the noise suppression, thus broadening the effective frequency band. 这样做的结果,使高频段有效信号的估计更加准确,能更好地改善去噪效果,从而达到拓宽有效频带的目的。
Band Broadening Practice of waveguide Circulator 波导环行器的频带展宽实践
And the laser would possibly generate several wavelengths within the band at any gap distance, with each wavelength containing a certain number of fine longitudinal modes depending upon its broadening width. 而且,输出一般为多波长,每个波长包含精细纵模结构,纵模的数目和谱线展宽有关。
In this dissertation, the distribution of electric field, velocity field and sample concentration field are solved numerically with coordinate transform and finite volume method, and effects of constriction ratio on sample transport velocity and band broadening are presented. 本论文采用坐标变换和有限体积法对弯曲微通道中的电场分布、流场分布和样品浓度场分布进行了数值计算,考察了收缩比对样品输运速度和区带增宽程度的影响。
The results demonstrate that the layer thickness disorder yields band broadening and wider view field with respect to periodic multilayer, but accompanied with a reduction in reflectance peak. 对反射率的相对测试表明,与周期膜系相比,非周期多层膜的带宽展宽,但峰值反射率略有降低。
Based on numerical and experimental results, for separation channels with a width of 80/ ttn, 31% is the optimal constriction ratio to reduce band broadening by introducing narrowed turns. 综合数值计算和实验结果,对于宽度为80μm的分离微通道,采用收缩弯曲微通道降低样品区带增宽时的最优收缩比为31%。
Examples of the analysis applied to some typical cases have been illustrated and the emission spectral band broadening originated from junction temperature variation during pulse operation is briefly discussed. 文中利用所得结果结合实例进行了讨论,并讨论了脉冲工作情况由于结温变化所导致的发射频谱展宽效应。
By taking into account the light hole and heavy hole valence band structures and their combined density of states, the expression of saturation absorption is deduced from the imaginary part of the susceptibility, which is similar to the mode of inhomogeneous broadening of two-level system. 考虑了锗中轻、重空穴价带的能带结构并利用轻、重空穴价带的复合态密度,由电极化率的虚部推得类似于非均匀展宽两能级系统模型的饱和吸收具有的形式。
With the consideration of many factors including band broadening, the dimensions of the structure were designed and optimized. 综合考虑区带展宽等因素,确定了检测器的结构尺寸。
Experimental results also indicate that electrophoresis transport velocity of the sample band in the microchannel turn and band broadening caused by racetrack effect agree very well with results of numerical computation, not only qualitatively but also quantitatively after the normalization. 实验结果也说明,分离微通道中样品输运速度和弯道效应引起的区带增宽程度与数值计算结果不但在定性上一致,而且归一化处理后在定量上一致。
The nonlinear mechanism is the excitonic band broadening. 非线性机制为激子带展宽。
It is shown that when the intra-column effect of mass transfer and diffusion is the main controlling factor of band broadening, the column efficiency decreases with the increase of viscosity of methanol/ water mixture; 当柱外扩散效应是柱效的控制因素时。
The lumped kinetic model for liquid chromatography was adopted to describe the chromatographic process in supercritical fluid by introducing all band broadening effects to the overall mass transfer coefficient, which can be estimated from the equation of HETP. 借鉴液相色谱分离过程的集总动力学模型,提出将轴向扩散对色谱峰展宽的贡献归结于表观总传质系数,由线性色谱的理论等板高度方程对总传质系数进行估算。
The detail is as follows. 1. An off-line centrifugal column chromatography system was installed. With this system, the band broadening of two cis-trans-isomers was obtained. 具体内容如下:1.构建了离线式离心柱色谱系统,应用该系统获得了一对顺反异构体在离心色谱柱内的谱带展宽情况。
At room temperature and pressure and in the infrared absorption band, the intensive overlaps of measured gas absorption lines due to pressure broadening lead to the resolution of the measured PAS signal as a puzzle of the spectral data processing. 常温常压下,在红外波段,由于多种待测气体分子的吸收谱线密集交叉重叠,加上压力加宽因素,导致测得的光声光谱信号的分辨成为光谱数据处理的一个难题。