查询词典 polarizing

The UV and IR spectroscopic studies of the monomer films showed that the photoreaction ratio of monomer (about 50%) was higher than the corresponding photosensitive polymer (about 10%, PVCi). The polarized IR spectra proved that obvious anisotropic absorption was displayed in the irradiated photosensitive film. With polarizing microscopy method, we found that these kinds of photoalignment films exhibited good alignment ability, and the stability of the photoalignment film could reach about 100℃. 2 A photosensitive self-assembled monolayer was fabricated that contained photo-cycloadditable groups, such as, coumarin and cinnamate. The reaction process were detected by contact angle method because the IR absorption of monolayer was very weak. The photosensitive self-assembled monolayer promote uniform alignment of nematic liquid crystals by LPUV, and it thermal stability could reach about 130℃. 3 A cationic bolaform amphiphiles was synthesized that had two photosensitive double bonds, and can be polymerized by ultraviolet. A layer-by-layer self-assembled deposition film was prepared in aqueous solution by using this material and poly (sodium 4-styrenesulfonate). The UV-Vis. spectra proved that the multilayers film was uniform and layer-by-layer. When LPUV irradiated the film, the photopolymerizable double bond underwent [2+2] cycloaddition, and the production of the reaction distributed along the polarized direction of incident LPUV. Polarized UV-Vis. spectra indicated that the irradiated self-assembled multiplayer film was anisotropic, and the dichromic ration is about 0.09, it is higher than the spin-coating method of photosensitive polymer or monomer. We used this anisotropic film as alignment layer of nematic liquid crystals, and obtained a uniform and stability alignment result, the static contrast ratio is about 100, which is very close to application of liquid crystal device. This thesis is an instance that the photochemical material was used in the physics region of liquid crystals, the route that was from photosensitive monomer, self-assembled monolayer film to self-assembled multiplayer film was undergone, by this logical research method photoailgnment of liquid crystal was extended and consummated.

围绕上述思路开展了如下工作：1合成了三种可进行光二聚反应的光敏小分子单体，LPUV 辐照制作了光控取向膜；用紫外-可见光谱法和红外光谱法分析了薄膜中的光化学反应，发现小分子的光反应程度可达到50%以上，至少比光敏高分子高出5倍；薄膜的偏振红外光谱证实，经过LPUV 辐照后薄膜出现了明显的各向异性；将小分子光控取向膜制成液晶器件，在偏光显微镜下观察看到均匀一致的液晶取向；并且热稳定性达到100℃左右，接近实用化要求。2制备了含肉桂酸、香豆素基团的自组装单层膜；采用接触角的方法监测自组装反应的动力学过程；紫外-可见光谱证实了自组装单层膜在石英基板表面形成；自组装单层膜经LPUV 辐照后能诱导液晶均匀取向，而且热稳定性可达130℃，热稳定性进一步提高。3合成了含有光敏双键的双季铵盐，在水溶液状态下将它和聚乙烯基苯磺酸钠沉积生成layer-by-layer 自组装多层膜，紫外-可见光谱证实这是一个逐层均匀的沉积；在LPUV 照射下，自组装膜中的光敏双键按照偏振方向发生[2+2]环加成反应，形成取向膜，用二向色性值评价的分子取向度高于高分子及小分子光控取向膜的水平；实验证明用自组装多层膜制成的液晶器件亮暗态均匀，静态对比度约为100，达到实用化器件的水平。

To obtain precise result, itis necessary, in the aspect of hardware, to set up one stable optics system with highSNR, only if so, can we do the measurement with the steady NIR. To do so, we designthe optics system using AOTF, and take some measures to increase the light energyand the system SNR, which includes the three layers structure of the light chamber,the equipments to cover the useless light, polarizing to reduce the influence of 0 gradelight and focalize the light with lens. Apart from the hardware aspect, according to theexperiments, we can see that the different temperatures between at setting up themodels and at predicting the results will affect the prediction results in a way, and theaffection extent will be increased along with the increase of the temperaturedifference. Moreover, the light energy that can be detected will be different with thecontact pressure, and the match of the refractive indexes between the tissue and thesurroundings will enhance the light transmission depth, which will take moreinformation of the tissue. So, during the measurement, we should ensure the sametemperature between measuring and predicting, the same contact pressure at everymeasurement and the match of the indexes between the tissue and the surroundings aspossible as we can.

要提高测量精度，从硬件方面就必须有一个稳定的、信噪比较高的分光光路系统，以此得到稳定的近红外光来进行无创检测，针对这个目的，我们设计了 AOTF 分光光路系统，并在系统中采用一定的措施如三层灯室结构、遮光筒以减小杂散光、起偏和检偏来减小 0 级光影响、透镜汇聚等等来提高出射光的能量和系统的信噪比；从其他影响因素方面，通过实验，我们得到不同的建模温度对于预测结果有一定的影响，且影响随着温度的差值越大而越大，另外散反射光谱的能量也随着接触压力的不同而不同，组织的折射率与环境匹配将加大光的入射深度，从而能携带更多的组织信息，所以在测量时我们尽可能保证同一温度、保证同一接触压力以及利用物理或者化学的方法使组织与环境折射率匹配等。

It was proved by the DSC and heatable stage polarizing microscope that in the temperature falling process, the initial temperature of the crystallite was 5 - 20 ℃ lower than that of the reference sample.

测试结果显示：这种复合材料的纺丝温度降低了15℃左右，DSC和热台偏光显微镜实验证实了在降温过程中，微晶出现的起始温度比对照样品降低了5～20℃。

The analysis results with polarizing microscope show that CW slurry has excellent permeability and wettability on lamprophyre, and can be continuously permeated into microfractures and remarkably improve the mechanical property of the rocks.

通过灌浆前、后偏光显微镜分析可以看出：CW高性能化学灌浆材料对煌斑岩具有良好的渗透性、浸润性，能均匀、连续分布于岩样的微细裂隙间。

The chemical structure and mesomorphic properties of this series of compounds were characterized by FT-IR, MS, 1H NMR, polarizing optical microscopy and DSC techniques.

利用FT-IR、MS、1H NMR、POM、DSC 表证了所得化合物的结构和介晶性，并选择几种双液晶基元液晶测定了它们的机械黏度和在主体液晶中的螺旋扭曲力

The structure and properties of TKGM were characterized by FT-IR, polarizing optical microphotography, low temperature differential scanning calorimetry and TG-DSC. The results indicated: a graft copolymerization reaction was taken place between KGM and VAc, MA.

采用傅立叶红外光谱、偏光显微镜照片、低温差示扫描量热仪和综合热分析等付改性材料的结构和性能进行了分析表征。

ABSTRACT The content of constituents in YongAn middlings and Zhongliang shan middlings has been calculated in light of the results of ultimate analysis and X-ray diffraction, and the structure of middlings has been studied by means of polarizing microscope.

本文以高灰低硫的永安中煤（Ad=51.11%，St=0.35%）和低灰高硫的中梁山中煤（Ad=32.29%，St=3.02%）为研究对象，首先利用中煤灰成分化学元素分析和X射线粉末晶体衍射的矿物成分分析结果，通过计算求出了中煤中各组成成分的含量，并借助偏光显微镜对中煤矿物质的赋存状态进行了研究。

Differential scanning calorimetry and polarizing microscope were used to study their liquid properties. Among them, nine are found to exhibit liquid crystal properties, and most of them displayed as heating monotropic liquid crystals. There are one or two mesophases and certain phase transition temperature,Δ H and temperature range of liquid crystal.

用差示扫描量热仪和偏光显微镜研究了其液晶性，发现其中九个配合物具有液晶性，多为升温单变液晶，有一至两个中介相，有确定的相转变温度、热焓和相变区间。

The perturbance strongly affects the quality of transmitted polarizing light.

扰动的出现影响了透射偏振光的质量。

The minute random variation of the incident angle around the structure angle of air-gaped Glan-type polarizing prism gives rise to the perturbance found in the experiment.

实验中空气隙间隔格兰型棱镜的振动引起入射角在棱镜的结构角附近作微小变化，从而导致了透射光强的扰动。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。