电光学

Optical encoder is a kind of angle displacement photoelectrical sensors. It is also called photoelectrical shaft encoder.

光学编码器又称光电轴角编码器，是一种集光、机、电为一体的数字测角装置。

Optical encoder is a kind of angle displacement photoelectrical sensors. It is also called photoelectrical shaft encoder.

中文摘要光学编码器又称光电轴角编码器，是一种集光、机、电为一体的数字测角装置。

We adopt a similar discotic liquid crystalline synthesis way to synthesize target molecules 7, 11, 15, 19, 21 in this article. The target molecules have a central triphenylene core and different side chains including triphenylamine derivatives and carbazole molecules. We observe these molecules optical and electrochemical properties and the effect of hole-transport layers in organic light emitting diode.

本篇论文的研究主旨是采用类似盘状液晶的合成方式，以三伸苯作为分子的核心，藉由改变不同的三苯胺及咔唑醚基侧链来合成目标化合物7、11、15、19、21，并观察分子的光学性质变化，电化学行为，以及作为电洞传输材料在有机电激发光元件上的效果。

Capillary phenomena was studied and discussed by the scholars about 200 years ago, but the progress was slow due to the limited equipments and manufacture precision of the microchannel.In recent years, because of the rapid development of MEMS and micromachining, many applications of the capillary flow is widely developing in some modern processes, such as underfilling of flip chip, flow in microfluidic chip or biochip, and a variety of other fields.

摘要 毛细现象大约在200年前便断断续续被欧美学者所研究讨论，但由於当时微细加工受到仪器设备和制造精度的限制，因此发展极为缓慢；近年来由於微机电系统与微细加工之精进，许多具有微流道的应用设备，陆续被制作问世，加上光学显微镜与影像撷取设备的普遍，对於研究此课题的推展极有助益；且随著微生医、覆晶底胶充填与微流体系统等领域之受到重视，毛细现象导致的充填问题、驱动原理及液体流动的控制，都变得相当的重要；本研究基於如此的动机与目的，进行微流道内液体之毛细流动现象及时间的探讨。

Chiral nonracemic fluoro-organic molecules with a fluorine atom on a stereogenic center are readily prepared via chiral electrophilic fluorinating reagent-mediated enantioselective fluorinations, substrate-controlled enantioselective electrophilic fluorinations, chiral metal complexes and asymmetric catalyst—directed catalytic enantioselective fluorinations.

高光学活性的手性氟化物可通过手性亲电氟化试剂诱导的立体选择性氟化反应，基于底物的手性氟化反应以及手性催化剂诱导的不对称催化氟化反应等来制备。

For the realization of this idea, on each side of the lens two closely neighboured fine-meshed grids of the shape of optical lenses are required which must be kept on electrical potentials different from each other.

为了实现这种设计，需要在透镜的每一端有两个离得很近的，具有光学透镜形状的细网，并且分别带有不同的电势。

The KTP crystal is periodically poled by electric field utilizing metal and liquid electrodes.

分析了KTP晶体的介电特性、光学特性和光损伤特性等主要性质。

Chiral SalanCrX complexesa saturated version of SalenCr(ⅢX are designed,and in conjunction with an ionic quaternary ammonium salt or organic strong base can efficiently catalyze the asymmetric,regio-and stereoselective alternating copolymerization of CO_2 with rac-PO at mild conditions to afford isotactic-enriched polycarbonates with～95%head-to-tail linkages and moderate enantioselectivity.

本论文在Salen构型配体的基础上，设计合成了一系列手性Salan型铬配合物，并将其与季铵盐/有机强碱组成亲电-亲核双组分催化体系，在室温下可以有效的催化CO_2和环氧丙烷的不对称交替共聚反应，实现了CO_2和环氧丙烷的不对称交替共聚反应的区域和立体化学控制，得到95%的头尾连接单元和中等光学纯度(对映体过量值ee%≈70%)的全同结构的聚碳酸酯。

Antimony doped tin oxide nano-powder was prepared by hydrothermal synthesis.

锑锡氧化物(antimony doped tin oxide，简称ATo)是一种n型导电材料，具有优良的导电性能和光学性能，被广泛地应用于各种平板显示器…、太阳能电池川、电致变色功能薄膜、红外遥感探测等领域。

It greatly reduces the noise from the discontinuous spectrum in the arc and adapts to the seriously fluctuating welding current during the process and obtains the clear images of the welding pool using common industrial CCD camera.

在对铝合金焊接光谱分析的基础上，以焊接电弧光中的连续光谱作为光源，采用宽带滤波方法设计的全新的光学图像传感器，利用普通工业CCD摄像机获得了画面清晰、质量稳定的铝合金焊接熔池区域图像。

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。