碲镉汞退火过程的电子结构变化的理论模型

本文提出了退火过程中碲镉汞电子结构变化的理论模型,并根据此理论模型建立了理论公式.由理论公式经计算得出的理论曲线与实验曲线很好地吻合,从而证明了理论模型的正确性.     

碲镉汞电子结构缺陷的正电子湮灭研究

碲镉汞(Hg_(1-x)Cd_xTe,或称MCT),是60年代问世的一种性能优良的红外探测材料,它的电性能在很大程度上取决于电子结构中的缺陷:自然缺陷(空穴、填隙原子、空位和络化物等);扩散缺陷(位错、晶粒边界、沉积、熔点物和非掺入的杂质等).键稳模型断言,在MCT中,a.缺陷的形成和动态特性是热激活的;b.Hg-Te键很弱,汞空位是主要的自然缺陷;c.大多数扩散缺陷是电激活的.但是,迄今不能清楚地说明缺陷形成的动态过程及其与材料电性能的关系.正电子湮没技术(PAT)对于研究原子尺度的缺陷极其敏感.本文以PAT为手段,研究MCT退火过程中,缺陷浓度与电阻率的关系,以及充分退火后MCT的电阻率与温度的关系.     

数字化角膜塑形术的临床研究

应用数字化角膜塑形镜（简称MCT镜）对青少年近视矫治临床对比分析.对60例118眼近视青少年验配角膜塑形镜片并进行随访检测分析.结果发现,数字化角膜塑形镜片在减低和控制青少年的近视上比使用传统OK镜更有效.     

A study on coupling technique and implementation of the wave-circulation coupled model

The coupler is fundamental for a coupled model to realize complex interactions among compo- nent models. This paper focuses on the coupling process of Wave-Circulation （W-C） coupled model which consists of MASNUM （key laboratory of marine science and numerical modeling wave model） and POM （ Princeton Ocean Model）. The current coupling module of this coupled model is based on the inefficient I/O file, which has already become a performance bottleneck especially when the cou- pled model utilizes a large number of processes. To improve the performance of the W-C model, a flexible coupling module based on the model coupling toolkit （MCT） is designed and implemented to replace the current I/O file coupling module in the coupled model. Empirical studies that we have carried out demonstrate that our online coupling module can dramatically improve the parallel per- formance of the coupled model. The online coupling module outperforms the I/O file coupling mod- ule. When processes increase to 96, the whole process of EXP-C takes only 695.8 seconds, which is only 58.8% of the execution time of EXP-F. Based on our experiments under 2D Parallel Decom- position （2DPD）, we suggest setting parallel decomposition strategies automatically to component models in order to achieve high parallel efficiency.     

HgCdTe/CdZnTe的MOVPE生长形貌特性

描述了碲锌镉(CZT)衬底性质对碲镉汞(MCT)薄膜结构的影响,碲锌镉晶片的取向、结晶完整性、缺陷浓度及对碲锌镉晶片的生长前处理都会影响碲镉汞薄膜表面特性,薄膜结构随碲锌镉衬底质量提高而改善。     

Development of a Measurement System Far-IR Using a MCT Sensor

The far-infrared radiation （Far-IR） has good effects on us, promoting the circulation of the blood and metabolic. So textile products including far-IR have been developed. But it is very difficult to measure the amount of far-IR in the textile quicHy and correctly. Newly developed Mercury Cadmium Telluride （MCT） sensor system could solve this problem.     

微量结晶法的改进

对传统的微量结晶法作了改进：（1）用毛细管和EP管代替微量提取器，并使用水浴加热取代酒精灯加热提取；（2）用烘箱烘烤代替酒精灯间歇加热。新方法的优点：方法更加简洁，易于操作，节省时间，特别适于处理较多标本；结果更加可靠，避免了人为因素对结果造成的干扰。     

国外最新电力电子器件的概述

本文概述了国外最新电力电子器件，给出了它们的等效电路，控制原理及器件特点。这些最新器件包括ＩＧＢＴ、ＳＩＴ、ＳＩＴＨ、ＭＣＴ。