Effects of multiple interruptions with trimethylindium-treatment in the InGaN/GaN quantum well on green light emitting diodes

In this study, the influence of multiple interruptions with trimethylindium(TMIn)-treatment in InGaN/GaN multiple quantum wells(MQWs) on green light-emitting diode(LED) is investigated. A comparison of conventional LEDs with the one fabricated with our method shows that the latter has better optical properties. Photoluminescence(PL) full-width at half maximum(FWHM) is reduced, light output power is much higher and the blue shift of electroluminescence(EL) dominant wavelength becomes smaller with current increasing. These improvements should be attributed to the reduced interface roughness of MQW and more uniformity of indium distribution in MQWs by the interruptions with TMIn-treatment.     

测量低压脉冲载荷的补偿桥式脉冲电源

本文介绍了一种可用于测量10~2～10~3巴量级压力脉冲的有补偿桥臂的脉冲电源电路。并给出了初步的实验结果。     

LY12-M铝中冲击波衰减机理的实验研究

 应用锰铜压阻计测量了峰压为4.92 GPa的平面冲击波在LY12-M铝中的衰减规律，对试样进行了正电子寿命谱探测和维氏显微硬度测试，分析了位错等缺陷对冲击波非流体动力学衰减的影响，同时还对LY12-M铝的冲击硬化效应进行了探讨。     

YM-2膜式镱应力传感器及其动态压阻特性

本文介绍了用纯度为99.95％的镱作原料,采用真空蒸发、沉积方式制成的低应力传感器。用100 mm压缩气体炮为加载手段,在0～3.4G Pa压力范围内对镱应力传感器进行了标定。