多端耦合量子点分子桥的量子输运特性研究

利用非平衡格林函数方法,对五个量子点连结而成的有四个终端的耦合量子点分子桥进行了理论研究和数值模拟,得出了入射电子通过耦合量子点分子桥传输到各个终端的电子隧穿概率的规律. 关键词： 耦合量子点分子桥 非平衡格林函数 量子输运     

固定距离下空气湿度对光透过功率影响的研究

测量两层玻璃间固定厚度的纯净雾气湿度对光穿透能力的影响,采用自然光及激光光源不同光源进行实验,参考对照并得出了透过光功率随湿度的变化曲线,进一步体现湿度对光功率的影响.     

量子力学双语教学研究

从量子力学的教学实践出发,从双语教材的选择、教学方法与手段、考试与考核三个方面讨论了量子力学课程进行双语教学应当注意的问题.     

Optoelectronic characterisation of an individual ZnO nanowire in contact with a micro-grid template

Optoelectronic characterisation of an individual ZnO nanowire in contact with a micro-grid template has been studied.The low-cost micro-grid template made by photolithography is used to fabricate the ohmic contact metal electrodes.The current increases linearly with the bias,indicating good ohmic contacts between the nanowire and the electrodes.The resistivity of the ZnO nanowire is calculated to be 3.8 ·cm.We investigate the photoresponses of an individual ZnO nanowire under different light illumination using light emitting diodes(λ = 505 nm,460 nm,375 nm) as excitation sources in atmosphere.When individual ZnO nanowire is exposured to different light irradiation,we find that it is extremely sensitive to UV illumination;the conductance is much larger upon UV illumination than that in the dark at room temperature.This phenomenon may be related to the surface oxygen molecule adsorbtion,which indicates their potential application to the optoelectronic switching device.