SU(2)纯格点规范场热力学非对称点阵Monte-Carlo模拟

在非对称点阵(ξ=2,3)上模拟了SU(2)纯格点规范场系统的热力学行为,结果表明,非对称点阵Monte-Carlo模拟是实现快速趋向连续物理极限的有效途径.     

Low Resistivity C54 Phase TiSi2 Films Synthesized by a Novel Two—Step Method

Synthesis and growth properties of the TiSi2 film on a Si (001) substrate are investigated. A novel two-step method is used for deposition of the C54 phase TiSi2 film with low resistivity. The first step is the formation ofthe C49 phase TiSi2 at a relative low substrate temperature of 400℃, followed by rapid thermal annealing processat 850℃ in N2 for the formation of the C54 phase TiSi2 as the second step. Finally, selective wet, etching isemployed to remove the un-reaction Ti on the surface and the low resistivity C54 TiSi2 film can be obtained. Thefilms deposited under various parameters are evaluated by scanning electron microscopy, x-ray diffraction and the resistivity measurement. Compared with other sputtering technologies used commonly for TiSi2 synthesis,this two-step method has apparent advantages such as the mild synthesis temperature and the high purity of the final product with low resistivity, uniform large area and improving surface roughness. In addition, the film also shows that the low coefficient of resistivity-temperature appears in the temperature range from 20℃to 800℃.     

平面调和函数的充要的边界积分方程

本文发现,以往习用的平面调和函数的两种边界积分方程不是充要的,其原因是一个实际上并不能包括全部调和函数的边界积分表达式误解为能如此.本文改正了这个表达式,并进而导出了充要的直接变量和间接变量的边界积分方程     

Ti：LiNbO3二维渐变折射率光波导传播常数的计算

从Ｔｉ：ＬｉＮｂＯ３波导截面折射率分布的特点出发，得出一套计算传播常数简单而精确的方法，文中对该法进行了分析，并应用该方法计算了钛扩散波导的色散关系，该方法为钛扩散光波导集成光学器件的设计提供了一种较可靠的理论手段。     

光谱电化学技术及其应用

一、引言单纯的电化学测量技术仅能获得电极/溶液界面结构和反应历程的间接信息,近三十年来发展起来的光谱电化学技术可在电化学过程发生的同时对电极/溶液界面的结构和过程进行光谱现场观察,从而为在分子水平认识这些问题提供直接依据。光谱技术和电化学方法的密切结合有许多优点。电化学方法具有可控制体系的物质状态、能定量产生反应物种等优点。而光谱技术则在鉴     

丝蛋白分子的红外光谱研究

本文记录并研究了桑蚕丝、柞蚕丝、天蚕丝和天柞杂交蚕丝等几类共42种蚕丝样品的红外光谱,确定了柞丝类和桑丝类两大类蚕丝样品在红外光谱方面的差别。从而为鉴别蚕丝样品的种类建立起一种简便易行的方法。通过对各类样品的红外光谱数据处理,计算了某些谱带的相对强度比,获得了一些半定量的规律性结果。     

关于等价电子组态波函数与Young盘间变换性质的讨论

指出了等价电子组态波函数与Young盘间变换性质是幺正的，而不是厄米幺正的.指出了一个谱项波函数的符号错误. 关键词： 群论 量子力学     

曲线坐标系中相对论性动量分量的算符中会出现Σ_z项吗

指出相对论性动量算符p^在任何坐标系中的分量 ,包括在曲线坐标系中的分量也是动量分量的算符 ,不可能出现与自旋矩阵有关的项 .指出了电子自旋是轨道角动量的相对论效应的观点没有理论根据 .     

K0-group Transmissibilities of the Tracial Limit of C^＊-algebras

We introduce the tracial limit A = (t4) limn→n∞ (An,pn) and show that if K0(An) has ordered relation, K0(A) has ordered relation naturally. In the case that A is simple and K0(An) is weakly unperforated for every n, K0(A) is weakly unperforated too. Furthermore, the Riesz interpolation property of K0(An) can be transmitted to K0(A).