右墨炉原子化器中铅的原子化机理

本文用时间分辨技术研究了石墨炉原子化器中铅的原子化机理,证实了氧化铅在石墨管表面被碳还原成金属铅这一反应过程。     

Nonequilibrium free energy and information flow of a double quantum-dot system with Coulomb coupling

We build a double quantum-dot system with Coulomb coupling and aim at studying connections among the entropy production, free energy, and information flow. By utilizing concepts in stochastic thermodynamics and graph theory analysis, Clausius and nonequilibrium free energy inequalities are built to interpret local second law of thermodynamics for subsystems. A fundamental set of cycle fluxes and affinities is identified to decompose two inequalities by using Schnakenberg's network theory. Results show that the thermodynamic irreversibility has energy-related and information-related contributions. A global cycle associated with the feedback-induced information flow would pump electrons against the bias voltage, which implements a Maxwell demon.     

最小距离分裂算法在NURBS曲面间的改进

基于分裂算法中最小距离在NURBS曲面间的应用研究,提出了以包围体来代替包围盒(AABB)的思想,在求凸包间距离时选取了GJK算法,并对分裂算法进行了改进,从而在算法精度以及算法速度方面实现了极大地提高.     

新型能量转换微器件的热力学特性及研究进展

热光伏电池、热离子器件和热辐射电池等新型热电转换微器件,为新能源的开发应用和余、废热回收利用提供了有效途径.这些固态能量转换器件工作在两个温度不同的热源之间,以物理方式将热能部分转换为电能,具有高功率密度和高转换效率的特点.在微纳尺度下,器件中的电子输运和热流输运呈现出与宏观尺度不同的独特效应,如空间电荷积累、量子隧穿...