理想气体与热力学第三定律不相容

指出经典理想气体与热力学第三定律是不相容的,并作了一些讨论．     

重力场中的范德瓦耳斯气体

将地球大气近似为重力场中的范德瓦耳斯气体,在绝热过程近似下导出了大气温度、压强随高度的分布,并与理想气体近似结果进行了比较分析.     

范德瓦耳斯气体直线过程的若干讨论

首先对各种范德瓦耳斯气体在同一条确定直线过程中的温度转换点和吸放热转换点进行求解,随后绘制出温度以及吸放热特性对斜率和体积的依赖关系三维图,最终找到了影响温度和吸放热转换点的因素.     

正确理解热力学第三定律

分析了对热力学第三定律常见的错误理解,以能斯特定理为基础,通过推导得到了绝对零度不能达到的结论．     

关于热力学第三定律的能斯特思考

阐明能斯特关于热力学第三定律的思考是大胆的,也是符合逻辑的。     

满足热力学第三定律的修正的黑洞的熵公式

认为黑洞的熵正比于视界面积的熵公式S=A/4不能满足热力学第三定律,提出了新的熵公式,它既能满足热力学第三定律,又能推出黑洞的温度的表达式. 关键词： 黑洞 熵 热力学第三定律     

范德瓦耳斯气体体积修正的新计算方法

范德瓦耳斯方程能够较好地描述实际气体的热力学过程,方程中的参数b是因实际气体分子的体积而引入的修正量.本文通过考察分子之间的相互碰撞事件,计算得到了范德瓦耳斯气体体积的修正值,约等于1 mol气体所有分子体积总和的4倍,结果与其他方法得到的结果一致.这是一种新的计算思路和方法.     

范德瓦耳斯系数的理论计算

用原子间的长程色散力Pad啨近似计算范德瓦耳斯系数 ,结果比用半经典方法获得的值好     

范德瓦耳斯体系中的量子层电子学

范德瓦耳斯体系中层间耦合的存在使电子波函数扩展分布在各层上,使得空间离散的层自由度成为量子力学自由度.层自由度与电子质心自由度的耦合塑造了动量空间中非平庸的层赝自旋结构,导致丰富的量子几何性质.这些性质为晶格失配的范德瓦耳斯体系所独有,引起各种新颖的输运和光学效应,线性和非线性响应,并为多种器件应用提供新思路,成为量子层电子学研究的前沿课题.本文简要评述了这一范德瓦耳斯材料体系中的新兴研究方向,并结合量子层电子学与非线性电子学、转角电子学、手征电子学等新领域的交叉,对未来一段时间的发展进行展望.     

麦克斯韦等面积法则在范氏气体中的应用

对与范德瓦耳斯气体状态方程有关的几个问题作了进一步分析,给出了一种证明麦克斯韦等面积法则的方法,并指出了有关文献的不妥之处.     

Nonclassical behavior of the van der Waals gas

The partition function of the van der Waals gas is represented by a functional integral which is evaluated by summing the value of the integrand over its absolute and all of its secondary maxima. This leads to a one-to-one correspondence with the Ising model with nearest-neighbor interactions only. Whereas the classical behavior of the van der Waals gas is due to the absolute maximum in function space, the nonclassical behavior is shown to derive from the combined contribution of all the secondary maxima. The relation of this work to inverse range expansions and to the droplet model of condensation is discussed.     

Six-body van der Waals interactions

We report on the six-body van der Waals interactions within Rydberg atoms. Specifically, we focus on the octahedron case. The results are compared with previous calculations for two to five bodies' interactions. This research is useful for crystal structure in condensed matter physics, such as p-type doping in Silicon or other types of semiconductors. This research is also useful for studying big molecules in chemistry, chemical engineering, and other fields.     

论范德瓦尔斯a和b参数与温度的关系

范德瓦尔斯方程中a、b参数是否与温度相关,不但不同文献中的说法互不相同,而且有同一文献前后的结论相互矛盾.本文分析了这个令人迷惑的问题.在热力学中a和b参量被处理为与温度无关,它仅仅在临界点附近有效并可以把范德瓦尔斯方程表述为对应态定律;在更加广泛的温度区间a、b参量和温度有关,但是范德瓦尔斯方程却丧失了其独特性.统计...     

Thermodynamic Curvature of the Binary van der Waals Fluid

The thermodynamic Ricci curvature scalar R has been applied in a number of contexts, mostly for systems characterized by 2D thermodynamic geometries. Calculations of R in thermodynamic geometries of dimension three or greater have been very few, especially in the fluid regime. In this paper, we calculate R for two examples involving binary fluid mixtures: a binary mixture of a van der Waals (vdW) fluid with only repulsive interactions, and a binary vdW mixture with attractive interactions added. In both of these examples, we evaluate R for full 3D thermodynamic geometries. Our finding is that basic physical patterns found for R in the pure fluid are reproduced to a large extent for the binary fluid.     

Broadband laser excitation of van der Waals polymers from a cold atomic gas

In this article, we study the molecular states or polymer states excited from a broadband laser, in which case the dipole blockade will be suppressed. As expected, it is shown that more molecular states are observed through broadband laser excitations compared with narrow-band laser excitations. In addition, it is discovered that a larger energy difference, larger detuning, is required to form deeper potential wells.     

The Classical–Quantum Passage: A van der Waals Description

We undertake a van der Waals inquiry at very low temperatures so as to find signs of a classical–quantum frontier. We investigate the relation of such signs with the celebrated van der Waals gas–liquid transition. We specialize the discussion with respect to the noble gases. For such purpose, we use rather novel thermal statistical quantifiers such as the disequilibrium, the statistical complexity, and the thermal efficiency. Fruitful insights are thereby gained.     

Rotational Spectrum, Dynamics, and Bond Energy of the Oxirane···Krypton van der Waals Complex

From the free jet millimeter-wave spectra of four isotopomers of the weakly bonded oxirane···Kr complex, information on the equilibrium conformation, dynamics, and dissociation energy has been deduced. A C_s symmetry is found for the complex, with Kr lying in the σ_v plane of symmetry of oxirane. The equilibrium distance of Kr with respect to the center of mass of bare oxirane is 3.67 Å, with Kr tilted 13.6° from the perpendicular to the center of mass of the ring toward the oxygen atom. The dissociation energy is estimated, from the centrifugal distortion constant D_J, to be ca. 3.1 kJ/mol.