The Study of Molecular Relaxation in Simple Glass-Forming Polar Liquids and Mixtures

在这个由实验物理化学资助的RUI项目中 Berberian教授（圣约瑟夫学院）将研究 形成简单玻璃的极性液体和混合物中的分子弛豫 使用介电和热容量测量。 这两种技术 相互补充，有助于理解所涉及的相互作用 有机液体混合物的组分之间，特别是 松弛过程 这些数据将有助于 解释更复杂系统的行为。 这项工作将是 在本科生助理的帮助下进行，他们将受益于 接触现代研究设备和方法。 有些分子具有微小的电偶极矩。通过解散这样的 在类似大小的电惰性物质的混合物中的分子， 形状，并使电路的解决方案的一部分，它是 可以使用电流的变化来研究一个人的周围环境是如何变化的。 分子影响其旋转运动。 这很重要，因为在 在低温下，运动变得极其缓慢， 对分子间力的理解是缺乏的。Beberian教授 这一领域的项目将导致更好的理解这一点 物质的“玻璃状”状态。

In this RUI project funded by Experimental Physical Chemistry in the Chemistry Division, Prof. Berberian (St. Joseph's College) will study molecular relaxation in simple glass-forming polar liquids and mixtures using both dielectric and heat capacity measurements. The two techniques complement each other and will help understand the interactions involved between components of mixtures of organic liquids, particularly the relaxation processes. Results of these data will contribute to explaining the behavior of more complex systems. The work is to be carried out with the aid of undergraduate assistants, who will benefit by exposure to modern research equipment and methodology. %%% Some molecules possess tiny electric dipole moments. By dissolving such molecules in mixtures of electrically inert species of similar size and shape, and making the solution part of an electric circuit, it is possible to use variations in current to study how the surroundings of a molecule influence its rotational motion. This is important because at low temperatures where the motion becomes extremely sluggish, detailed understanding of the intermolecular forces is absent. Prof. Beberian's project in this area will lead to an improved undertanding of this `glassy` state of matter.