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(Seminar) Contributions of repulsive and attractive interactions to orientational order in liquid crystals
2018-07-31  【 】【打印】【关闭

CAS Key Laboratory of Theoretical Physics

Institute of Theoretical Physics

 Chinese Academy of Sciences

Seminar

Title

题目

Contributions of repulsive and attractive interactions to orientational order in liquid crystals

Speaker

报告人

Prof. Peter Palffy-Muhoray

Affiliation

所在单位

Liquid Crystal Institute, Kent State University

Date

日期

2018年7月31日(周二)16:00

Venue

地点

Conference Room 322, ITP main building

Abstract

摘要

Both repulsive and attractive molecular interactions can give rise to orientational order. Using a density functional approach we have examined the relative contributions of these two interactions to nematic order in the high density regime. We find that in the purely steric case, the orientational probability distribution exhibits a unique feature: it has compact support in configuration space.  In the presence of attractive interactions, the behavior changes, and at a critical interaction strength, Maier-Saupe type thermotropic behavior is regained.  The value of the order parameter at the NI transition may indicate the relative contributions of repulsive and attractive interactions.

Contact person

所内联系人

Zhongcan OuYang

 

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