报告题目：Chirality effects in Casimir-Lifshitz torque for birefringent multilayer systems

报 告 人：Rudolf Podgornik

报告时间：8月17日（周四）10:00-12:00

报告地点：理科楼连廊学术报告厅

报告摘要：Casimir-Lifshitz interactions are macroscopic dispersion forces that arise from quantum mechanical and thermal fluctuations of the electromagnetic field. The name “dispersion forces” originates from the fact that their properties are governed by the dielectric and magnetic dispersion of the interacting materials. Casimir-Lifshitz forces share the same physical origin as the van der Waals-London forces, which conventionally denote the interaction in cases where retardation effects are negligible. The presence of anisotropies, either in the susceptibilities or the morphological anisotropy induced by the shape of the interacting bodies, implies the existence of not only forces but also Casimir-Lifshitz torques between the interacting bodies. I will describe recent results to analyze the Casimir-Lifshitz forces and torques between two semi-infinite and/or finite homochiral or heterochiral layers and thus quantify macroscopically the effects of chirality.

Casimir-Lifshitz相互作用是由于电磁场的量子力学和热涨落而产生的宏观色散力。其名称“色散力”源于它们的性质受到相互作用材料的介电常数和磁化率的影响。Casimir-Lifshitz力与范德华力-伦敦力具有相同的物理起源，后者通常用于在迟滞效应可以忽略情况下描述相互作用。如果相互作用材料具有各向异性，不论是介电常数还是形态各向异性都会导致相互作用体之间不仅存在力，还有Casimir-Lifshitz力矩。本报告将描述我们最近的研究结果，分析两个半无限或有限的同手性或异手性层之间的Casimir-Lifshitz力和力矩，从而宏观地量化手性效应。

报告人简介：Rudolf Podgornik，斯洛文尼亚籍，中国科学院大学外籍教授，国家特聘外国专家。主要研究方向为软物质物理，包括：生物材料的范德瓦尔斯力和Casimir效应、DNA和病毒的物理问题等。现承担国家自然科学基金重点项目1项，在Reviews of Modern Physics、 Physical Review Letters等物理类顶级期刊发表SCI论文400余篇，引用次数超过10000次。

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