范德华作用依赖的微纳系统力学行为  

Mechanical behaviors of micro-nano systems associated with van der Waals interaction

作　　者：秦文 寇泽普 刘小飞[1] 张助华[1] QIN Wen;KOU Zepu;LIU Xiaofei;ZHANG Zhuhua(State Key Laboratory of Mechanics and Control for Aerospace Structures,Institute for Frontier Science,Nanjing University of Aeronautics and Astronautics,Nanjing 210016)

机构地区：[1]南京航空航天大学航空航天结构力学及控制全国重点实验室,国际前沿科学研究院,南京210016

出　　处：《力学进展》2024年第4期739-770,共32页Advances in Mechanics

基　　金：国家自然科学基金(12072152,12225205)资助项目.

摘　　要：起源于量子和热力学涨落的范德华作用在自然界和人造系统中无处不在.准确描述范德华作用对认识微纳材料及系统的力学行为及其精准设计尤为关键.本文综述了依赖范德华作用的微纳尺度力学行为方面的最新研究进展.首先,简要介绍了适用于原子与分子体系的范德华理论,如对势近似法、非局域范德华泛函、绝热连接涨落耗散定理和多体色散方法等,以及适用于连续介质体系的解析、半解析和数值Lifshitz理论等描述方法;其次,梳理了范德华作用对二维材料、微纳机电系统等体系典型力学行为的影响;接着讨论了范德华斥力、非单调范德华势阱、范德华扭转力矩、范德华翻转力矩、范德华屏蔽等新颖效应;最后总结了范德华理论当前的局限和所面临的挑战,并展望了未来的发展趋势.van der Waals(vdW)interactions originating from quantum and thermal fluctuations are ubiquitous in natural and artificial systems.Accurate descriptions and characterizations of vdW interactions are crucial to understanding the mechanical behavior and realizing the mechanical design of micro-/nano-systems.This review summarized recent research progresses on vdW-dependent mechanical behaviors of micro-/nano-systems.First,we introduced vdW theories for atomic and molecular systems,including pairwise approximation,nonlocal density functional theory,adiabatic-connection fluctuating-dissipation theorem and many-body dispersion theory,as well as theories for continuum systems,including analytic,semi-analytic and numerical Lifshitz theory.Then,we reviewed the effects of vdW interactions on typical mechanical behaviors of two-dimensional materials and nano-and micro-electromechanical systems.We also discussed fascinating effects emerged from vdW interaction,including repulsive vdW force,non-monotonic vdW trap,Casimir rotational torque,Casimir flipping torque and vdW screening.Finally,we analyzed limitations of current vdW theories and presented the outlook for future development.

关 键 词：范德华作用 量子效应 微机电系统 二维材料 力学行为 

分 类 号：O369[理学—流体力学]