报告题目： Acoustic tractor beams and sonic screw drivers

报告人：Likun Zhang （张黎昆）

National Center for Physical Acoustics, University of Mississippi

报告时间： 2017年1月4日 下午4：30-5：30

报告地点：物理科学与技术学院，新楼5楼多功能报告厅

Abstract: Acoustic beams, analogous to optical beams, can transfer their linear momentum and/or angular momentum to illuminated objects, and hence exert radiation forces and/or torques on the objects. This talk will present some recent advances of analyses and calculations on negative radiation forces by non-diffracting beams, angular momentum transport of vortex beams, and associated radiation torques on objects. The experimental realization of these beams allow diverse applications especially for the manipulation of microparticles with acoustic beams of traveling waves, such as pulling or rotating the particles with the innovative concepts of acoustic tractor beams or sonic screw drivers.

个人简介

张黎昆于2012年获得华盛顿州立大学物理学博士学位。结合实验、计算、和理论的手段从事声学和流体动力学的跨学科研究，研究领域包括物理声学、海洋声学、和物理海洋学。目前是美国国家物理声学中心/密西西比大学的助理教授、美国声学学会学报(JASA)副主编、美国声学学会物理声学技术委员会委员。

邀请人：邱春印副教授