理学院数理讲坛（2018年第29-30讲）
第29讲题目：The Mystery of the Inaudible Sound
报告人：吴君汝教授
单 位：University of Vermont, United States
报告时间：2018年6月11日（星期一）14:00-15:00
报告地点：阳明学院303
报告摘要：Ultrasound is one category of sound waves, its frequency is greater than audible range (≥ 20 kHz). As a mechanical wave it does not involve any ionic radiation and it can be focused to a sub-millimeter scale into a living human being for frequency in the mega hertz range, focused Ultrasound (FUS) is widely used in imaging. In the past 20 years, it has now become a noninvasive medical modality which can be used in the cancer treatment; targeted drug delivery for Parkinson’s and Alzhemer’s diseases and many other diseases. It can also used as a technolodge to treat blast water.
报告人简介：Junru Wu is a world renowned experimental physicist, with expertise in ultrasonics, biophysics and nonlinear physics. He joined UVM in 1987 and rose through the ranks to Full Professor in 1996. He is currently Chair of the Department of Physics. He has published more than 150 papers in prominent journals as well as two major research monographs. His experimental discovery of non-propagating hydrodynamic solitons in 1984, published in the prestigious journal Physical Review Letters, was listed as one of the most important achievements in physics acoustics in Acoustical Society of America 75th Anniversary Time-Line. His invited review article "Ultrasound, cavitation bubbles and their interaction with cells" is considered one of the most influential articles in the field of targeted drug delivery. In addition to being a world-renowned scholar, Professor Wu is also a high-profile inventor. He owns or co-owns seven U.S. patents. Together with his former Ph.D. student, he also founded a high-tech company, Microgen Systems Inc. in 2007, and successfully commercialized their energy harvesting technology. He and his student both received The University of Vermont Inventors Hall of Fame Award in 2015. With decades of sustained, productive research, mentoring of students at the graduate and undergraduate levels, extensive research collaboration and funding, inventive entrepreneurship, and considerable university and professional service, Professor Junru Wu is highly deserving of this year's University Scholar Award.
第30讲题目：声空化及其效应
报告人：陈伟中教授
单 位：南京大学
报告时间：2018年6月11日（星期一）15:00-16:00
报告地点：阳明学院303
报告摘要：强超声进入液体后，液体中的溶解气体被激活，成为肉眼可见的微米级气泡，这种现象称声空化，微气泡称为空化泡。物理的和化学的实验证实，空化泡内部温度 >104 K，压力~103 atm。极端的高温高压可以产生很多物理和化学效应，以及潜在的工业、医学和生活应用。本讲座围绕声空化阐述相关的背景知识，同时介绍声空化效应及其应用。
报告人简介：陈伟中，男，1959年出生，浙江人，中共党员，理学博士。现为南京大学声科学与工程系教授、博士生导师，担任物理学院党委委员、声学支部书记、院学术委员会委员、院学位委员会委员。曾担任近代声学国家重点实验室主任和南京大学声学研究所副所长。现主持国家自然科学基金重点项目——大规模液体中的强超声传播和空化效应（11334005）和面上项目——超声空化泡内部物质成分及其演化和氩气精馏（11174145）的研究。曾参研国家九五攀登计划、主持973项目子课题——流体和颗粒物质表面孤波（G2000077302）、主持国家自然科学基金重点项目——空化泡内部极端高温高压及其物理效应（10434070）等的研究。已经培养博士、硕士研究生35名，发表学术论文70余篇，出版专著《声空化物理》一本。在非线性波动方面的研究成果获得教育部科技进步二等奖，入选2000年教育部跨世纪优秀人才培养计划，享受国务院特殊津贴。担任第七、八届江苏省科协委员；第五、六届江苏省声学学会理事长，第七届常务理事；第六、七、八届中国声学学会常务理事，第七、八、九、十次全国青年声学学术会议（CYCA）会议主席。