本栏目只有登录用户才能查看!
用户名:
密  码:
加入收藏 | 实验室安全
网站首页
实验室概况
组织结构
动态信息
科学研究
人才队伍
学术交流
开放课题
MOI简报
仪器设备
动态信息
实验室信息
学术动态
学术动态 当前位置:首页 > 动态信息 > 学术动态
 

关于休斯顿大学Jiming Bao副教授学术报告的通知

发布时间:2018-05-26   来源:
报告题目:Interaction of light with nanostructures suspended in liquid: from thermal lens effect to photoacoustic laser streaming
报告人:休斯顿大学Jiming Bao副教授
时间:5月28日上午10:00-11:00
地点:教三-440

Abstract: Due to the ease of synthesis and handling, nanomaterials are often dispersed in transparent solvents to study their interaction with light. Nonlinear optical phenomena such as saturable absorption and self-phase modulation are observed in many nanomaterial dispersions, and are often ascribed to their intrinsic nonlinear optical properties. In this talk, I want to point out that the effects of solvents cannot be overlooked, in most cases, solvents can introduce unintended consequences. I will show you two cases to illustrate this point. In the first case, concentric diffraction ring patterns are observed when a laser beam passes through a graphene dispersion. This phenomenon was explained as a manifestation of a large third-order nonlinear effect of graphene. I will argue that such diffraction ring is actually caused by the thermal lens effect of the solvent and I will show you how to distinguish it from the intrinsic nonlinear self-phase modulation. In the second example, while looking for similar ring pattern in Au nanoparticle suspension, we discovered a completely new phenomenon: photoacoustic laser streaming. The laser beam drives the water with such a large force that a water jet is created. This is a new optofluidics principle that combines photoacoustics with acoustic streaming.

BiographyDr. Bao is an associate professor of Electrical and Computer engineering at the University of Houston. He graduated from Zhejiang University with B.S. and M.S. in physics in 1992 and 1995, respectively. He obtained his Ph.D. in applied physics in 2003 from the University of Michigan, he then did post-doctoral research at Harvard University before joining the University of Houston in 2008 as an assistant professor. His current research covers many interdisciplinary topics ranging from solar energy conversion to fiber optic sensing.
More information can be found from Dr. Bao’s group website at http://nano.ee.uh.edu/.
 
【返回】
上一篇:关于美国科罗拉多州立大学名誉教授Chiao-Yao(Joe)She学术报告的通知
下一篇:关于希伯来大学Uriel Levy教授学术报告的通知
 
版权所有 浙江大学现代光学仪器国家重点实验室 浙ICP备07500376号
技术支持:蒙特信息·让您方便构建品质网站
仪器设备预约 | 办公系统 | 短信平台 | 论文投稿 | 文件下载| 管理员登录
色久久综合网,五月婷婷开心中文字幕