讲座信息丨新鲜的讲座等你来听（5月23日-5月29日）

文学院

程映虹教授学术系列讲座

讲座题目：从加勒比、北美到南非：白人社会眼中的华工形象

讲座时间：5月24日15:30-17:00

讲座地点：文学院三楼中厅会议室

主讲嘉宾：程映虹 教授

主持人：姚新勇 教授

讲座题目：异国经历与身份认同：美国黑人的东亚经历与黑人民族主义、黑人国际主义

讲座时间：5月25日15:30-17:00

讲座地点：文学院三楼中厅会议室

主讲嘉宾：程映虹 教授

主持人：姚新勇 教授

主讲嘉宾简介：

程映虹，美国特拉华州立大学历史系教授。

杨斌教授学术系列讲座

讲座题目：上座传经事已微——饶宗颐先生新加坡大学执教考

讲座时间：5月24日9:30-11:00

讲座地点：文学院三楼中厅会议室

主讲嘉宾：杨斌 教授

主持人：姚新勇 教授

讲座题目：世界史中的海贝与贝币

讲座时间：5月25日9:30-11:00

讲座地点：文学院三楼中厅会议室

主讲嘉宾：杨斌 教授

主持人：姚新勇 教授

讲座题目：学科方法论对谈：历史研究与文学研究

讲座时间：5月26日15:30-17:30

讲座地点：文学院三楼中厅会议室

对谈人：杨斌（澳门大学历史系副教授）

　　　　程映红（美国特拉华州立大学历史系教授）

主持人：姚新勇 教授

主讲嘉宾简介：

杨斌，美国东北大学历史系博士，现为澳门大学历史系副教授。曾任教于美国威廉玛丽学院、新加坡国立大学，代表作为专著《季风之北，彩云之南：云南的形成》等。

光子技术研究院

报告题目： Controlling Light with Optical Metasurface on Demand

时间：2018年5月25日（周五）10:00-11:00

地点：曾宪梓科学馆405会议室

报告人：曾铭纶博士

主持人：李向平研究员

报告摘要：

       Metasurfaces are two-dimensional photonic nanostructures composed of subwavelength resonators(called meta-atoms). The optical functionalities of metasurfaces can be tailored by designing the geometrical parameters of the unit cells. They have promised to advance photonics and optoelectronics due to their ultracompact sizes and great capabilities to control and manipulate light . In this talk, I will report my research results on applications of metasurface devices for active light manipulation and color generation. In the first part I will discuss a novel spectroscopy method called coherent control spectroscopy for actively controlling and characterizing the optical resonances of planar metasurface devices. The proposed method is based on the fact that multipole resonances of metasurfaces can be selectively enhanced or suppressed by moving it along a standing wave. By using this method, the absorption of an ultrathin metasurface device can be tuned from nearly perfect absorption to near zero. Hidden high order resonances in multilayered metasurfaces such as magnetic Fano resonance and toroidal dipole resonance can be revealed and enhanced by using the coherent control spectroscopy as well . In the second part of my talk I will discuss the applications of phase-change material Ge2Sb2Te5 for low-loss and tunable metasurface devices. Optical properties of GST can be reversibly tuned by switching its phase states. By utilizing GST nanostructures as the unit cells of the metasurface, the optical properties of the metasurfaces such as resonance wavelength, output reflection angle can be continuously tuned. It will be very useful in the applications of low loss and speedy tunable devices. Finally, I will discuss a novel metasurface device composed of Al nanoparticles that color can be continuously tuned across the visible spectrum. An Al metasurface was fabricated on a highly stretchable and transparent substrate. By stretching the substrate in either of its two dimensions, the period and therefore the scattering color can be tuned across the full visible spectrum. The proposed two-dimensional design of the metasurface enables continuous color tuning while keeping the elastic modulation to a minimum (less than 35%).

报告人简介：

      Dr. Ming Lun Tseng is currently a Postdoctoral Research Fellow in Research Center for Applied Sciences, Academia Sinica, Taipei. His research interests are investigating novel nanomaterials for tunable and nonlinear metasurfaces, and delivering metasurfaces for real-world applications. In 2008, Dr. Tseng started his research career in Prof. Din Ping Tsai’s research group at Taiwan University. During his graduate program, Dr. Tseng aimed to innovate plasmonic components and meta-structures for energy and sensing applications. In 2013, he visited Prof. Nikolay I. Zheludev's group at University of Southampton and worked on a research project called “Coherent control of meta-devices". He successfully developed a novel spectroscopy method to actively control the functionalities of planar metasurfaces. In 2014, he completed his PhD degree with the Dean’s award at Taiwan University. In 2016, he joined Dr. Naomi Halas’ research group at Rice University, USA as a postdoctoral researcher. At Rice University, he was working on tunable metasurfaces for color generation and image switching. So far, he has published 24 papers (more than 600 cited times, h-index 13), including Nano Letters, ACS Nano, Advanced Materials, Laser & Photonics Review, etc. He also serves as a reviewer of international journals such as Nano Letters, ACS Nano, Scientific Reports, and Optics Express, etc.

“强盛中国”专题系列讲座第四讲

百年暨南文化素质教育讲堂第302期

题目：龙芯，我的中国芯 ——自主CPU发展之路

时间：5月24日（周四）19：30

地点：曾宪梓科学馆国际会议厅

主讲人：胡伟武（龙芯中科技术有限公司总经理，

中科院计算所总工程师、研究员 ）

主持人：易清明 (信息科学技术学院教授）

主办：党委宣传部 文化素质教育办公室

主讲嘉宾简介：

1.经历

1968 年11 月出生于浙江永康

1991 年7 月大学毕业于中国科技大学计算机系

随后免试进入中科院计算所直接攻读博士学位, 师从著名计算机专家夏培肃院士

1996 年3月获工学博士学位，博士论文被评为全国百篇优秀论文。

2.职位

第十一届全国青联常委

第十一届全国人大代表

党的十八大、十九大代表

龙芯中科技术有限公司总经理

中科院计算所总工程师、研究员、博士生导师

3.贡献

　　2001 年起投身于龙芯处理器的研制工作。

　　先后主持完成了我国第一个通用处理器龙芯1号、第一个64位通用处理器龙芯2号、第一个四核处理器龙芯3号的研制，使我国处理器研制达到世界先进水平。

　　目前，龙芯处理器已经形成系列产品，广泛应用于军工、党政办公、工控、嵌入式等领域，为国家安全和自主信息产业发展做出了贡献。

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来源 | 各学院研会

排版 | 黎顺苗

责编 | 张天怡 彭筱航 黎顺苗