报告时间：2017年4月24日，星期一，下午3:00-4:00

　　报告地点：能源基础楼 一楼会议室

　　报告人：云文兵 博士

　　美国SIGRAY公司

　　报告摘要：

　　传统电子束轰击金属靶形式的实验室X射线源，受限于金属靶的热传递和X射线产生效率低等问题，自X光管发明以来其X射线亮度和总通量一直裹足不前。大量的X射线分析工作只能在同步辐射装置上完成。而同步辐射装置的建设投资巨大，线站的机时资源非常有限。

　　云文兵博士等发明的微米结构阵列X射线源将微米尺度的阳极靶材镶嵌在金刚石基体上，通过金刚石优异的传热性能，实现电子束能量密度的巨大提高。配合新型的X射线反射镜光学器件，在样品区获得比旋转阳极X光管提高2~3个数量级的X射线通量和亮度。

　　基于这种革命性的微结构阵列X射线源，已经开发研制出新型的XRF、EXAFS和亚微米、纳米分辨率的三维X射线显微镜(XRM)，性能比肩甚至优于第二代同步辐射装置上的分析能力。同时，可以为用户研制独特的X射线分析仪器提供定制的X射线源和光学器件。

　　报告人简介：

　　Dr. Wenbing Yun is a leading researcher in X-ray imaging, an innovator, a serial entrepreneur, and PI of the proposal. He was responsible for several successful X-ray imaging projects at Argonne National Laboratory (ANL) and Lawrence Berkeley National Laboratory, including design, construction, and commissioning of three beam lines at Advanced Photon Source (APS/ANL). From 2000 to July 2013, he was founder, chief technology officer, and president (to 2009) of Xradia, Inc., a private startup company specializing in novel applications of x-ray microfocusing optics and imaging systems for high-resolution nondestructive imaging, materials characterization, and medical and biomedical research. Under his leadership, the company established as a worldwide leader in supplying high performance X-ray microscopes, grown rapidly and profitably witha revenue of about $45M/year and about 100 people employment in the San Francisco bay area, and was successfully acquired in July 2013 by Carl Zeiss, a world leader in electron and optical microscopy.As a PI and co-PI, he received three prestigious R&D 100 awards for his work on development of x-ray microscopes. He has over 80 publications and co-authored a book chapter. He has forty-five issued and 25 pending provisional patents and 4 pending non-provisional patents, including several on the design of x-ray sources and optics described in this proposed project. At Xradia, Dr. Yunwas PI of six successful SBIR grant proposals(including two that have gone onto successful phase II proposals) and their subsequent commercialization in products.

　　Post Zeiss’s acquisition of Xradia in July 2013, Dr. Yun started Sigray, Inc. with a mission to develop a new generation of high brightness X-ray sources and new instruments enabled/empowered by the sources.Dr. Yun has a successful record in developing x-ray optics and both laboratory and synchrotron source based x-ray equipment.Dr. Yun is very excited about the capabilities of the high brightness x-ray illumination system to be developed in this project, and believes it has strong commercialization potential in the biomedical, materials science, and semiconductor fields. As the PI of the project, he will personally oversee all aspects of the proposed research, manage all the external services, and get involved with hands-on work when needed to make this project a success.

　　报告联系人：505组 毛佳（9307）