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5月23日学术报告

来源： 发布时间：2017-05-23【字体：大 中 小】

　　题目：Femtosecond laser-induced subwavelength periodic surface structures

　　姓名：Prof.Takayoshi Kobayashi

　　时间：2017年5月23日（周二） 下午2:00

　　地点：溢智厅

　

   单位：Advanced Ultrafast Laser Research Center, University of Electro-Communications, Japan

　 　 Advanced Ultrafast Laser Center, Chio Tung University (NCTU), Taiwan, China

　 职位：Cahir professor of National Chiao-Tung University,

　 　  Professor of The University of Electro-Communications,

　  　 Guess Professor of Osaka University, Professor Emeritus of The University of Tokyo

　 内容：Since the introduction of femtosecond (fs) laser amplifiers, nanoscale microstructures on the surfaces of materials have been demonstrated by irradiating the surfaces with femtosecond pulses. This has attracted a great deal of attention because periodic structures such as nanoripples, nanoparticles, nanocones, and nanospikes can be inscribed on almost any material directly and without any masks and chemical photoresists to relieve environmental concerns. For instance, have been induced by single-beam femtosecond laser pulses in various materials. Nowadays, the interference between the surface electromagnetic wave (surface plasmons) and the incident light has been widely accepted to explain the femtosecond laser-induced subwavelength periodic surface structures (LIPSSs). In the presentation the mechanism of the structural formation is clarified for the SEM image analysis of fs laser exposed high-Tc material YBCO.

　　

　　

　　

　　

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