SEMINAR
Inorganic Materials Analysis and Testing Center
Inorganic Coating Materials Research Center
State Key Laboratory of High Performance Ceramics and Superfine Microstructure
无机材料分析测试中心
特种无机涂层研究中心
国家重点实验室
Novel Inorganic Nanotubes and Nanowires
Speaker:
Prof. Yoshio BANDO
NIMS Fellow
Director-General of World Premier International Center for Materials Nanoarchitectonics (MANA),
National Institute for Materials Science (NIMS), Tsukuba, Japan
时间:2008年11月10日 (星期一)10:00-11:00
地点:四号楼十四楼第二会议室
联系人:许钫钫 祝迎春
欢迎广大科研人员和研究生参与讨论!
Abstract
Novel inorganic nanotubes made of boron nitride, silica, magnesium and zinc oxides, and so forth, have attracted significant attention in recent years. In this work, we fully take an advantage of the state-of-the-art high-resolution transmission electron microscopy (HRTEM) for the detailed analysis of atomic and electronic structures of these novel nanotubes, and dedicated STM-TEM and AFM-TEM piezo-driven holders for pioneering physical property measurements. A special emphasis is put on the world-first analysis of electromechanical response of individual multi-walled BNNTs. Recent theoretical works have predicted the possibility of deformation-driven band-gap tuning and piezoelectricity in BNNTs, however, these intriguing findings have never been verified experimentally before the present work. Herein, we indeed demonstrate the striking effects of tensile, compressive and bending deformation on the electrical response of BNNTs under manipulation and electrical probing in HRTEM. These effects, in fact, include but are not limited to piezoelectricity in deformed BNNTs. In addition, BNNT bending forces are directly measured inside HRTEM and real-time video-recording of elastic kinking deformation (that reveals a superb BNNT flexibility) is performed.
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Name |
Yoshio Bando |
Affiliation |
National Institute of Materials Science (NIMS) | |
Position |
NIMS Fellow, Director-General, International Center for Young Scientists (ICYS-MANA), NIMS Chief Operating Office (COO), WPI Center for Materials Nanoarchitechtonics (MANA), NIMS | |
Education |
1975 Ph.D, Doctor of Science, Completed doctoral course in Dept. of Science, Graduate School, Osaka University | |
Experience |
1975-1981 Researcher at National Institute for Research in Inorganic Materials (NIRIM) 1979-1981 Visiting Scientist, Arizona State University, USA 1981-1986 Senior Researcher at National Institute for Research in Inorganic Materials (NIRIM) 1993-Now Professor of the Institute of Materials Science, University of Tsukuba 2001-2001 Director of Advanced Beam Analysis Group, Advanced Materials Laboratory (AML), National Institute of Materials Science (NIMS) 2001-2003 Director of the Integrated Strategy Office at National Institute of Materials Science (NIMS) 2003-Now Director-General, International Center for Young Scientists (ICYS), NIMS 2004-Now NIMS Fellow 2007-Now Chief Operating Office (COO), WPI Center for Materials Nanoarchitechtonics (MANA), NIMS 2008- Now Professor, Waseda (早稻田)University | |
Honors & Awards |
2002 “top thirty key persons in nanotechnology” in Japan 2004 NIMS Fellow 2004 Academician of the World Academy of Ceramics 2005 Tsukuba Award (诺奖获得者Ezaki(江崎玲於奈)为评审主席) 2008 American Ceramics Society Fellow | |
Main Scientific Publication |
He has published more than 400 papers in international journals and the total number of citations of his papers is 8,669 (as of October, 2008). He also holds more than 50 patents. |