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.

	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	Golberg D., Bai X.D., Mitome M., Tang C.C., Zhi C.Y., Bando Y. “Structural peculiarities ofin-situdeformation of an individual boron nitride nanotube inside a high-resolution transmission electron microscope”,Acta Mater.55, 1293-1298, (2007). Bai X.D., Golberg D., Bando Y., Zhi C.Y., Tang C.C., Mitome M., Kurashima K. “Deformation-driven electrical transport of individual boron nitride nanotubes”,Nano Lett7(3), 632-637 (2007). Terrones M., Romo-Herrera J.M., Cruz-Silva E., Lopez-Uriaz F., Munoz-Sandoval E., Velazquez-Salazar J.J., Terrones H., Bando Y., Golberg D. “Pure and doped boron nitride nanotubes”,Materials Today, 10(5), 30-38 (2007). Kuroda S., Nishizawa N., Takita K., Mitome M., Bando Y., Osuch K., Dietl T. "Origin and control of high-temperature ferromagnetism in semiconductors",Nature Mater. 6 (6), 440-446 (2007). Fang X.S., Bando Y., Ye C.H., Shen G.Z., Gautam U.K., Hu J.Q., Tang C.C., Golberg D. “Si nanowire semisphere-like ensembles as field emitters”,Chem. Commun.40(2007) 4093-4095. (JournalCover paper) Hu JQ, Bando Y, Zhan JH, Zhi CY, Golberg D, “Carbon nanotubes as nanoreactors for fabrication of single-crystalline Mg3N2nanowires”,Nano Lett.6(2006) 1136-1140. Ye CH, Bando Y, Shen GZ, Golberg D, “Formation of crystalline SrAl2O4nanotubes by a roll-up and post-annealing approach“, Angew. Chem. Int. Edit.45(2006) 4922-4926. Tang CC, Bando Y, Huang Y, Yue S, Gu C, Xu FF, Golberg D, “Fluoridation and electrical conductivity of BN nanotubes”,J. Am. Chem. Soc.127(2005) 6552-6553. Zhi CY, Bando Y, Tang CC, Honda S, Sato K, Kuwahara H, Golberg D, “Mechanical properties of boron nitride nanotubes/polyaniline composites”,Angew. Chem. Int. Edit.44(2005) 7929-7932. Liu ZW, Bando Y, Mitome M, Zhan JH, “Unusual freezing and melting of gallium encapsulated in carbon nanotubes”,Phys. Rev. Lett.93(2004) 095504.1-095504.4. Kishi T, Bando Y, “Status and trends of nanotechnology R&D in Japan”,Nature Mater.3(2004) 129-131. Hu JQ, Bando Y, Liu ZW, Sekiguchi T, Golberg D, Zhan JH, ”Epitaxial heterostructures: Side-to-side Si-ZnS, Si-ZnSe biaxial nanowires, and sandwich like ZnS-Si-ZnS triaxial nanowires”,J. Am. Chem. Soc.125, (2003) 11306-11313. (JournalCover paper) Gao YH, Bando Y, “Carbon nanothermometer containing gallium”,Nature,415(2002) 599. 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.