1987∼1988 State University of New York at Stony Brook, Materials Science & Eng. Visiting Lecturer
1988∼1989 University of Cambridge - England, Cavendish Laboratory Research Fellow
1989∼1990 Oak Ridge National Laboratory Research Fellow, U.S. Dept. of Energy, Metals Y Ceramics Div.
1990∼1993 Oak Ridge National Laboratory and University of TennesseeResearch Associate Professor, Metals and Ceramics Div
1993∼1995 National Institute of Standards and Technology
2001∼ Georgia Institute of Tech., School of Chemistry and Biochemistry Ajunct Professor
∙(2000–2005) Director, Center for Nanoscience and Nanotechnology
∙(1998–2015) Director, Center for Nanostructure Characterization
2010∼ Georgia Institute of Tech., School of Materials Science and Engineering The Hightower Chair in Materials Science and Engineering
∙2006-2010 Engineering Distinguished Professor
∙2004-present Regents' Professor
∙1999-2004 Full Professor,
∙1995-1999 Associate Professor
2011∼ Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences Founding director and Director
2011∼ Georgia Institute of Tech., School of Electrical and Computer Engineering Ajunct Professor
2014∼ CEO, TiSES LLC.
2016∼ Chairman of the board, Nair TENG Inc.
2017∼ Dean, College of Nanoscience and Technology, University of Chinese Academy of Sciences

2018 Elected as academician of Academia Sinica
中央研究院院士（台湾）
2017 Global Nanoenergy Prize, The NANOSMAT Society, UK.