Invited talks at conferences & scientific meetings
| 1988 |
Invited Speaker. Workshop on Fast Chemical Processes. Tata Institute for Fundamental Research, Bombay, India. |
| 1993 |
Invited Speaker. Femtosecond Chemistry: The Berlin Conference. Freie Universitat, Berlin, Germany. |
| 1994 |
Invited Speaker, 14th International Conference on Raman Spectroscopy, Hong Kong |
| 1995 |
Invited Speaker. Symposium on Atomic & Molecular Sciences, Academia Sinica, Taipei, Taiwan. |
| 1995 |
Invited Speaker, Femtochemistry: The Lausanne Conference, Lausanne, Switzerland |
| 1997 |
Invited Speaker, 9th China National Light Scattering Conference, Lanzhou, China |
| 1998 |
Pleanary Speaker, 16th International Conference on Raman Spectroscopy, Cape Town, South Africa |
| 2000 |
Invited Speaker, 17th International COnference on Raman Spectroscopy, Beijing, China |
| 2000 |
Invited Speaker, Pacifichem 2000 Conference, Hawaii, USA |
| 2004 |
Invited Speaker, ECOMOD 2004, Environmental and Ecological Modeling 2004, Penang, Malaysia |
| 2005 |
Invited Speaker. PERCH – Postgraduate Education and Research Program in Chemistry – Congress IV. Pattaya, Thailand, 8-11 May 2005. |
| 2006 |
Keynote Speaker. 1st USM-Penang International Postgraduate Convention, Universi Sains Malaysia, 24-27 May 2006. |
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