Taipei, Taiwan R.O.C, Dec 2005 to Mar 2008 to work as a Post-doctoral fellow

Newcastle, United Kingdom, Apr 2008 to Dec 2010 to work as a Post-doctoral fellow

Fraunhofer ICT, Pfinztal, Germany, Dec 2008 to present in International Energy Association

Annex XVI, Fall Workshop Meeting.

KTH Royal Institute of Technology, Stockholm, Sweden, March 2009 to present in

European Cost Action Project-543 meeting.