2003: Singapore; Paper presentation in ICMAT-IUMRS meeting, Singapore

2004: Australia; Paper presentation in 7th World Biomaterials Congress, Sydney

2005: USA; Paper presentation in Annual meeting American Ceramics Society, Maryland

2006-2012: Japan; Worked as post-doctoral researcher

2007: France; Paper presentation in Bioceramics 23, Nantes

2009: Hongkong; Asian biomaterials conference

2009: South Korea; Paper presentation in Bioceramics 24, Busan