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2021. 01 ~ 2021.12
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2019. 01 ~ 2021.02
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2018. 01 ~ 2021.12
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2019. 01 ~ 2019. 12
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2009. 08 ~ 2010. 02
AIST (Advanced Industrial Science and Technology) °´¿ø ¿¬±¸¿ø
1995. 07 ~ 2002. 05
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1994. 06 ~ 1995. 07
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1993. 05 ~ 1994. 05
The University Arizona, ÈÇаú(USA) Postdoctor ¿¬±¸¿ø