Nam has published more than 120 journal papers and gives invited talks in international conferences. He served as a steering committee member of OECD Global Science Forum on Compact High-Intensity Short-Pulse Lasers (2001-2003) that eventually became ICUIL (Int. Comm. on Ultra-high Intensity Lasers) - a working group of IUPAP, and is a scientific advisory committee member of ELI - ALPS (Extreme Light Infrastructure/ Attosecond Light Pulse Source) – the EU program for the PW laser facility in Hungary started from 2011. He has served as conference chairs (ICXRL in 2010, ISUILS in 2012), organizing chairs (APLS in 2008, 2010, 2012) or program chairs (CLEO-Pacific Rim in 2007, 2009). He is on the editorial boards of
J. Phys. B as an international advisory committee member since 2007 and as a guest editor in 2012; IEEE Photonics Journal as an associate editor (from 2009 to 2011). He has represented Korea in international committees (ICQE from 2005 to 2012; CLEO-PR from 2012; Commission on Quantum Electronics of IUPAP since 2008). He has been instrumental in launching the Asian Intense Laser Network in 2004, serving as the first secretary ==Awards==