Noh conducted postdoctoral research in Dr. Albert John Sievers' group at Cornell University[5][6] until 1989.

[8] With funding from the Institute for Basic Science, he established the Center for Correlated Electron Systems at Seoul National University in 2012.

The research center searches for new emerging phenomena at the interfaces of strongly correlated electron systems, such as oxides.

His research has focused on transition metal oxides but has extended to other strongly correlated electron systems.

He also discovered a novel quantum state of the correlated electron system in iridates that has attracted the interest of many researchers.

He served as a council member trustee of the Association of Asia and Pacific Physical Societies from 2011 - 2013,[11] is on the board of trustees at the Asia Pacific Center for Theoretical Physics,[12] and the International Advisory Board of the Asian Meeting on Ferroelectricity.

He has also delivered plenary talks at international conferences, including IMF-11 (2005, Brazil), JKC-FE6 (2006, Japan), AAPC-11 (2010, China), KPS (2011, Busan), and AMEC (2012, Malaysia).