[7] In 2002, he worked as a physicist postdoctoral fellow in the Materials Sciences Division of the Lawrence Berkeley National Laboratory[8] and then as a staff scientist from 2006.

While researching at KAIST, he joined the Institute for Basic Science (IBS) Center for Nanomaterials and Chemical Reaction[9] as a group leader in 2013 and then became associate director in 2016.

A collaboration between KAIST's Department of Chemistry and IBS, Park conducts research at Surface science and Catalysis with Atomic Level Engineering Laboratory, also known as SCALE Lab.

[citation needed] There are four primary research topics at SCALE Lab; surface chemistry, nanocatalysis, hot electron, and scanning probe microscopy.

Atomic force microscopy has permitted the investigation of nanomechanical, structural properties, and charge transport.