Underwood Professor at Yonsei University[1] and the Founding Director of the Center for Nanomedicine, Institute for Basic Science (IBS).

[10][11] This also marked his first publication on nanocrystals[12] which is a reoccurring interest in his research career and a source of multiple highly cited articles.

From 2021, his work has notably advanced the field of magnetogenetics for wireless control of deep tissue in vivo systems, especially brain activities.

[23][24] Magnetogenetics uses mechanical torque or force of magnetic nanoparticles to manipulate neuronal activity with mechanosensitive ion channels (e.g. Piezo1), offering a non-invasive method in meter scale long-distance to control brain function.

This innovative approach allows for the precise regulation of neuronal circuits using magnetic fields, providing potential new treatments for neurological disorders and insights into brain function.