His current research interests are Bio Inspired IC Design, Network on a Chip, Multimedia SoC design, Wearable Healthcare Systems, and high speed and low power memory. He has published more than 250 papers, and wrote or edited 5 books, “DRAM Design”(1997, Hongneung), “High Performance DRAM”(1999 Hongneung), “Low Power NoC for High Performance SoC Design”(2008, CRC), “Mobile 3D Graphics SoC”(2010, Wiley), and “BioMedical CMOS ICs”(Co-editing with Chris Van Hoof, 2010, Springer), and many chapters of books.