Dr. Jan-Kai Chang obtained a PhD degree from Nanyang Technological University in electrical engineering. Dr. Chang has over 10 years experience in bioelectronics technology, ranging from bioresorbable semiconductors to implantable transient electronics to wearable electronic systems. He has published over 13 peer-reviewed papers with the Wearifi team and is listed as an inventor on wearable technologies for skin health care including hydration, TEWL and UV sensors. His publications have appeared in prestigious journals such as PNAS, Nature Electronics, and Nature Biomedical Engineering. Dr. Chang is co-founder and CTO of Wearifi Inc, a spinout startup pursuing commercialization of wearable skincare technologies.