Photobiology, medical device innovation, flexible electronics, wearable sensors, digital medicine, and medical innovation.

As a physician-engineer, Dr. Xu is interested in the translation of breakthrough electrical engineering, materials science, and health information technology towards addressing major unmet clinical needs. As Medical Director of the Center of Bio-Integrated Electronics, he has expertise within flexible device platforms, specifically phototherapy systems, addressing a wide range of dermatological and non-dermatological clinical needs. Previously, he has developed several medical device technologies across multiple medical fields including dermatology, orthopedics, cardiology and patient non-adherence that have raised competitive funding from government grants and private investors. As a health economist, his work focuses on the role of FDA regulation on medical device innovation and the development of policies that facilitate breakthrough innovation in healthcare. More recently, he has developed an interest in social media, cosmetics, and consumer healthcare. This work, naturally, has direct relevance to the public with his publications garnering press coverage from sources such as The New York Times, CNN, The Washington Post, and The Los Angeles Times.

General dermatology.