How-foo Chen received the M.S. degree in physics from University of Cincinnati, Ohio, in 1996. He received the Ph. D degree in the Department of Electrical Engineering at University of California, Los Angeles, in 2003. He is an associate professor of Institute of Biophotonics at National Yang Ming University, Taiwan. His research interests include biosensor, plasmonics, nonlinear optics, biomedical imaging, and nonlinear dynamics of semiconductor lasers.