Mufei Xiao received his BS in Physics from Fudan University China on 1981, and his PhD in Physics from Aalborg University, Denmark on 1994. He is currently a professor at the Centro de Nanociencias y Nanotecnolog�a, Universidad Nacional Aut�noma de M�xico, Ensenada, Baja California, M�xico. He has published more than 120 journal papers, mostly in near-field optics