Zhiwei (Ryan) Zhang, a visiting PhD student from Xiamen University, spent two years in the Qin Lab. Ryan was born in Chuzhou, Anhui province, China. After receiving his B.S. degree in Micro-electronics from Xiamen University in 2009, Ryan has been working with Professor Zhengyun Wu on his PhD in Micro-electronics and Solid Physics at Xiamen University. He loves singing a song, playing basketball, and watching 3D movies.