This acknowledgement is to the people who contributed to 2006 Zhejiang University-UCLA Summer Student Research Program by providing their invaluable time. We feel so fortunate for receiving so much of their help.

We would first like to express our deepest gratitude to Dr. Ren Sun. Dr Sun provided students from Zhejiang University with a precious opportunity to participate in the research at UCLA, to interact with the mentors and students at UCLA, and also to enjoy the good weather of Los Angeles .

All the mentors who allowed us to work in their labs also deserve our greatest appreciation. These individuals are Profs. Ren Sun，Yibin Wang， Chang-Jin Kim , Ben Wu, Kang.L Wang，Hsien-Rong Tseng， Chih-Ming Ho， Samson Chow， Jeff Shamma， Jian Yu Rao， Anna Wu， John Miao， Lily Wu， Otto Martinez-Maza， Daniel Silverman， Harvey Herschman， Zuo-Feng Zhang， Arion Hadjioannou， Henry Huang， Yongho Ju ， YongChen, Desmond Smith。

In addition, we would like to extend a warm thank you to Joyce Wu, Fang Fang Xing, Nancy Su and Mita Rahman.. They made the process of this summer program smooth and took good care of us during this period. We are thankful to the people in the medical and engineering labs, as all of them are very friendly and warm-hearted.

Furthermore, we are extremely grateful for all of our friends in the Co-ops for offering us daily life suggestions during our stay in California, as well as all others at either UCLA or Zhejiang University whose direct or indirect assistance made this summer program successful and wonderful.