Recently, a research paper of the CAMP-Nano of the national key laboratory of XJTU Metal Material Strength Laboratory Dr.Wang Chengcai was published on line on American PNAS (Proceedings of the National Academy of Sciences). The website is: http://www.pnas.org/content/early/2013/11/19/1320235110. A graduate student Mao Yunwei, professor Shan Zhiwei, professor Ma En, Professor Li Ju and professor Sun Jun from CAMP-Nano, Dr. Dao Ming from American MIT and Professor Subra Suresh from American Carnegie Mellon University participated in the work.