Successful PhD defense!by cbegheinin Newson Posted on November 14, 2017June 25, 2018 Congratulations to our group member Zheng Xing who successfully defended his PhD! Zheng Xing, November 2017 Zheng Xing & Caroline Beghein Zheng Xing & Lingsen Meng Group picture: Erik Weidner, Zheng Xing, Caroline Beghein, Haotian Xu (left to right)