Wei He (Carl) was a visiting PhD student from the Max Planck Institute for Polymer Research in Mainz, Germany. His work is focused on the nanoencapsulation and controlled-release of peptide drugs from nanocapsules, nanogels, and nanofibers. He prepared multifunctional microcapsules during his Master study in University of Manitoba, Winnipeg, Canada. Before that, he studied polymer material science as a Bachelor student in Donghua University, Shanghai, China. He was working in VISTEC on the development of new methods for the recovery and re-dispersion of nanoparticles prepared in miniemulsion. Carl stayed in May and June 2018 in our group.