Dr. Penkov is an associate professor a the ZJU-UIUC Institute, Zhejiang University, Zhejiang, China. He has authored numerous peer-reviewed journal articles in the field of tribology of graphene an...view moreDr. Penkov is an associate professor a the ZJU-UIUC Institute, Zhejiang University, Zhejiang, China. He has authored numerous peer-reviewed journal articles in the field of tribology of graphene and graphene-based materials.view less