Affiliation: | 1Department of Electrical Engineering, The Pennsylvania State University, University Park, PA 16802, USA;2State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China;3Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, PA 16802, USA;4School of Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland |