@article {1314999, title = {Charging of Multiple Interacting Particles by Contact Electrification}, journal = {J. Amer. Chem. Soc.}, volume = {136}, year = {2014}, note = {1228}, month = {7/7/2014}, pages = {13348-13354}, keywords = {charge diffusion, contact electrification, contact de-electrification, electrostatic discharge, interacting particles}, author = {Soh, S. and Liu, H. and Cademartiri, R. and Yoon, H. J. and Whitesides, G. M.} }