About: http://webisa.webdatacommons.org/417393299

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	An external deformation is used to press the surfaces together and slide them to create the rubbing motion.For this to work, you have to use to two different kinds of materials to create the different electrodes, Wang explained.
http://www.w3.org/ns/prov#wasQuotedFrom	nanotech-now.com