About: http://webisa.webdatacommons.org/102431379

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	Although PVDF is preferred, any piezoelectric material such as piezoelectric ceramics or other piezoelectric polymer films can be utilized without departing from the scope of the invention.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es