About: http://webisa.webdatacommons.org/451103193

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	Each of the walls 32 is composed of a piezoelectric material such as PZT as an electromechanical conversion means.
http://www.w3.org/ns/prov#wasQuotedFrom	freshpatents.com