About: http://webisa.webdatacommons.org/110611616

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	They have been used in industrial applications for years, including in hard disk drives and loudspeakers.
http://www.w3.org/ns/prov#wasQuotedFrom	nanotech-now.com