About: http://webisa.webdatacommons.org/199808412

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	Nonlinear optical properties of the PBG may also be used to change the phase matching via application of either light or an electric field, or other means including electrical or chemical.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com