<http://webisa.webdatacommons.org/52419478>	<http://www.w3.org/ns/prov#value>	"They can even force the metamaterial to do things impossible with natural materials, such as switching between a positive and a negative refractive index to flip the direction in which a light beam bends when passing through the material" .
<http://webisa.webdatacommons.org/52419478>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/298602640>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/52419478> .
<http://webisa.webdatacommons.org/52419478>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<nextbigfuture.com> .