<http://schema.org/alternativeHeadline>
"The defect won't mean much when graphene is used as conduct of electricity, but as a way to boost the strength of other materials, every imperfection matters."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/green-tech/research-innovations/stories/super-strong-graphene-has-weakness-after-all>