<http://schema.org/caption>
"Manos Tentzeris holds a sensor (left) and an ultra-broadband spiral antenna for wearable energy-scavenging applications that were both printed on paper using inkjet technology (Image: Gary Meek)"^^<http://www.w3.org/2001/XMLSchema#string>
<http://newatlas.com/scavenging-ambient-electromagnetic-energy/19163/>