Scavenging energy from the air with antennas printed by ink jet printers

I think one of the coolest aspects of technology is miniaturization.  Great examples include modern portable music players of today such as iPods compared to portable record players of 50 years ago or modern smart phones compared to the original, bulky bag phones of 30 years ago.  Now, researcher Manos Tentzeris at the Georgia Institute of Technology has created antennas printed by ink jet printers capable of harvesting ambient energy from the environment such as that produced by broadcast stations or wireless access points.  Here's an interview with Tenzeris conducted for Smart Planet by Christina Hernandez.