It's an interesting sensor, but the article didn't explain any technical details on how the thing is produced. Here's another article:
<a href="http://www.doctorslounge.com/index.php/news/pb/22316" rel="nofollow">http://www.doctorslounge.com/index.php/news/pb/22316</a><p>Technical Excerpt (for anyone interested):
"The EES incorporates electrophysiological, temperature, and strain sensors, transistors, light-emitting diodes, photodetectors, radio frequency inductors, capacitors, oscillators, and rectifying diodes. Solar cells and wireless coils provided power supply."<p>Seems to be made on a silicon substrate (excerpt):
"The investigators note that mechanical properties of the EES depend on the effective modulus and thickness of circuits, sensors, and the silicon-on-wafer substrate."