Some of you might remember the Next Nature article by Rolf Coppens called Withus Oragainstus. Since then there have been occasional newsreports on cyborg insects. For instance this article from 2009 describing partly succesful attampts to wirelesly control the flight of beetles by connecting electrodes, a small battery and antenna's to their nervous system.
Now professor Khalil Najafi, the chair of electrical and computer engineering, and doctoral student Erkan Aktakka at the University of Michigan have incorporated thin-film solar cells, piezoelectric and thermoelectric energy harvesters to extend the batterylife that could be used to supply sensors and even a small camera with the needed juice. Imagine a swarm of these as first responders at hazardous sites like Fukushima, gathering information on radiation and other dangerous substances.