Wireless Sensors: How Not to Replace 1000 Batteries: Nice brief review of long-lived power sources for sensors, including

• printed batteries (e.g., Power Paper);
• extended shelf-life mini-batteries with a nanomaterial called "nanograss;"
• a nuclear-powered battery that uses a speck of nickel-63 and a tiny cantilever of piezoelectric material (nickel-63 has a half-life of around 100 years)
• indoor lighting photovoltaics microbattery
• "strain energy harvesting" using the stretching of piezoelectric fibers

10:07:42 PM