Patent ID: 8451070

Claim:
A self powered microelectromechanical tagging or sensing system comprising: a microelectromechanical oscillator having a characteristic frequency, the oscillator comprising: a first substrate comprising a radioactive material configured to emit electrons; and second substrate, spaced apart from the first substrate by first and second ends supported at spaced locations on the first substrate, wherein the second substrate comprises a flexible material and is configured to: collect the electrons emitted from the first substrate; and move toward the first substrate from a default position to an actuated position when a sufficient number of electrons have been collected; wherein, in the actuated position, a plurality of the collected electrons are transferred from the second substrate to the first substrate; a circuitry configured to receive, from the oscillator by wireless communication, information indicative of the characteristic frequency of the oscillator; and a third substrate comprising a multi-layer of semiconductor p-n junctions, wherein a first surface of the third substrate is attached to a first surface of the first substrate, wherein a second surface of the first substrate faces the second substrate.