Oscillator apparatus

Details Oscillator apparatus Oscillator apparatus

2009-09-10

2011-10-25

Johnson, Ryan (Department: 2817)

Oscillators

Electromechanical resonator

Vibrating reed or string type

C331S154000, C331S1160FE, C331S046000, C977S732000, C977S932000, C977S742000, C333S197000

Reexamination Certificate

active

08044738

ABSTRACT:
An apparatus including a resonator electrode and a second electrode separated from the resonator electrode by a gap having a size that facilitates electron transfer across the gap, wherein the resonator electrode is a resonator electrode mounted for oscillatory motion relative to the second electrode that results in a size of the gap between the resonator electrode and the second electrode being time variable; a feedback circuit configured to convey an electron transfer signal dependent upon electron transfer across the gap as a feedback signal; and a drive electrode adjacent the resonator electrode configured to receive a feedback signal from a feedback circuit configured to provide a time-varying feedback signal dependent upon electron transfer across a gap.

REFERENCES:
patent: 6424074 (2002-07-01), Nguyen
patent: 2008/0204152 (2008-08-01), Feng et al.
patent: 2010/0271003 (2010-10-01), Jensen et al.
patent: WO-2005112126 (2005-11-01), None
Feng, X.L., C. J. White, A. Hijimiri, and M.L. Roukes (2008) A self-sustaining ultrahigh-frequency nanoelectromechanical oscillator Nat Nano 3(6), 342 (346) May 25, 2008.
Ayari, A.; Vincent, P.; Perisanu, S.; Choueib, M.; Gouttenoire, V.; Bechelancy, M.; Cornu, D. & Purcell, S. T.; “self—oscillations in field emission nanowire mechanical resonators: A Nanometric dc-ac Conversion”, Nano Letters, 2007, 7, 2252-2257.
Jensen, K., K. Kim, and A Zetti (2008) An Atomic-Resolution Nanomechanical Mass Sensor, Nat Nano 3 (9), 533(537) Jul. 20, 2008.
Jensen K., J. Welden, H. Garcia, and A. Zetti (2007), Nanotube Radio, Nano Lett. 7 (11), 3508(3511).

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