Cantilever light detectors having a mechanical cantilever to...

Details Cantilever light detectors having a mechanical cantilever to... Cantilever light detectors having a mechanical cantilever to...

2007-11-27

2007-11-27

Le, Que T (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S548000

Reexamination Certificate

active

11400909

ABSTRACT:
An apparatus includes a chamber, an electro-mechanical driver, a window, and a mechanical cantilever. The chamber has an interior in which the mechanical cantilever is located. The mechanical cantilever has a first end that is attached to the electro-mechanical driver and has second end that is free. The driver is configured to drive the mechanical cantilever to perform an oscillatory motion. The window is located along a wall of the chamber to enable external light to enter the chamber and illuminate a portion of the mechanical cantilever. The mechanical cantilever is configured to mechanically respond to being illuminated by the external light entering the chamber via the window.

REFERENCES:
patent: 5329103 (1994-07-01), Rando
patent: 6489776 (2002-12-01), Stowe et al.
U.S. Appl. No. 11/036,438, filed Jan. 13, 2005, Aksyuk et al.
U.S. Appl. No. 10/954,739, filed Sep. 30, 2004, Blumberg et al.
Stowe, T.D. et al., “Attonewton.force detection using ultrathin silicon cantilevers,” Applied Physics Letters, vol. 71, pp. 288-290, 1997.
Mamin, H.J. et al., “Sub-attonewton force detection at millikelvin temperatures,” Applied Physics Letters, vol. 79, No. 20, pp. 3358-3360, Nov. 12, 2001.
Grober, R.D. et al., “Fundamental limits to force detection using quartz tuning forks,” Review of Scientific Instruments, vol. 71, No. 7, pp. 2776-2780, Jul. 2000.

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