Piezo-optical pressure sensitive switch and methods for fabricat

Details Piezo-optical pressure sensitive switch and methods for fabricat Piezo-optical pressure sensitive switch and methods for fabricat

1994-04-28

1996-10-29

Thomas, Tom

Fishing, trapping, and vermin destroying

437901, 437 71, 437821, 437927, H01C 21306

Patent

active

055696260

ABSTRACT:
Piezo-optical pressure sensitive devices employing porous semiconductor material as a stress sensitive member. The devices monitor pressure or force applied thereto by detecting a corresponding change in the amount of light absorbed by a porous layer of semiconductive material such as silicon. A pressure or stress signal is thus converted into an optical one. The sensing element of an optical switch embodiment of the device is comprised of a transparent layer of material upon which there is disposed a porous layer of semiconductive material. When unstressed, the porous layer absorbs monochromatic light of a predetermined wavelength. When the porous layer is stressed, a metallized epitaxial layer formed thereon reflects the light back through the transparent layer where it can be detected by a light detection system.

REFERENCES:
patent: 4204185 (1980-05-01), Kurtz et al.
patent: 4878107 (1989-10-01), Hopper
patent: 4935935 (1990-06-01), Reed et al.
patent: 4975390 (1990-12-01), Fujii et al.
patent: 5242863 (1993-09-01), Xiang-Zheng et al.
patent: 5272355 (1993-12-01), Namavar et al.
patent: 5277748 (1994-01-01), Sakaguchi et al.
patent: 5286671 (1994-02-01), Kurtz et al.
patent: 5352635 (1994-10-01), Tu et al.
patent: 5405786 (1995-04-01), Kurtz
patent: 5454915 (1995-10-01), Shor et al.
patent: 5461001 (1995-10-01), Kurtz et al.
Cavity Quantum Electrodynamics, Scientific American, Serge Haroche and Jean-Michel Raimond, Apr. 1993, pp. 54-62.
Piezoresistance and Quantum Confinement in Microcrystalline Silicon, Materials Research Society Symposium Proc., vol. 256, J. S. Foresi and T. D. Moustakas, 1992, pp. 77-82.
A 1024-Element High-Performance Silicon Tactile Imager, IEEE Transactions on Electron Devices, vol. 17, No. 8, Suzuki et al., Aug. 1990, pp. 1852-1859.

Affiliated with

Also associated with

Rating

Piezo-optical pressure sensitive switch and methods for fabricat does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Piezo-optical pressure sensitive switch and methods for fabricat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Piezo-optical pressure sensitive switch and methods for fabricat will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1785518