Mary E Moss

US Patent:

55050930, Apr 9, 1996

Filed:

Nov 21, 1994

Appl. No.:

8/342906

Inventors:

Ryan E. Giedd - Springfield MO
Yongqiang Wang - Springfield MO
Mary G. Moss - Rolla MO
James Kaufmann - Newburg MO
Terry L. Brewer - Rolla MO

Assignee:

Brewer Science, Inc. - Rolla MO

International Classification:

G01L 118

US Classification:

73774

Abstract:

An electrical type strain gauge for measuring both micro and macro deformations. The gauge may be constructed from thin films of homogeneously conductive polymers, including soluble polyaniline-based conducting polymers and ion-implanted organic polymers. The gauges are characterized by unexpected piezoresistivity from materials having high bulk resistivity, thermal stability, good flexibility, photoimageability and without adding carbon or metal particulate material to the polymer.

US Patent:

57535230, May 19, 1998

Filed:

Nov 21, 1994

Appl. No.:

8/342865

Inventors:

Ryan E. Giedd - Springfield MO
Mary G. Moss - Rolla MO
James Kaufmann - Newburg MO
Terry Lowell Brewer - Rolla MO

Assignee:

Brewer Science, Inc. - Rolla MO

International Classification:

H01L 2484

US Classification:

437 18

Abstract:

Organic films are applied from solvent solution to a substrate, then are ion implanted to have resistivity in the kilohm/square to gigaohm/square range. The films are then patterned by standard lithographic procedures, with surprisingly little loss of conductivity, in spite of contact with organic solvents or acidic or basic etchant solutions during the patterning process. Both structures which contact the substrate, and freestanding conductive polymer bridges, can be formed. The invention provides a method of producing electrical devices which does not require the use of single crystal semiconductor substrates or deposition of inorganic semiconductors. The resulting devices are highly resistant to damage from abrasion, solvents, acids, bases, and moisture.