Gary L Hunter

US Patent:

6763699, Jul 20, 2004

Filed:

Feb 6, 2003

Appl. No.:

10/359940

Inventors:

Gary W. Hunter - Oberlin OH
Philip G. Neudeck - Ohmsted Falls OH

Assignee:

The United States of America as represented by the Administrator of Natural Aeronautics and Space Administration - Washington DC

International Classification:

G01M 704

US Classification:

73 3106, 73 3105

Abstract:

Gas sensor devices are provided having an atomically flat silicon carbide top surface that, in turn, provides for a uniform, and reproducible surface thereof.

US Patent:

7389675, Jun 24, 2008

Filed:

May 12, 2006

Appl. No.:

11/434578

Inventors:

Gary W. Hunter - Oberlin OH, US
Jennifer C. Xu - Olmsted Township OH, US
Dorothy Lukco - Sagamore Hills OH, US

Assignee:

The United States of America as represented by the National Aeronautics and Space Administration - Washington DC

International Classification:

G01N 27/00

US Classification:

73 3106, 257253

Abstract:

A miniaturized Schottky diode hydrogen and hydrocarbon sensor and the method of making same is disclosed and claimed. The sensor comprises a catalytic metal layer, such as palladium, a silicon carbide substrate layer and a thin barrier layer in between the catalytic and substrate layers made of palladium oxide (PdO). This highly stable device provides sensitive gas detection at temperatures ranging from at least 450 to 600 C. The barrier layer prevents reactions between the catalytic metal layer and the substrate layer. Conventional semiconductor fabrication techniques are used to fabricate the small-sized sensors. The use of a thicker palladium oxide barrier layer for other semiconductor structures such as a capacitor and transistor structures is also disclosed.

US Patent:

8001828, Aug 23, 2011

Filed:

Jun 20, 2008

Appl. No.:

12/143139

Inventors:

Gary W. Hunter - Oberlin OH, US
Jennifer C. Xu - Olmsted Township OH, US
Dorothy Lukco - Sagamore Hills OH, US

Assignee:

The United States of America as represented by the Administrator of National Aeronautics and Space Administration - Washington DC

International Classification:

G01N 27/00

US Classification:

73 3106, 257253

Abstract:

A miniaturized Schottky diode hydrogen and hydrocarbon sensor and the method of making same is disclosed and claimed. The sensor comprises a catalytic metal layer, such as palladium, a silicon carbide substrate layer and a thin barrier layer in between the catalytic and substrate layers made of palladium oxide (PdO). This highly stable device provides sensitive gas detection at temperatures ranging from at least 450 to 600 C. The barrier layer prevents reactions between the catalytic metal layer and the substrate layer. Conventional semiconductor fabrication techniques are used to fabricate the small-sized sensors. The use of a thicker palladium oxide barrier layer for other semiconductor structures such as a capacitor and transistor structures is also disclosed.

US Patent:

8052854, Nov 8, 2011

Filed:

May 25, 2007

Appl. No.:

11/754255

Inventors:

Gary W. Hunter - Oberlin OH, US
Jennifer C. Xu - Olmsted Township OH, US
Chung Chiun Liu - Cleveland Heights OH, US
Benjamin J. Ward - Northfield Center OH, US

Assignee:

The United States of America as represented by the Administrator of National Aeronautics and Space Administration - Washington DC

International Classification:

G01N 27/407

US Classification:

204426, 204424, 205784

Abstract:

A gas sensor includes a substrate and a pair of interdigitated metal electrodes selected from the group consisting of Pt, Pd, Au, Ir, Ag, Ru, Rh, In, and Os. The electrodes each include an upper surface. A first solid electrolyte resides between the interdigitated electrodes and partially engages the upper surfaces of the electrodes. The first solid electrolyte is selected from the group consisting of NASICON, LISICON, KSICON, and β″-Alumina (beta prime-prime alumina in which when prepared as an electrolyte is complexed with a mobile ion selected from the group consisting of Na, K, Li, Ag, H, Pb, Sr or Ba). A second electrolyte partially engages the upper surfaces of the electrodes and engages the first solid electrolyte in at least one point. The second electrolyte is selected from the group of compounds consisting of Na, K, Li, Ag, H, Pb, Sr or Ba ions or combinations thereof.

US Patent:

20120263870, Oct 18, 2012

Filed:

Oct 7, 2011

Appl. No.:

13/267978

Inventors:

Gary W. Hunter - Oberlin OH, US
Jennifer C. Xu - Olmsted Township OH, US
Chung Chiun Liu - Cleveland Heights OH, US
Benjamin C. Ward - Northfield Center OH, US

International Classification:

H05K 13/00

US Classification:

427125

Abstract:

A gas sensor includes a substrate and a pair of interdigitated metal electrodes selected from the group consisting of Pt, Pd, Au, Ir, Ag, Ru, Rh, In, and Os. The electrodes each include an upper surface. A first solid electrolyte resides between the interdigitated electrodes and partially engages the upper surfaces of the electrodes. The first solid electrolyte is selected from the group consisting of NASICON, LISICON, KSICON, and β″-Alumina (beta prime-prime alumina in which when prepared as an electrolyte is complexed with a mobile ion selected from the group consisting of Na, K, Li, Ag, H, Pb, Sr or Ba). A second electrolyte partially engages the upper surfaces of the electrodes and engages the first solid electrolyte in at least one point. The second electrolyte is selected from the group of compounds consisting of Na, K, Li, Ag, H, Pb, Sr or Ba ions or combinations thereof.

US Patent:

20180321210, Nov 8, 2018

Filed:

May 4, 2018

Appl. No.:

15/971784

Inventors:

- Washington DC, US
Gary W. Hunter - Oberlin OH, US

International Classification:

G01N 33/00
H01L 29/872
H01L 29/66
H01L 29/47
G01N 27/02
H01L 21/04
G01N 33/22
G01N 27/12
H01L 29/16

Abstract:

Systems, methods, and other embodiments associated with gas detecting sensors. According to one embodiment, a gas sensor includes a metal layer, a barrier interlayer, a substrate layer, a first insulating layer, a conduction path, a contact pad, and a second insulating layer. The conduction path connects the metal layer to the contact pad. The second insulating layer prevents diffusion through the contact pad, the conduction path, or the metal layer. The sensor includes a wire bonded electrical connection to the contact pad such that voltage can be determined and/or applied.

Address:

321 Lk Mariam Blvd, Winter Haven, FL 33884

Phone:

8633258601

VIN:

19UUA66267A032919

Make:

ACURA

Model:

TL

Year:

2007