John A Whitson

US Patent:

6498349, Dec 24, 2002

Filed:

Aug 5, 1999

Appl. No.:

09/368919

Inventors:

Clarence E. Thomas - Knoxville TN
Larry R. Baylor - Farragut TN
Edgar Voelkl - Oak Ridge TN
Michael L. Simpson - Knoxville TN
Michael J. Paulus - Knoxville TN
Douglas H. Lowndes - Knoxville TN
John H. Whealton - Oak Ridge TN
John C. Whitson - Clinton TN
John B. Wilgen - Oak Ridge TN

Assignee:

UT-Battelle - Oakridge TN

International Classification:

H01J 37073

US Classification:

250398, 250397, 250423 F

Abstract:

Systems and methods are described for addressable field emission array (AFEA) chips. A method of operating an addressable field-emission array, includes: generating a plurality of electron beams from a pluralitly of emitters that compose the addressable field-emission array; and focusing at least one of the plurality of electron beams with an on-chip electrostatic focusing stack. The systems and methods provide advantages including the avoidance of space-charge blow-up.

US Patent:

6917043, Jul 12, 2005

Filed:

Sep 30, 2002

Appl. No.:

10/260321

Inventors:

Clarence E. Thomas - Knoxville TN, US
Larry R. Baylor - Farragut TN, US
Edgar Voelkl - Oak Ridge TN, US
Michael L. Simpson - Knoxville TN, US
Michael J. Paulus - Knoxville TN, US
Douglas Lowndes - Knoxville TN, US
John Whealton - Oak Ridge TN, US
John C. Whitson - Clinton TN, US
John B. Wilgen - Oak Ridge TN, US

Assignee:

UT-Battelle LLC - Oak Ridge TN

International Classification:

H01J037/073
H01J037/28
H01J037/302

US Classification:

250398, 250310, 2504922, 250423 F

Abstract:

Systems and method are described for addressable field emission array (AFEA) chips. A plurality of individually addressable cathodes are integrated with an electrostatic focusing stack and/or a plurality of detectors on the addressable field emission array. The systems and methods provide advantages including the avoidance of space-charge blow-up.

US Patent:

D413689, Nov 17, 1998

Filed:

Jun 17, 1997

Appl. No.:

D/075974

Inventors:

Joseph E. Baader - Springfield OH
John C. Whitson - Oklahoma City OK

International Classification:

2606

US Classification:

D26 36