Chris Phillip Tigges

US Patent:

6391393, May 21, 2002

Filed:

Feb 22, 2001

Appl. No.:

09/791505

Inventors:

James E. Martin - Tijeras NM
Robert A. Anderson - Albuquerque NM
Chris P. Tigges - Albuquerque NM

Assignee:

Sandia Corporation - Albuquerque NM

International Classification:

C08F 246

US Classification:

427487, 427128, 427130, 427132, 4273855, 427532, 427548, 427599

Abstract:

A method of forming a dual-level memory material using field structured materials. The field structured materials are formed from a dispersion of ferromagnetic particles in a polymerizable liquid medium, such as a urethane acrylate-based photopolymer, which are applied as a film to a support and then exposed in selected portions of the film to an applied magnetic or electric field. The field can be applied either uniaxially or biaxially at field strengths up to 150 G or higher to form the field structured materials. After polymerizing the field-structure materials, a magnetic field can be applied to selected portions of the polymerized field-structured material to yield a dual-level memory material on the support, wherein the dual-level memory material supports read-and-write binary data memory and write once, read many memory.

US Patent:

6605339, Aug 12, 2003

Filed:

Dec 19, 2001

Appl. No.:

10/025449

Inventors:

Albert C. Marshall - Sandia Park NM
Stanley H. Kravitz - Placitas NM
Chris P. Tigges - Albuquerque NM
Gregory A. Vawter - Albuquerque NM

Assignee:

Sandia Corporation - Albuquerque NM

International Classification:

B32B 326

US Classification:

428195, 428220, 428446, 428450, 428698

Abstract:

A highly effective, micron-scale micro heat barrier structure and process for manufacturing a micro heat barrier based on semiconductor and/or MEMS fabrication techniques. The micro heat barrier has an array of non-metallic, freestanding microsupports with a height less than 100 microns, attached to a substrate. An infrared reflective membrane (e. g. , 1 micron gold) can be supported by the array of microsupports to provide radiation shielding. The micro heat barrier can be evacuated to eliminate gas phase heat conduction and convection. Semi-isotropic, reactive ion plasma etching can be used to create a microspike having a cusp-like shape with a sharp, pointed tip (0. 1 micron), to minimize the tips contact area. A heat source can be placed directly on the microspikes. The micro heat barrier can have an apparent thermal conductivity in the range of 10 to 10 W/m-K.

US Patent:

6673254, Jan 6, 2004

Filed:

Dec 19, 2001

Appl. No.:

10/025446

Inventors:

Albert C. Marshall - Sandia Park NM
Stanley H. Kravitz - Placitas NM
Chris P. Tigges - Albuquerque NM
Gregory A. Vawter - Albuquerque NM

Assignee:

Sandia Corporation - Albuquerque NM

International Classification:

B32B 3100

US Classification:

216 2, 216 11, 216 24, 216 41, 216 46, 216 66, 216 67, 216 83, 216100, 20419232, 20419234, 21912169

Abstract:

Methods for fabricating a highly effective, micron-scale micro heat barrier structure and process for manufacturing a micro heat barrier based on semiconductor and/or MEMS fabrication techniques. The micro heat barrier has an array of non-metallic, freestanding microsupports with a height less than 100 microns, attached to a substrate. An infrared reflective membrane (e. g. , 1 micron gold) can be supported by the array of microsupports to provide radiation shielding. The micro heat barrier can be evacuated to eliminate gas phase heat conduction and convection. Semi-isotropic, reactive ion plasma etching can be used to create a microspike having a cusp-like shape with a sharp, pointed tip (0. 1 micron), to minimize the tips contact area. A heat source can be placed directly on the microspikes.

US Patent:

6774532, Aug 10, 2004

Filed:

Dec 20, 2001

Appl. No.:

10/028144

Inventors:

Albert C. Marshall - Sandia Park NM
Donald B. King - Albuquerque NM
Kevin R. Zavadil - Bernalillo NM
Stanley H. Kravitz - Placitas NM
Chris P. Tigges - Albuquerque NM
Gregory A. Vawter - Albuquerque NM

Assignee:

Sandia Corporation - Albuquerque NM

International Classification:

H01L 3700

US Classification:

310304, 310305, 602031, 375321, 136201

Abstract:

A self-powered microthermionic converter having an internal thermal power source integrated into the microthermionic converter. These converters can have high energy-conversion efficiencies over a range of operating temperatures. Microengineering techniques are used to manufacture the converter. The utilization of an internal thermal power source increases potential for mobility and incorporation into small devices. High energy efficiency is obtained by utilization of micron-scale interelectrode gap spacing. Alpha-particle emitting radioisotopes can be used for the internal thermal power source, such as curium and polonium isotopes.

US Patent:

6827134, Dec 7, 2004

Filed:

Apr 30, 2002

Appl. No.:

10/137155

Inventors:

Michael J. Rightley - Albuquerque NM
Douglas R. Adkins - Albuquerque NM
James J. Mulhall - Albuquerque NM
Charles V. Robino - Albuquerque NM
Mark Reece - Albuquerque NM
Paul M. Smith - Albuquerque NM
Chris P. Tigges - Albuquerque NM

Assignee:

Sandia Corporation - Albuquerque NM

International Classification:

F28D 1500

US Classification:

16510426, 16510421, 16510433, 361700, 257715

Abstract:

A parallel-plate heat pipe is disclosed that utilizes a plurality of evaporator regions at locations where heat sources (e. g. semiconductor chips) are to be provided. A plurality of curvilinear capillary grooves are formed on one or both major inner surfaces of the heat pipe to provide an independent flow of a liquid working fluid to the evaporator regions to optimize heat removal from different-size heat sources and to mitigate the possibility of heat-source shadowing. The parallel-plate heat pipe has applications for heat removal from high-density microelectronics and laptop computers.

US Patent:

7697134, Apr 13, 2010

Filed:

Nov 6, 2006

Appl. No.:

11/593386

Inventors:

Michael B. Sinclair - Albuquerque NM, US
Kent B. Pfeifer - Los Lunas NM, US
Jeb H. Flemming - Albuquerque NM, US
Gary D. Jones - Tijeras NM, US
Chris P. Tigges - Albuquerque NM, US

Assignee:

Sandia Corporation - Albuquerque NM

International Classification:

G01J 3/04

US Classification:

356310, 356319, 356326

Abstract:

A correlation spectrometer can detect a large number of gaseous compounds, or chemical species, with a species-specific mask wheel. In this mode, the spectrometer is optimized for the direct measurement of individual target compounds. Additionally, the spectrometer can measure the transmission spectrum from a given sample of gas. In this mode, infrared light is passed through a gas sample and the infrared transmission signature of the gasses present is recorded and measured using Hadamard encoding techniques. The spectrometer can detect the transmission or emission spectra in any system where multiple species are present in a generally known volume.

US Patent:

7928375, Apr 19, 2011

Filed:

Oct 21, 2008

Appl. No.:

12/254932

Inventors:

Michael A. Mangan - Albuquerque NM, US
Matthew G. Blain - Albuquerque NM, US
Chris P. Tigges - Albuquerque NM, US
Kevin L. Linker - Albuquerque NM, US

Assignee:

Sandia Corporation - Albuquerque NM

International Classification:

H01J 49/26

US Classification:

250292, 250283, 250291

Abstract:

An array of microfabricated linear Paul-Straubel ion traps can be used for mass spectrometric applications. Each ion trap comprises two parallel inner RF electrodes and two parallel outer DC control electrodes symmetric about a central trap axis and suspended over an opening in a substrate. Neighboring ion traps in the array can share a common outer DC control electrode. The ions confined transversely by an RF quadrupole electric field potential well on the ion trap axis. The array can trap a wide array of ions.

US Patent:

6257048, Jul 10, 2001

Filed:

Jun 18, 1999

Appl. No.:

9/335762

Inventors:

Susan Leslie Hietala - Placitas NM
Vincent Mark Hietala - Placitas NM
Chris Phillip Tigges - Albuquerque NM

Assignee:

The United States of America as represented by the United States Department
of Energy - Washington DC

International Classification:

G01N 2920

US Classification:

73 2401

Abstract:

A method and apparatus for measuring surface changes, such as mass uptake at various pressures, in a thin-film material, in particular porous membranes, using multiple differently-configured acoustic sensors.