Ping Wang Liu

US Patent:

7205699, Apr 17, 2007

Filed:

Aug 27, 2005

Appl. No.:

11/212273

Inventors:

Ping Liu - Thousand Oaks CA, US
Cameron G. Massey - Hawthorne CA, US
Geoffrey P. McKnight - Los Angeles CA, US
Guillermo Herrera - Winnetka CA, US

Assignee:

HRL Laboratories, LLC - Malibu CA

International Classification:

A61F 2/08

US Classification:

310300

Abstract:

In some embodiments, an actuator is provided having a graphite comprising actuation region located between electrodes. An ion storage region is located between the electrodes, with a separator region between the actuation and the storage region. The actuation region may include graphite structures embedded in an elastic matrix, the elastic matrix is adapted to allow transport of chemical species capable of intercalating within the graphite structures. A separator region is located between the electrodes, along with an ion generation region capable of reversible electrochemical production and elimination of ions. In some embodiments, an actuator is provided with at least one of the electrode and the counter electrode including graphite. An electrolyte therebetween having a graphite intercalate ion source.

US Patent:

7274128, Sep 25, 2007

Filed:

Jan 20, 2005

Appl. No.:

11/038905

Inventors:

Ping Liu - Thousand Oaks CA, US
Cameron Massey - Hawthorne CA, US
Leslie Momoda - Los Angeles CA, US
Geoffrey P. McKnight - Los Angeles CA, US
Alan J. Jacobsen - Los Angeles CA, US

Assignee:

HRL Laboratories, LLC - Malibu CA

International Classification:

H02N 11/00

US Classification:

310300

Abstract:

One nanostructured actuator embodiment includes an actuation region between electrical contacts. The actuation region includes an elastic matrix with embedded nanocomposite layered structures, which have inorganic material layers with pillared organic material structures between the inorganic material layers responsive to the surface acidity of the inorganic material layers. The elastic matrix allows transport of species for changing the surface acidity. A separator region is between the electrical contacts. A proton generation region capable of reversible electrochemical production and elimination of protons is provided, which may be a hydrogen storage material located on a side of the separator region opposite the actuation region, which may include metal hydride, or metal hydroxide. Alternatively, it may include an electrolytic solution and conductive particles within the elastic matrix for in situ electrochemical generation of an acid/base. The conductive particles may include carbon nanotubes, metal fibers, and/or metal nanoparticles.

US Patent:

7298017, Nov 20, 2007

Filed:

Aug 28, 2004

Appl. No.:

10/927965

Inventors:

Ping Liu - Thousand Oaks CA, US
Cameron Massey - Hawthorne CA, US
Leslie Momoda - Los Angeles CA, US
Geoffrey McKnight - Los Angeles CA, US
Alan Jacobsen - Los Angeles CA, US

Assignee:

HRL Laboratories, LLC - Malibu CA

International Classification:

H01L 29/84
H01L 27/14

US Classification:

257415, 257420, 257428

Abstract:

In one embodiment, a solid state actuator is provided having a solid state lithium storage material and a solid state volume changing material having a metal capable of changing volume in response to lithium insertion and removal. A solid state lithium ion transport material is located between the lithium storage material and the volume changing material. A pair of electrodes are connected so as to be capable of providing an actuation voltage across the lithium storage material and the volume changing material. In some embodiments, the volume changing material has active material particles comprised of metal contained in an inactive matrix. The active material particles may be aligned so that when the active material particles expand the volume changing material expands substantially in one direction. In some embodiments the volume changing material is a metal alloy and the lithium transport material is a high stiffness material. In some embodiments, multiple actuators are stacked, interleaved, or pillared.

US Patent:

7419635, Sep 2, 2008

Filed:

May 5, 2001

Appl. No.:

10/239977

Inventors:

Ping Liu - San Diego CA, US
C. Edwin Tracy - Golden CO, US
J. Roland Pitts - Lakewood CO, US
Se-Hee Lee - Lakewood CO, US

Assignee:

Midwest Research Institute - Kansas City MO

International Classification:

G01N 33/00

US Classification:

422 88, 422 50, 422 55, 422 56, 422 57, 422 83

Abstract:

A sensor structure for chemochromic optical detection of hydrogen gas over a wide response range, that exhibits stability during repeated coloring/bleaching cycles upon exposure and removal of hydrogen gas, comprising: a glass substrate (); a vanadium oxide layer () coated on the glass substrate; and a palladium layer () coated on the vanadium oxide layer.

US Patent:

7776201, Aug 17, 2010

Filed:

Jun 15, 2005

Appl. No.:

11/154115

Inventors:

John J. Vajo - West Hills CA, US
Ping Liu - Thousand Oaks CA, US

Assignee:

HRL Laboratories - Malibu CA

International Classification:

C25B 1/00

US Classification:

205357, 205358, 205549

Abstract:

A method for regenerating chemical hydrides from metal oxides and electrochemical cell for use in carrying out the method. The electrochemical cell has a cathode side with molten salt and a cathode, and an anode electrode side with an anode. The cathode side and the anode side are separated by an oxygen anion-conducting membrane. A metal oxide is placed in the molten salt of the cathode side and an electrical potential is applied to the cathode and anode while feeding hydrogen to the cathode electrode to effectuate conversion of the metal oxide to a metal hydride and feeding hydrogen to the anode to generate water and free electrons.

US Patent:

7939899, May 10, 2011

Filed:

Oct 20, 2007

Appl. No.:

11/975589

Inventors:

Ping Liu - Thousand Oaks CA, US
Cameron Massey - Hawthorne CA, US
Leslie Momoda - Los Angeles CA, US
Geoffrey McKnight - Los Angeles CA, US
Alan Jacobsen - Los Angeles CA, US

Assignee:

HRL Laboratories, LLC - Malibu CA

International Classification:

H01L 29/84
H01L 27/14

US Classification:

257415, 257420, 257428

Abstract:

In one embodiment, a solid state actuator is provided which includes a pair of electrodes and a solid state storage material having a plating material. A solid state ion transport material is adjacent the solid state storage material such that the solid state storage material is located between an anode of the pair of electrodes and the solid state ion transport material. The pair of electrodes are connected so as to be capable of providing an actuation voltage across the solid state storage material to provide transport of plating material cations through the solid state ion transport material between the solid state storage material and a cathode electrode of the pair of electrodes.

US Patent:

7944007, May 17, 2011

Filed:

Nov 3, 2007

Appl. No.:

11/934774

Inventors:

Ping Liu - Thousand Oaks CA, US
Cameron Massey - Hawthorne CA, US
Leslie Momoda - Los Angeles CA, US
Geoffrey McKnight - Los Angeles CA, US
Alan Jacobsen - Los Angeles CA, US

Assignee:

HRL Laboratories, LLC - Malibu CA

International Classification:

H01L 29/84

US Classification:

257415, 257420

Abstract:

In some embodiments, an actuator assembly is provided which includes actuators, having a storage material, a volume changing material comprising a metal capable of changing volume in response to species insertion and removal, an ion transport material between the storage material and the volume changing material, and electrodes connected so as to be capable of providing an actuation voltage to the plurality of actuators. The actuators are configured such that the actuator assembly provides substantially anisotropic movement. In some embodiments, the actuator assembly includes actuators arranged in a stacked configuration. In some embodiments, the volume changing material includes spaced apart elongated structures which may be recessed within the storage material.

US Patent:

8084265, Dec 27, 2011

Filed:

Mar 31, 2008

Appl. No.:

12/059356

Inventors:

Ping Liu - San Diego CA, US
C. Edwin Tracy - Golden CO, US
J. Roland Pitts - Lakewood CO, US
Se-Hee Lee - Lakewood CO, US

Assignee:

Alliance for Sustianable Energy, LLC - Golden CO

International Classification:

G01N 33/00

US Classification:

436144, 422 8201, 422500

Abstract:

Methods and Pd/VOdevices for hydrogen detection are disclosed. An exemplary method of preparing an improved sensor for chemochromic detection of hydrogen gas over a wide response range exhibits stability during repeated coloring/bleaching cycles upon exposure and removal of hydrogen gas. The method may include providing a substrate. The method may also include depositing a V0layer that functions as a Hinsertion host in a Pd/V0hydrogen sensor to be formed on said substrate. The method may also include depositing a Pd layer onto said V0layer; said Pd layer functioning as an optical modulator.