Julia Drew Greer

US Patent:

8299341, Oct 30, 2012

Filed:

May 13, 2010

Appl. No.:

12/779780

Inventors:

Julia R. Greer - Pasadena CA, US
Michael Burek - Waterloo, CA

Assignee:

The California Institute of Technology - Pasadena CA

International Classification:

H01L 21/44

US Classification:

977712, 977721, 977722, 977816, 438479, 438679, 438681, 438678, 257E51043

Abstract:

Solid and hollow cylindrical nanopillars with nanoscale diameters are provided. Also provides is a method of making such nanopillars using electron beam lithography followed by the electroplating.

US Patent:

8465795, Jun 18, 2013

Filed:

May 20, 2008

Appl. No.:

12/123732

Inventors:

Rene Lujan - Sunnyvale CA, US
William S. Wong - San Carlos CA, US
Julia Rosolovsky Greer - Pasadena CA, US

Assignee:

Palo Alto Research Center Incorporated - Palo Alto CA

International Classification:

B05D 5/12
B05D 3/02

US Classification:

427 971, 4273741

Abstract:

A method of forming a thin-film layered electronic device over a flexible substrate comprises the steps of depositing a buffer layer over the flexible substrate, heating the substrate and buffer layer stack to a temperature at which plastic deformation of the buffer layer takes place, cooling the stack, then forming the thin-film electronic device over the plastically deformed buffer layer without further plastic deformation of the buffer layer. The heating and cooling to cause plastic deformation of the buffer layer is referred to as annealing. The thin-film electronic device is formed by a process according to which all steps are performed at a temperature below that at which further plastic deformation of the buffer layer occurs. In-process strain and runout are reduced, improving device yield on flexible substrates. An optional metal base layer may be formed over the buffer layer prior annealing.

US Patent:

8557507, Oct 15, 2013

Filed:

Nov 7, 2011

Appl. No.:

13/291002

Inventors:

Dongchan Jang - Pasadena CA, US
Julia R. Greer - Pasadena CA, US

Assignee:

California Institute of Technology - Pasadena CA

International Classification:

G03F 7/26

US Classification:

430315, 430320

Abstract:

Nanopillars with nanoscale diameters are provided where the nanopillar has uniformly aligned nano-twins either perpendicular or inclined by 1-90 to the pillar-axis with no grain-boundaries or any other features.

US Patent:

20100281963, Nov 11, 2010

Filed:

Dec 26, 2007

Appl. No.:

11/964450

Inventors:

Julia R. Greer - Pasadena CA, US

Assignee:

California Institute of Technology. - Pasadena CA

International Classification:

G01N 3/42

US Classification:

73 82

Abstract:

The invention is an indenter tip that is modified to permit both compression testing and tensile testing on samples having dimensions smaller than approximately 1 μm. The modified indenter tip has both a surface that can be used to apply compressive forces, and tines that can be used to engage a free end of a specimen to be tested in tension. The apparatus used to perform the tests includes elements of a scanning electron microscope that permit visualization of the specimen to be tested and the modified indenter tip, so as to permit appropriate alignment and engagement of the same. The apparatus also includes elements of a microindenter that provide mechanical manipulation of the relative position and orientation of the modified indenter tip and of the specimen to be tested, as well as the necessary controls and instrumentation to perform the test and to collect, record and manipulate data.

US Patent:

20120181346, Jul 19, 2012

Filed:

Jan 13, 2012

Appl. No.:

13/350734

Inventors:

Harold F. GREER - Pasadena CA, US
Julia R. GREER - Pasadena CA, US

International Classification:

A61L 9/04
B29C 59/02
C23F 1/00
C03C 15/00
B82Y 40/00

US Classification:

239 1, 216 67, 216 24, 216 41, 264293, 239 34, 977887, 977888

Abstract:

A method of controlling wetting characteristics is described. Such method includes forming and configuring nanostructures on a surface where controlling of the wetting characteristics is desired. Surfaces and methods of fabricating such surfaces are also described.

US Patent:

20120205656, Aug 16, 2012

Filed:

Apr 23, 2012

Appl. No.:

13/453881

Inventors:

Rene Lujan - Sunnyvale CA, US
William S. Wong - San Carlos CA, US
Julia R. Greer - Pasadena CA, US

Assignee:

PALO ALTO RESEARCH CENTER INCORPORATED - Palo Alto CA

International Classification:

H01L 29/786

US Classification:

257 57, 257E29273

Abstract:

A thin-film layered electronic device, or array of devices, is formed over a layer structure comprising a flexible substrate, a buffer layer, and a metal layer. The layer structure is annealed to permanently deform the layer structure beyond its plastic deformation limit. The thin-film electronic device is formed thereover by a process according to which all steps are performed at a temperature below that at which further plastic deformation of the buffer layer occurs. In-process strain and runout are reduced, improving device yield on flexible substrates. The metal layer forms a first layer of the thin-film layered device, or array of devices.

US Patent:

20220336933, Oct 20, 2022

Filed:

Apr 12, 2022

Appl. No.:

17/718705

Inventors:

- Pasedena CA, US
Julia R. GREER - Pasadena CA, US

International Classification:

H01M 50/569

Abstract:

A method of interrogating an electrochemical cell includes: applying a positive direct current to the electrochemical cell for a first time period, wherein the positive direct current is characterized by a first magnitude; applying a negative direct current to the electrochemical cell for a second time period, wherein the negative direct current is characterized by a second magnitude; wherein the first and second time periods have a combined duration of less than 2 seconds; wherein the second magnitude is equal to or within 50% of the first magnitude; recording cell resistance data of the electrochemical cell during each time period; and analyzing the cell resistance data to determine at least one of: (i) state of charge of the electrochemical cell; (ii) state of health of the electrochemical cell; and (iii) the resistance anisotropy of the cell.

US Patent:

20220314183, Oct 6, 2022

Filed:

Mar 31, 2022

Appl. No.:

17/710456

Inventors:

- Pasadena CA, US
Julia R. GREER - Pasadena CA, US
Max L. LIFSON - Pasadena CA, US
Michael A. CITRIN - Pasadena CA, US

Assignee:

California Institute of Technology - Pasadena CA

International Classification:

B01J 13/00
H01M 4/48
G03F 7/004
G03F 7/00
B01J 6/00
G03F 7/032
C08G 65/00
C08K 3/28
G03F 7/20
H01M 4/133

Abstract:

In an aspect, a method for making a metal-containing material comprises steps of: forming a metal-containing hydrogel from an aqueous precursor mixture using a photopolymerization; wherein the aqueous precursor mixture comprises water, one or more aqueous photosensitive binders, and one or more aqueous metal salts; and thermally treating the metal-containing hydrogel to form the metal-containing material; wherein the metal-containing hydrogel is exposed to a thermal-treatment atmosphere during the step of thermally treating; wherein a composition of the metal-containing material is at least partially determined by a composition of the thermal-treatment atmosphere during the thermally treating step.