Irving P Herman

Author:

Irving P. Herman

ISBN #:

0123420709

Author:

Irving P. Herman

ISBN #:

0819407259

Author:

Irving P. Herman

ISBN #:

3540296034

Author:

Irving O. Herman

ISBN #:

0931837413

US Patent:

7510638, Mar 31, 2009

Filed:

Oct 27, 2004

Appl. No.:

10/974406

Inventors:

Irving P. Herman - Yorktown Heights NY, US
Mohammad A. Islam - State College PA, US

Assignee:

The Trustees of Columbia University in the city of New York - New York NY

International Classification:

C25D 13/02

US Classification:

204490

Abstract:

The present invention is directed to a method for depositing unpatterned or selectively patterned nanoparticle films of controlled thickness on the respective film deposition surface of each of a pair of electrodes. In the present method, a pair of electrodes, each having a conducting film deposition surface, are immersed in a non-conducting nonpolar solvent in which nanoparticles, each having ligands attached thereto, are suspended. A voltage is applied to the pair of electrodes thereby causing films of the nanoparticles to deposit on the respective film deposition surface of each of the pair of electrodes. The nanoparticle films formed by the present method may be unpatterned or they may be patterned by patterning the conducting film deposition surface of at least one electrode of the pair of electrodes. The nanoparticle films formed according to the method of the present invention are useful as layers in electronic devices.

US Patent:

20120171448, Jul 5, 2012

Filed:

Nov 8, 2011

Appl. No.:

13/291261

Inventors:

Austin Joseph Akey - Hanover VA, US
Irving Philip Herman - Bronx NY, US
Chenguang Lu - New York NY, US

International Classification:

B32B 5/16
B05C 7/04
B05D 7/22
B82Y 40/00

US Classification:

428220, 427235, 118 50, 118400, 977892

Abstract:

The disclosed subject matter relates to a method for forming an ordered assembly of nanoparticles in spatially defined regions. The method is based on migration of a dispersion of nanoparticles from a reservoir to a microchannel and controlled evaporation of the solvent in the dispersion to facilitate the formation of the ordered assembly in the microchannel. The disclosed subject matter also relates to an apparatus for preparing ordered assembly of nanoparticles, use of the ordered assembly of nanoparticles in the manufacture of materials and devices, and materials and devices based on or including such ordered assembly of nanoparticles.

US Patent:

20130228364, Sep 5, 2013

Filed:

Aug 26, 2008

Appl. No.:

12/198654

Inventors:

Sarbajit Banerjee - Buffalo NY, US
Irving P. Herman - Bronx NY, US

Assignee:

The Trustees of Columbia University In The City Of New York - New York NY

International Classification:

H05K 1/02
H05K 1/03
C25D 13/00

US Classification:

174255, 204489, 204622, 174250, 977882, 977936

Abstract:

A method for positioning carbon nanotubes on a substrate, the substrate including a first electrode and a second electrode thereon, the second electrode being positioned oppositely from the first electrode; the method includes: applying a first AC voltage across the first and second electrodes; providing a first resistance in series with the first AC voltage; and introducing a solution including at least one carbon nanotube; wherein, when the first AC voltage is applied through the first resistance across the first and second electrodes, the at least one carbon nanotube attaches to the first and second electrodes. Another aspect of the invention includes providing a metallic area between the first and second electrodes. In an additional aspect of the invention, the substrate includes a third electrode and a fourth electrode thereon, the fourth electrode being positioned oppositely from the third electrode, the third electrode being positioned adjacent to the first electrode; the method further includes: removing the first AC voltage; applying a second AC voltage to the third and fourth electrodes, the second AC voltage causing the first and second electrodes to have a floating potential; and providing a second resistance in series with the second AC voltage; wherein when the first AC voltage is applied across the first and second electrodes, the first AC voltage causes the third and fourth electrodes to have a floating potential, and wherein, when the second AC voltage is applied through the second resistance across the third and fourth electrodes, a second carbon nanotube attaches to the third and fourth electrodes.