Title: Density controlled carbon nanotube array electrodes

Abstract

CNT materials comprising aligned carbon nanotubes (CNTs) with pre-determined site densities, catalyst substrate materials for obtaining them and methods for forming aligned CNTs with controllable densities on such catalyst substrate materials are described. The fabrication of films comprising site-density controlled vertically aligned CNT arrays of the invention with variable field emission characteristics, whereby the field emission properties of the films are controlled by independently varying the length of CNTs in the aligned array within the film or by independently varying inter-tubule spacing of the CNTs within the array (site density) are disclosed. The fabrication of microelectrode arrays (MEAs) formed utilizing the carbon nanotube material of the invention is also described.

Inventors:

Ren, Zhifeng F ^[1]; Tu, Yi ^[2]

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+ Show Inventor Affiliations

1. Newton, MA
2. Belmont, MA

Issue Date:

Tue Dec 16 00:00:00 EST 2008

Research Org.:

Boston College, Chestnut Hill, MA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

985711

Patent Number(s):

7465494

Application Number:

10/424,295

Assignee:

The Trustees of Boston College (Chestnut Hill, MA)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES

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B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

B01J23/76 - combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
B01J23/866 - {Nickel and chromium}
B01J35/006 - {metal crystallite size}
B01J37/0238 - {via the gaseous phase-sublimation}
B01J37/349 - {making use of flames, plasmas or lasers}

B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES

B82Y10/00 - Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
B82Y30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites
B82Y40/00 - Manufacture or treatment of nanostructures

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS

C01B2202/08 - Aligned nanotubes
C01B2202/34 - Length
C01B2202/36 - Diameter
C01B32/162 - characterised by catalysts

D - TEXTILES D01 - NATURAL OR MAN-MADE THREADS OR FIBRES D01F - CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS

D01F9/1271 - {Alkanes or cycloalkanes}
D01F9/1272 - {Methane}
D01F9/1275 - {Acetylene}
D01F9/1276 - {Aromatics, e.g. toluene}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

Y10S977/722 - On a metal substrate

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

Y10T428/2918 - including free carbon or carbide or therewith [not as steel]
Y10T428/30 - Self-sustaining carbon mass or layer with impregnant or other layer

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DOE Contract Number:  

FG02-00ER45805

Resource Type:

Patent

Country of Publication:

United States

Language:

English

Subject:

36 MATERIALS SCIENCE