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Title: US7011884: Carbon nanotube with a graphitic outer layer
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Country: US United States of America

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12 pages

 
Inventor: Chow, Lee; Orlando, FL, United States of America
Zhou, Dan; Orlando, FL, United States of America
Kleckley, Stephen; Orlando, FL, United States of America

Assignee: University of Central Florida Research Foundation, Inc., Orlando, FL, United States of America
other patents from UNIVERSITY OF CENTRAL FLORIDA (599435) (approx. 135)
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Published / Filed: 2006-03-14 / 2003-04-25

Application Number: US2003000424336

IPC Code: Advanced: C01B 31/02; D01F 9/12;
Core: C01B 31/00; more...

ECLA Code: C01B31/02B;

U.S. Class: Current: 428/367; 423/447.1; 423/447.2; 977/742; 977/745; 977/860;
Original: 428/367; 423/447.1; 423/447.2; 977/DIG.1;

Field of Search: 428/367 423/447.1,447.2,447.3

Priority Number:
2003-04-25  US2003000424336
2000-03-17  US2000000528259

Abstract:     A method for manufacturing carbon nanotubes with an integrally attached outer graphitic layer is disclosed. The graphitic layer improves the ability to handle and manipulate the nanometer size nanotube device in various applications, such as a probe tip in scanning probe microscopes and optical microscopes, or as an electron emitting device. A thermal chemical vapor deposition reactor is the preferred reaction vessel in which a transition metal catalyst with an inert gas, hydrogen gas and a carbon-containing gas mixture are heated at various temperatures in a range between 500° C. and 1000° C. with gases and temperatures being adjusted periodically during the reaction times required to grow the nanotube core and subsequently grow the desired outer graphitic layer.

Attorney, Agent or Firm: Steinberger, Brian S. ; Law Offices of Brian S. Steinberger, P.A. ;

Primary / Asst. Examiners: Silverman, Stanley S.; Lish, Peter J.

INPADOC Legal Status: None          Buy Now: Family Legal Status Report

       
Related Applications:
Application Number Filed Patent Pub. Date  Title
US2000000528259 2000-03-17    2003-06-24  Carbon nanotube with a graphitic outer layer: process and application


       
Family: Show 3 known family members

First Claim:
Show all 5 claims
    1. A carbon nanotube device, the device comprising:

a carbon nanotube core having a diameter from approximately 1 nanometer to approximately 100 nanometers, the carbon nanotube core having a first end and a second end;

a graphitic outer layer integrally attached to the carbon nanotube core, the graphitic outer layer having a diameter of approximately 1 micrometer to approximately 10 micrometers, the graphitic outer layer having a first end and a second end, the first and the second ends of the graphitic outer layer completely encompassing the first and the second ends of the carbon nanotube core; and

a mechanically breakable portion of the second end of the graphitic outer layer, wherein the portion of the second end of the graphitic outer layer being mechanically broken off exposes and reveals a portion of the second end of the nanotube core.



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U.S. References: Go to Result Set: All U.S. references   |  No patents reference this one   |   Backward references (23)   |   Citation Link

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Patent  Pub.Date  Inventor Assignee   Title
Buy PDF- 6pp US4025689  1977-05 Kobayashi  Agency of Industrial Science & Technology Method for manufacture of graphitized hollow spheres and hollow spheres manufactured thereby
Buy PDF- 5pp US4228142  1980-10 Holcombe, Jr.   Process for producing diamond-like carbon
Buy PDF- 32pp US4816289  1989-03 Komatsu et al.  Asahi Kasei Kogyo Kabushiki Kaisha Process for production of a carbon filament
Buy PDF- 9pp US4855091  1989-08 Geus  The Dow Chemical Company Method for the preparation of carbon filaments
Buy PDF- 19pp US5165909  1992-11 Tennent  Hyperion Catalysis Int'l., Inc. Carbon fibrils and method for producing same
Buy PDF- 8pp US5346683  1994-09 Green  Gas Research Institute Uncapped and thinned carbon nanotubes and process
Buy PDF- 7pp US5456986  1995-10 Majetich  Carnegie Mellon University Magnetic metal or metal carbide nanoparticles and a process for forming same
Buy PDF- 7pp US5543378  1996-08 Wang  E. I. Du Pont de Nemours and Company Carbon nanostructures encapsulating palladium
Buy PDF- 3pp US5560898  1996-10 Uchida  Director-General of Agency of Industrial Science and Technology Process of isolating carbon nanotubes from a mixture containing carbon nanotubes and graphite particles
Buy PDF- 11pp US5641466  1997-06 Ebbesen  NEC Corporation Method of purifying carbon nanotubes
Buy PDF- 15pp US5698175  1997-12 Hiura  NEC Corporation Process for purifying, uncapping and chemically modifying carbon nanotubes
Buy PDF- 6pp US5747161  1998-05 Iijima  NEC Corporation Graphite filaments having tubular structure and method of forming the same
Buy PDF- 12pp US5780101  1998-07 Nolan  Arizona Board of Regents on behalf of the University of Arizona Method for producing encapsulated nanoparticles and carbon nanotubes using catalytic disproportionation of carbon monoxide
Buy PDF- 21pp US5824470  1998-10 Baldeschwieler et al.  California Institute of Technology Method of preparing probes for sensing and manipulating microscopic environments and structures
Buy PDF- 13pp US5965267  1999-10 Nolan  Arizona Board of Regents on behalf of the University of Arizona Method for producing encapsulated nanoparticles and carbon nanotubes using catalytic disproportionation of carbon monoxide and the nanoencapsulates and nanotubes formed thereby
Buy PDF- 7pp US6159538  2000-12 Rodriguez   Method for introducing hydrogen into layered nanostructures
Buy PDF- 12pp US6331209  2001-12 Jang  Jang; Jin Method of forming carbon nanotubes
Buy PDF- 14pp US6350488  2002-02 Lee  Iljin Nanotech Co., Ltd. Mass synthesis method of high purity carbon nanotubes vertically aligned over large-size substrate using thermal chemical vapor deposition
Buy PDF- 15pp US6413487  2002-07 Resasco  The Board of Regents of the University of Oklahoma Method and apparatus for producing carbon nanotubes
Buy PDF- 11pp US6455021  2002-09 Saito  Showa Denko K.K. Method for producing carbon nanotubes
Buy PDF- 9pp US6479028  2002-11 Kaner  The Regents of the University of California Rapid synthesis of carbon nanotubes and carbon encapsulated metal nanoparticles by a displacement reaction
Buy PDF- 12pp US6740403  2004-05 Gogotsi et al.  Toyo Tanso Co., Ltd. Graphitic polyhederal crystals in the form of nanotubes, whiskers and nanorods, methods for their production and uses thereof
Buy PDF- 32pp US6756026  2004-06 Colbert et al.  William Marsh Rice University Method for growing continuous carbon fiber and compositions thereof
       
Foreign References: None

Other References:
  • Dresselhaus et al. “Carbon Nanotubes: Synthesis, Structure, Properties, and Applications”, 2001, Spring Publishing, pp. 17-21.


  • Continuity Data:
    Application Number Filed Notes

    US2005000282872 2005-11-18  is a division of
    >US2003000424336<  2003-04-25   (granted)
         US7011884 issued 2006-03-14   Carbon nanotube with a graphitic outer layer

    >US2003000424336< 2003-04-25  is a division of
    US2000000528259  2000-03-17   (granted)
         US6582673 issued 2003-06-24   Carbon nanotube with a graphitic outer layer: process and application

    >US2003000424336<   is a division of
    US2000000528259  2000-03-17
         US6582673 issued 2003-06-24   Carbon nanotube with a graphitic outer layer: process and application


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