Myung Shin Kim

US Patent:

7585420, Sep 8, 2009

Filed:

Dec 14, 2005

Appl. No.:

11/300031

Inventors:

Yuhuang Wang - Evanston IL, US
Robert H. Hauge - Houston TX, US
Howard K. Schmidt - Houston TX, US
Myung Jong Kim - Houston TX, US
W. Carter Kittrell - Houston TX, US

Assignee:

William Marsh Rice University - Houston TX

International Classification:

H01B 13/00
C03C 25/68

US Classification:

216 13, 216 58, 216 63, 216 89, 977745

Abstract:

The present invention is generally directed to catalyzed hot stamp methods for polishing and/or patterning carbon nanotube-containing substrates. In some embodiments, the substrate, as a carbon nanotube fiber end, is brought into contact with a hot stamp (typically at 200-800 C. ), and is kept in contact with the hot stamp until the morphology/patterns on the hot stamp have been transferred to the substrate. In some embodiments, the hot stamp is made of material comprising one or more transition metals (Fe, Ni, Co, Pt, Ag, Au, etc. ), which can catalyze the etching reaction of carbon with H, CO, HO, and/or O. Such methods can (1) polish the carbon nanotube-containing substrate with a microscopically smooth finish, and/or (2) transfer pre-defined patterns from the hot stamp to the substrate. Such polished or patterned carbon nanotube substrates can find application as carbon nanotube electrodes, field emitters, and field emitter arrays for displays and electron sources.

US Patent:

55248861, Jun 11, 1996

Filed:

Aug 25, 1994

Appl. No.:

8/296327

Inventors:

Myung K. Kim - Garden Grove CA

International Classification:

F41B 1502

US Classification:

273 84R

Abstract:

An adjustable nunchaku (10) comprises a pair of handles (12,14) attached together with a flexible member (20). The flexible member (20) is selectively attached to the handles (12,14) so that the length of flexible member (20) separating the handles (12,14) can be easily adjusted. The excess length of flexibly member (20) not used to hold the handles (12,14) together is stored in a passageway (26) in the handles (12,14). Further, the handles (12,14) are selectively attached to the flexible member (20) so that the handles (12,14) can be interchanged to change or fix the handles (12,14).