Abstract: Vapor plasma deposition of titanium (Ti) metal onto a substrate forms a structured surface that exhibits enhanced cell attachment properties. Initially deposited round nanoparticulate surface structures develop tentacles with a spine or thorn-like appearance upon continued deposition under special conditions. The density and size of the formed spinulose particles can be controlled by timing the deposition intervals. A significant increase in osteoblast, fibroblast and endothelial cell attachment is observed on Ti spinulose surfaces compared to attachment on nanoparticulate surfaces lacking spinulous nanostructure.
Type:
Grant
Filed:
October 31, 2007
Date of Patent:
April 17, 2012
Assignee:
Metascape LLC
Inventors:
Christina Kay Thomas, Luke J. Ryves, Daniel M. Storey
Abstract: Disclosed are a nanocrater catalyst in metal nanoparticles with a nanocrater form of hole structure in center of the catalyst which is useful for manufacturing nano-sized materials and/or articles with desired structure and characteristics, a preparation method thereof including a plasma etching and chemical etching process (“PTCE process”), and nano-sized materials and/or articles manufactured by using the nanocrater catalyst in metal nanoparticles.
Type:
Grant
Filed:
December 12, 2007
Date of Patent:
March 20, 2012
Assignee:
Korea Advanced Institute of Science and Technology
Abstract: A device for patterning structures on a substrate includes an imaging device having a scanning tip, a light emitting device, and a space around the scanning tip. The space comprises a vapor of a material which is suitable for Chemical Vapor Deposition onto the substrate when decomposed. The light emitting device is adapted to emit a light beam, which has an intensity not capable to decompose the vapor, onto the scanning tip in such a way that an electromagnetic field induced by the light beam near the scanning tip is high enough to decompose the vapor.
Type:
Grant
Filed:
November 9, 2004
Date of Patent:
November 8, 2011
Assignee:
International Business Machines Corporation
Inventors:
Siegfried F. Karg, Roland Germann, Heike E. Riel, Walter Heinrich Riess, Reto Schlittler
Abstract: A method for making a field emission cathode includes the steps of: (a) providing a substrate having a first substrate surface and a second substrate surface opposite to the first substrate surface; (b) forming a conductive film on the first substrate surface; (c) forming a catalyst film on the conductive film, the catalyst film including carbonaceous material; (d) flowing a mixture of a carrier gas and a carbon source gas over the catalyst film; (e) focusing a laser beam on the catalyst film and/or on the second substrate surface to locally heat the catalyst to a predetermined reaction temperature; and (f) growing an array of the carbon nanotubes via the catalyst film to form a field emission cathode.
Type:
Grant
Filed:
November 2, 2007
Date of Patent:
November 1, 2011
Assignees:
Tsinghua University, Hon Hai Precision Industry Co., Ltd.
Inventors:
Zhuo Chen, Chun-Xiang Luo, Kai-Li Jiang, Shou-Shan Fan