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Luminal surface fabrication for cardiovascular prosthesesMethodology used for the production of highly ordered surfaces on polytetrafluoroethylene (PTFE) Teflon, for use of this material as a surface layer in small-diameter vascular prostheses, is described. Directed argon-ion beam sputter etching is used to produce highly ordered specific surface morphologies, and photolithographic techniques are used for pattern definition. The methodology also includes surface polishing of the samples, sputter deposition of the intermediary layer of gold to enhance photoresist adhesion and improve pattern resolution, and rotating of the sample to minimize the effects of ion-beam nonuniformity and asymmetry. Use of these techniques resulted in the formation of regular arrays of sharply defined hexagonal pillars with smooth vertical walls and large relief.
Document ID
19870061041
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Deininger, William D.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Gabriel, Stephen B.
(California Institute of Technology Jet Propulsion Laboratory, Pasadena, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1987
Publication Information
Publication: Journal of Biomedical Materials Research
Volume: 21
ISSN: 0021-9304
Subject Category
Nonmetallic Materials
Accession Number
87A48315
Distribution Limits
Public
Copyright
Other

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