University of California

E.i. Dupont De Nemours and Company

Other

The United States of America as Represented by the United States

David J Devlin

Don Mayo Coates

Robert S Barbero

Thomas Arthur Archuleta

Graciela Beatriz Blanchet-Fincher

David C Smith

Martin E Carrera

David F Eaton

Steven M Valone

David W Carroll

Joseph R Laia, Jr

Narasimhan Calamur

Lauren A Hall

Tom Archuleta

Robert P Currier

Aris K Silzars

John G Cowie

A process for improving the mechanical properties, particularly the flexural rigidity, of aramid fibers by directly depositing a diamond-like-carbon coating onto the surface of the fibers is disclosed. Diamond-like-carbon (DLC) coated aramid fibers having increased flexural rigidity are also disclosed. DLC coated aramid fibers show an increase in flexural rigidity and suppression of low yielding behavior when compared to uncoated aramid fibers.

Diamond-like-carbon coated aramid fibers having improved mechanical properties

The present invention relates to an improved method and apparatus for separating one or more condensable compounds from a mixture of two or more gases of differing volatilities by capillary fractionation in a membrane-type apparatus, and a method of forming porous structures therefor. More particularly, the invention includes methods of forming and using an apparatus consisting, at least in part, of a porous structure having capillary-type passages extending between a plurality of small openings on the first side and larger openings on a second side of the structure, the passages being adapted to permit a condensed liquid to flow therethrough substantially by capillary forces, whereby vapors from the mixture are condensed, at least in part, and substantially in and adjacent to the openings on the first side, and are caused to flow in a condensed liquid state, substantially in the absence of vapor, from the openings on the first side to the openings on the second side.

Methods of forming and using porous structures for energy efficient

Capacitively coupled RF diamond-like-carbon reactor

A composite article is disclosed including a porous structural member formed of carbon fiber, the porous structural member containing a multiplicity of pores of dimensions greater than about 200 microns in diameter, the porous structural member further including carbon fill material within a portion of the pores such that the pores are essentially less than about 200 microns in diameter, the porous structural member including carbon fill material defining a composite carbon/carbon intermediate article including an outer surface and a thin coating of diamond-like carbon upon the outer surface of the composite carbon/carbon intermediate article. The composite article may serve as a prosthetic device for replacement joints, bone structures and the like.

Carbon based prosthetic devices

A plasma enhanced chemical vapor deposition process for depositing a titanium nitride film on a polymeric substrate is provided, the process including placing the polymeric substrate within a chemical vapor deposition chamber evacuated to a pressure within a range of from about 0.1 Torr to about 10 Torr, heating the polymeric substrate to a temperature within a range of from about 150.degree. C. to about 250.degree. C., introducing a vaporized organometallic compound and ammonia gas into the chamber, generating a plasma within the chamber, and, maintaining the polymeric substrate within the chamber for a time sufficient for a layer of titanium nitride to deposit upon the polymeric substrate.

Plasma enhanced OMCVD of thin film coating for polymeric fibers

A field emission electron emitter comprising an electrode formed of at least one diamond, diamond-like carbon or glassy carbon composite fiber, said composite fiber having a non-diamond core and a diamond, diamond-like carbon or glassy carbon coating on said non-diamond core, and electronic devices employing such a field emission electron emitter.

Diamond fiber field emitters

A method for producing reinforced ceramic composite articles by means of chemical vapor infiltration and deposition in which an inverted temperature gradient is utilized. Microwave energy is the source of heat for the process.

Chemical vapor infiltration using microwave energy

Growing community of inventors

Los Alamos, NM, United States of America

David J Devlin