Teledyne Scientific and Imaging, LLC

The Boeing Company

Rockwell International Corporation

Teledyne Licensing, LLC

Dennis R Strauss

Vivek Mehrotra

Martin William Kendig

Rahul Ganguli

Alan B Harker

Young J Chung

Ten-Luen T Liao

Thomas Krebs

Paulus Henricus Johannes Verbeek

Jeffrey DeNatale

Leslie F Warren, Jr

Linda S Powers

Walther Ellis

A filtration membrane coating comprising a hydrophilic polymer, a surfactant, and one or more charged compounds, each containing one or more sulfonate functionalities and one or more linkable functionalities selected from the group consisting of amine, monochlorotriazine, and dichlorotriazine. The hydrophilic polymer and surfactant form a thin primer layer which is also superhydrophilic. The primer layer improves flux, and enables improved adhesion of the one or more charged compounds, which form a charged dye layer on top of the primer layer when enhances rejection of charged divalent ions. The coating can be applied while the membrane is packaged in its final form, such as in a spiral wound or other configuration.

High flux, chlorine resistant coating for sulfate removal membranes

A coated granular filtration medium is formed by the deposition of an electrolyte layer onto core particles. The electrolyte layer comprises a cationic polyelectrolyte. The coated granular filtration medium provides a synergistic combination of filtration and in situ coagulation that enables efficient, effective, and economical decontamination of industrial and other wastewaters.

Coated granular filtration media

A layered construction for application to a device or substrate or placement in an enclosed space for use in decontaminating the underlying surface or enclosed space comprises a cathode, an electrolyte layer, an anode and a protective surface layer. A compound that can be electrically decomposed to release on demand and over an extended period of time, an oxidant is included in the layered structure, preferably in the electrolyte layer. Preferred compounds are those which can release halogen ions which react with various different chemical or biological contaminants which may contact the protective layer, destroying, or devitalizing the contaminants.

Multilayer self-decontaminating coatings

A method and device for producing an aligned carbon nanotube array. The arrays of aligned carbon nanotubes (CNTs) may be formed by drying liquid dispersions of CNTs on a nanoporous substrate under an applied electrostatic field. The array may be used in a number of applications including electronics, optics, and filtration, including desalination.

Device for forming vertically aligned carbon nanotube arrays

A layered construction for use in decontaminating a surface or enclosed space is described. The construction is an electrochemical cell which includes a cathode, an electrolyte layer, an anode and a protective surface layer. A precursor compound that can be electrically decomposed to release an oxidant, on demand and over an extended period of time, is included in the layered structure, preferably in the electrolyte layer. The oxidant compounds react with various different chemical or biological contaminants in contact the protective layer, thereby deactivating, destroying or devitalizing the contaminants. The layered construction is suitable for application to a device or substrate, or placement in an enclosed space, and can be used on sensitive surfaces such as electronic components and human skin.

A superhydrophobic structure that may have a titanium substrate and nanoporous titanium oxide layer grown on the titanium substrate by anodization. The titanium oxide layer may have a plurality of nano-tube structures that create a microscopically rough surface on the titanium substrate. A hydrophobic coating may be deposited over the titanium oxide layer to create a superhydrophobic surface on the titanium substrate. The titanium oxide layer may provide a photocatalytic reaction with oxygen in surrounding air to oxidize organic contaminants on the superhydrophobic surface.

Self-cleaning superhydrophobic surface

Vertically aligned carbon nanotube arrays from liquid dispersions

A macrocyclic pore-apertured carbon nanotube apparatus is disclosed. The carbon nanotube apparatus can be used to filter or exclude ions, solutes in solution, as well as particles suspended in a colloidal mixture. The nanotube apparatus includes a carbon nanotube having a carboxylated portion at least one pore entrance and at least one molecular aperture adapted to be bonded to the carboxylated portion of the carbon nanotube. The molecular aperture is further adapted to prevent dissolved ions in a solution from entering the pore entrance. Methods for preparing and using the apparatus are also disclosed. The apparatus can also be incorporated into to filtration media for conducting reverse osmosis filtration.

Macrocyclic pore-apertured carbon nanotube apparatus

A method for providing a superhydrophobic surface on a structure, for example aircraft wings, propellers and/or rotors, is set forth. The method includes applying a coating of hydrofluoric acid over a titanium substrate. A voltage is then applied across the titanium substrate so that current flows through the titanium substrate. The current flowing through the titanium substrate causes the hydrofluoric acid to react with the titanium substrate to anodize the titanium substrate. The anodization causes a nanoporous titanium oxide layer to grow across the titanium substrate. The titanium oxide layer includes a plurality of nano-tube structures that, once the remaining hydrofluoric acid is washed away, provide a microscopically rough surface on the titanium substrate. A conformal coating of a hydrophobic compound is then desposited on the microscopically rough surface to create a superhydrophobic surface. Thus, a substantially self-cleaning superhydrophobic surface is created on the titanium substrate, whereby, when exposed to ultraviolet light, the titanium oxide layer has a photocatalytic reaction with oxygen to oxidize any organic contaminants that may gather on the superhydrophobic surface.

A photolithographic method and associated apparatus are provided that permit three-dimensional structures to be defined in a photoresist coating in such a manner that multi-level structures can be formed which have constant width at different depths within the photoresist coating. The photolithographic method and apparatus may permit such three-dimensional structures to be defined within a photoresist coating with the use of a single polychromatic mask and, optionally, a micro-lens array. By designing the polychromatic mask to have a plurality of regions that selectively pass and block respective wavelengths of light, the photoresist coating can be selectively illuminated with light have different wavelengths. As a result of the optical absorption characteristics of the photoresist coating, the different wavelengths of light propagate to different depths within the photoresist coating, thereby defining multi-level microstructures therein.

Photolithographic method and apparatus employing a polychromatic mask

A method of forming a superhydrophobic material () includes mixing a hydrophobic material () with soluble particles () to form a mixture (). The mixture () is cured. A portion of the soluble particles () is etched away from the mixture () to form the superhydrophobic material (). A superhydrophobic material forming system () includes a mixer () that mixes a hydrophobic binder () with soluble particles () to form the mixture (). A curing station () cures the mixture (). An applicator () applies a solvent () to the mixture () to etch away a portion of the soluble particles () from the mixture () to form the superhydrophobic material ().

Renewable superhydrophobic coating

A tool for embossing high aspect ratio microstructures is provided, wherein the microstructures provide decreased surface reflection and increased transmission through an optical component even at high incident angles. The tool is fabricated by a process that comprises anisotropic etching of columnar pits in a silicon substrate using inductively coupled plasma, followed by isotropic reactive ion etching of the columnar pits to create relatively pointed obelisks. The silicon substrate is then preferably rinsed to remove remaining photoresist prior to vapor depositing a conductive layer thereon. Finally, a metal is electroformed over the conductive layer to form the embossing tool. The embossing tool is then pressed against an optical coating, for example a polymer sheet, to create microstructures having aspect ratios from 1 to 5.

Process for fabricating high aspect ratio embossing tool and microstructures

A method for producing oxidant/dopant reagent solutions which comprises reacting a basic ferric carboxylate, preferably basic ferric acetate, with an alkyl or aryl sulfonic acid, e.g., benzenesulfonic acid, to produce the corresponding ferric sulfonate in solution. Oxidant/dopant solutions can also be prepared containing cupric or ceric sulfonates. The oxidant/dopant solution is employed in situ for reaction with a pyrrole to produce electrically conductive polypyrrole. A porous substrate, such as fiberglass cloth, can be dipped in the oxidant/dopant solution, dried and then treated with a pyrrole to produce an electrically conductive polypyrrole deposit in the interstices of the substrate.

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Ventura, CA, United States of America

Dennis R Strauss