Nanosys, Inc.

Hyperion Catalysis International, Inc.

Oned Material, Inc.

Prvp Holdings, LLC

Chunming Niu

Stephen A Empedocles

Xiangfeng Duan

Linda T Romano

David P Stumbo

Vijendra Sahi

J Wallace Parce

Jay L Goldman

David Moy

Lein Ngaw

Jian Chen

Robert S Dubrow

Alan B Fischer

Robert Hoch

Jun Ma

Calvin Y H Chow

Lawrence A Bock

Yaoling Pan

Mihai A Buretea

Erik C Scher

R Hugh Daniels

James M Hamilton

Howard G Tennent

Asif Chishti

David Leslie Heald

Veeral Hardev

Shahriar Mostarshed

Mikio Takai

Jason M Willey

George Pontis

Dave Stumbo

Robert Hugh Daniels

Xianfeng Duan

Parce J Wallace

James M Willey

William P Freeman

Jeffery A Whiteford

Francisco A Leon

Naoya Ogata

Calvin Y Chow

Hans Biebuyck

Francesco Lemmi

Baixin Qian

Virginia Robbins

Thomas J McCarthy

Ionel C Stefan

Cheri X Y Pereira

Larry Bock

Alice Fischer-Colbrie

Carlos Casillas

Mihai A Bureatea

Calvin Y H Cho

Hugh Daniels

Alan Fisher

Porous and/or curved nanofiber bearing substrate materials are provided having enhanced surface area for a variety of applications including as electrical substrates, semipermeable membranes and barriers, structural lattices for tissue culturing and for composite materials, production of long unbranched nanofibers, and the like. A method of producing nanofibers is disclosed including providing a plurality of microparticles or nanoparticles such as carbon black particles having a catalyst material deposited thereon, and synthesizing a plurality of nanofibers from the catalyst material on the microparticles or nanoparticles. Compositions including carbon black particles having nanowires deposited thereon are further disclosed.

Porous substrates, articles, systems and compositions comprising nanofibers and methods of their use and production

A polymer composite composed of a polymerized mixture of functionalized carbon nanotubes and monomer which chemically reacts with the functionalized nanotubes. The carbon nanotubes are functionalized by reacting with oxidizing or other chemical media through chemical reactions or physical adsorption. The reacted surface carbons of the nanotubes are further functionalized with chemical moieties that react with the surface carbons and selected monomers. The functionalized nanotubes are first dispersed in an appropriate medium such as water, alcohol or a liquefied monomer and then the mixture is polymerized. The polymerization results in polymer chains of increasing weight bound to the surface carbons of the nanotubes. The composite may consists of some polymer chains imbedded in the composite without attachment to the nanotubes. The resulting composite yields superior chemical, physical and electrical properties over polymer composites that are only physically mixed and without binding to the surface carbons of the nanotubes.

Polymers containing functionalized carbon nanotubes

This invention provides novel nanofiber enhanced surface area substrates and structures comprising such substrates for use in various medical devices, as well as methods and uses for such substrates and medical devices. In one particular embodiment, methods for enhancing cellular functions on a surface of a medical device implant are disclosed which generally comprise providing a medical device implant comprising a plurality of nanofibers (e.g., nanowires) thereon and exposing the medical device implant to cells such as osteoblasts.

Medical device applications of nanostructured surfaces

Methods of oxidizing multiwalled carbon nanotubes are provided. The multiwalled carbon nanotubes are oxidized by contacting the carbon nanotubes with gas-phase oxidizing agents such as CO, O, steam, NO, NO, NO, O, and ClO. Near critical and supercritical water can also be used as oxidizing agents. The multiwalled carbon nanotubes oxidized according to methods of the invention can be used to prepare rigid porous structures which can be utilized to form electrodes for fabrication of improved electrochemical capacitors.

Methods of oxidizing multiwalled carbon nanotubes

Provided are inks and coatings including carbon nanotubes.

Electroconductive carbon fibril-based inks and coatings

The present invention discloses nanowires for use in a fuel cell comprising a metal catalyst deposited on a surface of the nanowires. A membrane electrode assembly for a fuel cell is disclosed which generally comprises a proton exchange membrane, an anode electrode, and a cathode electrode, wherein at least one or more of the anode electrode and cathode electrode comprise an interconnected network of the catalyst supported nanowires. Methods are also disclosed for preparing a membrane electrode assembly and fuel cell based upon an interconnected network of nanowires.

Nanowire-based membrane electrode assemblies for fuel cells

The present invention relates to electroconductive inks and methods of making and using the same. The electroconductive inks include carbon fibrils and a liquid vehicle. The electroconductive ink may further include a polymeric binder. The electroconductive filler used is carbon fibrils which may be oxidized. The ink has rheological properties similar to that of commercially available electroconductive inks that use carbon black as their filler. The ink can be screen-printed, slot-coated, sprayed, brushed or dipped onto a wide variety of substrates to form an electroconductive coating.

This invention provides composite materials comprising nanostructures (e.g., nanowires, branched nanowires, nanotetrapods, nanocrystals, and nanoparticles). Methods and compositions for making such nanocomposites are also provided, as are articles comprising such composites. Waveguides and light concentrators comprising nanostructures (not necessarily as part of a nanocomposite) are additional features of the invention.

Nanocomposites

Porous nanofiber bearing substrate materials are provided having enhanced surface area for a variety of applications including as electrical substrates, semipermeable membranes and barriers, structural lattices for tissue culturing and for composite materials, and the like.

An electrically conductive composite comprising a polyvinylidene fluoride polymer or copolymer and carbon nanotubes is provided. Preferably, carbon nanotubes may be present in the range of about 0.5-20% by weight of the composite. The composites are prepared by dissolving the polymer in a first solvent to form a polymer solution and then adding the carbon nanotubes into the solution. The solution is mixed using an energy source such as a sonicator or a Waring blender. A precipitating component is added to precipitate out a composite comprising the polymer and the nanotubes. The composite is isolated by filtering the solution and drying the composite.

Polyvinylidene fluoride composites and methods for preparing same

The present invention is directed to compositions of matter, systems, and methods to manufacture nanowires. In an embodiment, a method to produce a catalytic-coated nanowire growth substrate for nanowire growth is disclosed which comprises: (a) depositing a buffer layer on a substrate; (b) treating the buffer layer with boiled water or steam to enhance interactions between the buffer layer and catalyst particles; and (c) depositing catalytic particles on a surface of the buffer layer. Methods to develop and use this catalytic-coated nanowire growth substrate are disclosed.

Systems and methods for nanowire growth and manufacturing

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Palo Alto, CA, United States of America

Chunming Niu