National Technology & Engineering Solutions of Sandia, LLC

Sandia Corporation

Other

Parker-hannifin Corporation

Michael P Siegal

William Graham Yelton

Katharine Lee Harrison

Frank Dominguez

Carlos R Perez

Kyle Chris Klavetter

Matthaeus Wolak

Tina M Nenoff

Michael C Wanke

Alex Robinson

Stephen Wayne Howell

Paul A Miller

Curtis D Mowry

William M Cost

Amalie L Frischknecht

Paul D Pochan

Kazi Zulfiqur Ali Hassan

Donald L Overmyer

Joshua J Whiting

Paul Cuillier

This invention is directed to an inexpensive, miniaturized, portable, low-power device and method for electrophoretic separation and electrochemical detection of an analyte, including different isotopes of the same element. The invention replaces a conventional or microfabricated capillary electrophoresis tube with a microchip comprising an array of parallel electrophoretic separation nanotubes or aligned hollow channels fabricated in a porous substrate.

Electrophoretic device and method to separate and detect analyte ions

We provide an electrochemical sensor in which working microelectrodes are arranged in an array and interconnected in parallel. The working electrodes are arranged so that in use, they are electrochemically coupled to a counter electrode structure through an electrolyte. The sensor also includes a microporous body arranged so that in use, it is situated at a boundary between a gaseous environment and the electrolyte. In another aspect, we provide a method of sensing in which a sample of gas is admitted to a liquid electrolyte maintained by pores of a porous substrate. A voltage is applied to the liquid electrolyte, and an electrical response to the applied voltage is observed, thereby to detect electrochemical evidence of an analyte within the liquid electrolyte.

Electrochemical detection of gas phase chemicals

Nanoporous carbon can provide a binderless, three-dimensional form of graphene as a host material for sodium-ion batteries or supercapacitors.

Nanoporous carbon as host material for sodium

Nanoporous carbon provides a binderless, three-dimensional form of graphene as an anode material for lithium-ion batteries.

Nanoporous carbon as an anode material for Li-ion batteries

A portable analytical system for detecting organic chemicals in water comprising a miniature preconcentrator and a SAW detector, the latter being characterized by a nanoporous carbon coating that provides improved response compared to prior art polymer coatings, particularly when detecting low concentrations of trihalomethane chemicals, such as chloroform and bromoform.

Portable analytical system for detecting organic chemicals in water

A nanoelectrode array comprises a plurality of nanoelectrodes wherein the geometric dimensions of the electrode controls the electrochemical response, and the current density is independent of time. By combining a massive array of nanoelectrodes in parallel, the current signal can be amplified while still retaining the beneficial geometric advantages of nanoelectrodes. Such nanoelectrode arrays can be used in a sensor system for rapid, non-contaminating field analysis. For example, an array of suitably functionalized nanoelectrodes can be incorporated into a small, integrated sensor system that can identify many species rapidly and simultaneously under field conditions in high-resistivity water, without the need for chemical addition to increase conductivity.

Nanoelectrode array for electrochemical analysis

A system for applying a volatile element-HTS layer, such as Tl-HTS, to a substrate in a multiple zone furnace, said method includes heating at higher temperature, in one zone of the furnace, a substrate and adjacent first source of Tl-HTS material, to sublimate Tl-oxide from the source to the substrate; and heating at lower temperature, in a separate zone of the furnace, a second source of Tl-oxide to replenish the first source of Tl-oxide from the second source.

Efficient growth of HTS films with volatile elements

Methods and apparatuses for coating materials, and the products and compositions produced thereby. Substances, such as diamond or diamond-like carbon, are deposited onto materials, such as a filament or a plurality of filaments simultaneously, using one or more cylindrical, inductively coupled, resonator plasma reactors.

Method for simultaneously coating a plurality of filaments

Growing community of inventors

Albuquerque, NM, United States of America

Michael P Siegal