Ut-battelle, Inc.

Other

Tyco Electronics Corporation

University of Tennessee Research Foundation

Lockheed Martin Energy Research Corporation

Xsilogy Inc.

Elo Touchsystems, Inc.

Robert J Warmack

Charles L Britton, Jr

Thomas George Thundat

G Samuel Hurst

Donald W Bouldin

John T Simpson

Justin S Baba

Brian R D'urso

Edward Chaum

M Nance Ericson

Joel Christopher Kent

Mitchel John Doktycz

Sanjay V Patel

Milton Nance Ericson

William Louis Bryan

Todd Mlsna

David R Baselt

Bernd Fruhberger

Erno Klaassen

Patrick I Oden

Rufus H Ritchie

Robert L Jones

Eric A Wachter

Stephen Fulton Smith

Roger Allen Kisner

Tolga Aytug

Patrick Ian Oden

James Anthony Moore

Timothy Robert Armstrong

Yarom Polsky

John P Brainard

Frederick Charles Montgomery

David Lawrence West

Thomas L Ferrell

Pooran Chandra Joshi

Steven Shane Frank

K Bruce Jacobson

Michael Joseph Kuhn

Chris A Pickett

David E Ritchie

James R Younkin

Richard A Willems

Andrzej Nycz

R H Ritchie

Eric Laurent Finot

Stephen J Kennel

Robin C Reddick

Scott L Stewart

Christine Fisher

Rufus H Richie

A low-cost and low-power polyaniline-based (PANI) gas sensor is provided. The PANI-based gas sensor is formed on a flexible polyimide (PI) substrate using additive manufacturing techniques. The gas sensor can include silver interdigitated electrode (IDE) arrays and conducting polymeric sensing films (i.e., PANI) that are printed onto the PI substrate using a direct-write technology of aerosol-jet printing. Aerosol-jet printing enables high-resolution, non-contact deposition of both the electrode and chemically sensitive materials. The gas sensor is optionally capable of 5 ppm sensitivity and a sub-ppm detection limit.

Gas sensor and method of manufacture

A system and method verifies continuity with and measures voltage across a circuit under test (in some instances simultaneously) using two or more test probes. Two or more probe continuity circuits measure continuity through the test probes by injecting a test current through and measuring a processed test current received at each of the plurality of test probes. The probe continuity circuits measure the respective processed test current rendered by the test current flowing through the test circuit at each test probe. A voltmeter measures the potential difference across the test probes.

Electrical meter probe contact verification system

Sensing devices, systems and methods for securing articles against tampering using a unique magnetic field signature measured at two different times are provided. One or more sensing devices are secured to a ferrous surface portion of a target container. The sensing devices are secured using a plurality of magnets. The unique magnetic field signature sensed by a sensing device is produced by a combination of the plurality of magnets of the sensing device and the ferrous surface portion of the target container and earth's magnetic field. The two different times being one of a baseline measurement session and one of an observation measurement session. An observation measurement session may be triggered by a shock event or periodically.

Magnetic field sensing for tamper-indicating devices

A multiplier assembly for a power supply and a method of manufacturing the multiplier assembly. The multiplier assembly may be a stack of capacitors and support elements electrically and mechanically coupled together to form a first capacitor string and a second capacitor string. The support elements may electrically and mechanically connect adjacent series capacitors in the first capacitor string. Additionally or alternatively, the support elements may electrically and mechanically connect adjacent series capacitors in the second capacitor string. In one embodiment, the power supply may include drive and feedback circuitry capable of controlling operation of the multiplier assembly.

Power supply and method of manufacturing

In one embodiment, the present invention provides a device and method for treating recurrent corneal erosion. In one embodiment, the method includes the steps of contacting an epithelium layer of a cornea with an array of glass micro-rods including a plurality of sharp features having a length that penetrates a Bowman's layer of the eye, wherein the plurality of sharp features of the array of glass micro-rods produces a plurality of punctures in the Bowman's layer of the eye that are of micro-scale or less. In another embodiment, the present invention provides a method and device for drug delivery. In one embodiment, the device includes an array of glass micro-rods, wherein at least one glass micro-rod of the array of glass micro-rods includes a sharp feature opposite a base of the array of glass micro-rods, wherein the sharp feature includes a treated surface for delivering a chemical compound to the eye.

Microfabricated instruments and methods to treat recurrent corneal erosions

An array-type sensor that senses NHincludes non-Nernstian sensing elements constructed from metal and/or metal-oxide electrodes on an Oion conducting substrate. In one example sensor, one electrode may be made of platinum, another electrode may be made of manganese (III) oxide (MnO), and another electrode may be made of tungsten trioxide (WO). Some sensing elements may further include an electrode made of LaSrCoFeOand another electrode made of LaCrMgO.

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Microfabricated instruments and methods to treat recurrent corneal erosion

In one embodiment, the present invention provides a method of removing scar tissue from an eye that includes inserting a device including an array of micro-rods into an eye, wherein at least one glass micro-rod of the array of glass micro-rods includes a sharp feature; contacting a scar tissue with the array of micro-rods; and removing the array of micro-rods and the scar tissue from the eye. In another embodiment, the present invention provides a medical device for engaging a tissue including and an array of glass micro-rods, wherein at least one glass micro-rod of the array of glass micro-rods includes a sharp feature opposite a base of the array of glass micro-rods that is connected to the cannula, wherein the sharp feature of the at least one micro-rod is angled from a plane that is normal to a face of the base of the array of glass micro-rods.

Retinal instrument

A computer readable medium has instructions to calibrate a touch system by detecting touch points on a touchscreen that are each associated with touchscreen coordinates in a touchscreen coordinate system. The instructions associated each of the touch points with known calibration targets, and each of the calibration targets has display coordinates in a display coordinate system that is associated with at least one of a display screen and an operating system. The instructions fit the display coordinates and the touchscreen coordinates non-linearly with respect to each other based on a generalized Laplace-constrained fit that is used to identify correction parameters used to map a user generated run-time touch point on the touchscreen to a display coordinate location on a display screen. The correction parameters represent non-linear corrections.

Method and apparatus for laplace constrained touchscreen calibration

A touch sensor method and device are described that allow one or more simultaneous touches to be sensed and mapped to Cartesian coordinates. The device utilizes closely spaced multiple conducting strips to provide digital location of a touch position according to the position strip and analog location along the length of the strip. When the strips are energized individually and in coordinated ways, multiple touches are individually sensed and their positions are reported.

Multiple-touch sensor

A new touch screen design provides for corrections of non-uniformities, more accurate touch point measurement, and multiple simultaneous touch point measurements through the use of a grid of relatively conductive lines.

Touch screen with relatively conductive grid

A touch sensors with improved topological equivalence between an equipotential space and a Cartesian space to which the equipotential space will be mapped. The touch sensor comprises a substrate with a touch region, and a set of electrodes that are electrically coupled to the touch region. The touch sensor further comprises a plurality of resistive band segments that frames the touch region. The electrodes are located between the resistive band segments. Each resistive band segment has a resistivity that is intermediate between the resistivity of the electrodes and the resistivity of the touch region, thereby providing a transition between the low resistivity electrodes and the high resistivity touch region, and improving the topological equivalence within the corners of the touch region. At least one of the band segments has a non-uniform linear resistance to provide further improvement to the topological equivalence.

Touch sensor with non-uniform resistive band

A surface wave chemical detector comprising at least one surface wave substrate, each of said substrates having a surface wave and at least one measurable surface wave parameter; means for exposing said surface wave substrate to an unknown sample of at least one chemical to be analyzed, said substrate adsorbing said at least one chemical to be sensed if present in said sample; a source of radiation for radiating said surface wave substrate with different wavelengths of said radiation, said surface wave parameter being changed by said adsorbing; and means for recording signals representative of said surface wave parameter of each of said surface wave substrates responsive to said radiation of said different wavelengths, measurable changes of said parameter due to adsorbing said chemical defining a unique signature of a detected chemical.

Surface wave chemical detector using optical radiation

A sensor for determining the presence of an analyte is disclosed comprising a reactive layer disposed between a base plate and a movable plate. The reactive layer is configured to interact with an analyte effecting a change in capacitance between the base plate and movable plate. When the analyte has a polarity or overall Hildebrand solubility parameter that is similar to the reactive layer, the change in capacitance is caused by a swelling of the reactive layer as analyte is absorbed into the reactive layer. This results in a decrease in capacitance. When the analyte has a solubility parameter not near the reactive layer, the absorbed analyte causes the reactive layer's total polarity to increase, an effect that dominates swelling. This causes an increase in capacitance. A capacitive sensing circuit is included for measuring the change in capacitance which is indicative of the analyte exposed to the sensor.

Sensor and sensor array having improved selectivity

Sensor having improved selectivity

Growing community of inventors

Knoxville, TN, United States of America

Robert J Warmack