US Government As Represented by the Secretary of the Army

The Johns Hopkins University

Luke J Currano

Konstantinos Gerasopoulos

Collin R Becker

Ronald G Polcawich

Gabriel L Smith

Mekbib Astatke

Joseph A Miragliotta

Spencer A Langevin

Madan Dubey

David B Shrekenhamer

Julia B Patrone

Adam W Freeman

Mark R Gelak

Christopher James Morris

Steven J Apperson

Felix C Sage

Leslie H Hamilton

Matthew A Hagedon

Joshua B Broadwater

Garret T Bonnema

Evan D Jacque

Michael H Jin

Nathan J Fairbanks

Wayne Churaman

Danny Gee

Brian Isaacson

Larry D Thomas, Jr

A layered textile energy storage device can include first and second encasing layers, an anode, a cathode, and a flexible separator layer. The first and second encasing layers can each include a nylon fabric coated with a polyurethane. The anode can include a carbon fabric coated with anode active material, carbon nanotubes, and a binder material. The cathode can include a carbon fabric coated with cathode active material, carbon nanotubes, and a binder material. The flexible separator layer can be disposed between the anode and cathode to prevent internal shorting of the layered textile energy storage device. The anode, the cathode and the flexible separator layer can be disposed between the first and the second encasing layers.

Textile and fiber energy storage and power-generating devices

A wearable sensor system includes a flexible patch, an electronic circuit disposed on the flexible patch, and a disposable sensor disposed on the flexible patch and connected to the electronic circuit via a socket. The disposable sensor detects a chemical compound. The electronic circuit generates a detection signal commensurate with the chemical compound detected by the disposable sensor. The disposable sensor is removably plugged into the socket, thereby permitting replacement of the disposable sensor upon satisfaction of a predetermined condition. A battery disposed is on the flexible patch and connected to the electronic circuit to power the electronic circuit. A transceiver is connected to the electronic circuit, wherein the transceiver transmits the detection signal.

Wearable sensor

An apparatus includes a substrate, a first patterned layer, and a second patterned layer. The first patterned layer may be coupled to the substrate and may have a first metasurface pattern. The second patterned layer disposed separately from the substrate and the first patterned layer, and may have a second metasurface pattern. Movement of the first patterned layer relative to the second patterned layer may be controllable via control circuitry such that a gap distance of a gap between the first patterned layer and the second patterned layer is changed to cause a transmittance for radiant energy of a selected wavelength passing through the apparatus to change from a first transmittance value to a second transmittance value.

Dynamic filter comprising a first and second metasurface for spectral sensing and emitting systems

A reaction characteristic detector comprising a ladder assembly including a plurality of rungs, where each rung in the plurality of rungs comprises a reaction passage determiner spaced a distance from a point of an energetic material reaction initiation. Each reaction passage determiner has at least one characteristic that is configured to change in response to the reaction occurring proximate to the reaction passage determiner.

Energetic material reaction characteristic detector

An acceleration switch array having at least two acceleration switches. Each acceleration switch includes a substrate, an anchor attached to the substrate, an electrically conductive mass disposed around the anchor and secured to the anchor by a spring assembly which permits movement of the mass relative to the anchor, and a plurality of electrical contacts positioned at circumferentially spaced positions around and outwardly from the mass. These electrical contacts are aligned along at least one orthogonal axis. A resistor array is electrically connected between the electric contacts of each acceleration switch for each orthogonal axis so that, upon contact between the mass and any of the electrical contacts, an electrical resistance is presented at an output terminal that is unique for each electrical contact for each acceleration switch.

Three-axis acceleration switch array

An apparatus and method for creating a MEMS directional sensor system capable of determining direction from at least two microphones to a sound source over a wide range of frequencies is disclosed. By utilizing a stiff beam stand-off architecture that relies on a unique manufacturing technique in a MEMS device, such as described herein, a very small set of microphones, on the order of a few micrometers, can be designed with unsurpassed ability to detect a sound source location.

Microscale implementation of a bio-inspired acoustic localization device

Silicon-based explosive devices and methods of manufacture are provided. In this regard, a representative method involves: providing a doped silicon substrate; depositing undoped silicon on a first side of the substrate; and infusing an oxidizer into an area bounded at least in part by the undoped silicon; wherein the undoped silicon limits an exothermic reaction of the doped silicon to the bounded area. Another representative method involves: providing a doped silicon substrate; depositing a masking layer of low-pressure chemical vapor deposited (LPCVD) Silicon nitride to the first side of the substrate; patterning the nitride mask and etching the porous silicon, and infusing oxidizer into an area bounded by the LPCVD nitride; wherein the silicon nitride limits an exothermic reaction of the doped silicon to the bounded area.

Silicon-based explosive devices and methods of manufacture

Growing community of inventors

Columbia, MD, United States of America

Luke J Currano