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Briefs

Sensors/Data Acquisition

Dense Functionalized-Nanowire Biosensor Arrays

Progress has been made in the development of compact sensor arrays containing molecular electronic devices for detecting molecules of interest (especially biomolecules) with high sensitivity and...

Tech Transfer Reports

Compact Chip Architecture Provides High-Speed Image Processing

To quickly distinguish friend from foe or make sense of a visual scene, no machine can beat the human eyes and brain — at least not yet. But a better silicon eye has been built...

Briefs

Electronics & Computers

Nanowire-Based Chemical and Biological Sensor Arrays

Acontinuing effort that supplements and complements the one summarized in the immediately preceding article is dedicated to the development of nanowire-based sensor arrays, with emphasis on maximizing the utility of such arrays for real-time sensing of molecular species associated with...

Briefs

Electronics & Computers

Improved Magnetic Sensor Based on Giant Magneto-Impedance

A low-power, highly stable electronic sensor circuit for measuring a small change in the ambient magnetic field with high sensitivity exploits the giant magneto-impedance (GMI)...

Briefs

Photonics/Optics

Miniature Hyperspectral Sensors for Imaging on Small UAVs

As unmanned vehicles get smaller and smaller, operational expectations and mission objectives demand a much broader array of platform capabilities — a necessity even with reduced...

Briefs

Physical Sciences

Solid-State Viscosity Sensors For Military and Aerospace Applications

Embedded OEM application markets such as the military and aerospace industries are experiencing a growing demand for sensors that provide instantaneous and continuous...

Briefs

Electronics & Computers

Progress in Canted Sector Antennas and Non-Periodic Arrays

Progress has been made in a continuing effort to develop low-geometric-profile, wide-frequency-band microwave antennas intended for incorporation into wide-band aperiodic arrays for...

Briefs

Data Acquisition

Photonic Analog-to-Digital Converters

Early steps have been taken toward the development of analog-to-digital converters (ADCs) that would incorporate photonic quantizers based on the technology of InP semiconductors. These photonic ADCs are...

Briefs

Photonics/Optics

Photonic Analog-to-Digital Converters

Early steps have been taken toward the development of analog-to-digital converters (ADCs) that would incorporate photonic quantizers based on the technology of InP semiconductors. These photonic ADCs are intended to overcome the sampling speed and temporal resolution limitations of state-ofthe- art...

Briefs

Photonics/Optics

Photonic-Crystal-Based Devices for Commercial Applications

Several analog-to-digital converter (ADC) devices and part of a multispectral receiver have been designed, fabricated, and tested to demonstrate their feasibility as part of an...

Briefs

Photonics/Optics

Infrared Data Link Using an MQW Modulator on a Retroreflector

A n infrared data link between a ground station and a small uninhabited helicopter in flight has been demonstrated in an effort to develop a type of system for free-space optical...

Briefs

Materials

Self-Lubrication of Hot YSZ-Ag-Mo Nanocomposite Coatings

An experimental study has been performed to learn about the physical and chemical mechanisms of self-lubrication of coatings that comprise nanostructured composites of...

Briefs

Mechanical & Fluid Systems

Hybrid Three-Axis Vibration Reducers

Hybrid (passive/active) devices have been developed to reduce the magnitudes of possibly threedimensional vibrations coupled from vibrating equipment on platforms to bases that support the platforms....

Briefs

Mechanical & Fluid Systems

Some Advances in Reducing Drag and Suppressing Convection

Theoretical and computational research has yielded some advances in the art of designing active feedforward and feedback controllers to suppress thermal convection and reduce drag (by...

Briefs

Information Technology

Autonomous Vehicles Would Learn by Mimicking Human Drivers

A program initiated by the Defense Advanced Research Projects Agency (DARPA) and now also pursued by other agencies called “Learning Applied to Ground Robots” (LAGR), is...

Briefs

Information Technology

Advances in Algorithms for CFD and Finite-Element Simulation

A program of research and development has resulted in some advances in algorithms for computational fluid dynamics (CFD), finite-element simulation of solid objects undergoing large deformations, and some related topics. The main advances are summarized as follows:

Briefs

Information Technology

Shape-Based Recognition of 3D Objects in 2D Images

An object-recognition algorithm analyzes data from two-dimensional (2D) images to locate and identify possibly complexly shaped three-dimensional (3D) objects in possibly highly cluttered...

Articles

Aerospace

Advanced Training and Simulation Technology Helps Produce Mission-Ready Warfighters

Today's warfighters operate some of the most technologically advanced vehicles, aircraft, and weapons systems, and to do so effectively and safely, they...

Articles

Defense

Perspective - Colonel Lewis F. Setliff III

Colonel Lewis F. Setliff III
Commander/District Engineer, St. Louis District
U.S. Army Corps of Engineers

In August of 2005, Hurricane Katrina hit the Gulf Coast and became one of the...