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Briefs Electronics & Computers
Use of a Heat Pipe to Cool Aircraft Electronics
The first steps have been taken in a continuing project to study the suitability of dissipating heat from electronic and electric-actuator equipment aboard an aircraft by using a loop heat pipe, containing water as the working fluid, that delivers the heat to the exterior aircraft skin. The first...
Briefs Medical
Update on Implantable Sensors for Metabolic Monitoring
Progress has been made in a continuing effort to develop surgically implantable, biocompatible electrochemical- sensor arrays for continuous measurement of concentrations of analytes that...
Briefs Mechanical & Fluid Systems
MEMS Offset-Beam Torsional Electrothermal Actuators
Prototypes of microelectromechanical system (MEMS) rotational actuators based on a principle of torsion induced by thermal expansion of electrically heated offset beams have been designed,...
Briefs Sensors/Data Acquisition
Fusion of Image- and Inertial-Sensor Data for Navigation
Amethod of real-time fusion of readout data from electronic inertial and image sensors for passive navigation has been developed. By "passive navigation" is meant navigation without the...
Briefs Medical
NO-Generating Coats for Subcutaneous Glucose Sensors
In a research program now in progress, polymeric materials that catalyze the generation of nitric oxide (NO) at low concentrations are being developed and tested for utility as coatings on...
Briefs Physical Sciences
Detecting Explosives by Use of LIBS
Laser-induced breakdown spectros - copy (LIBS) has been investigated for potential utility as a means of detecting trace amounts of chemical explosives and residues thereof in lawenforcement, forensic...
Briefs Electronics & Computers
Design Study of a C-Band Crestatron
A design study of a crestatron that would operate in the frequency range from 3 to 6 GHz (which overlaps with the C band) has been performed. The basic crestatron concept was developed during the 1950s....
Briefs RF & Microwave Electronics
Antenna Electronically Steered Using MEMS Phase Shifters
An experimental phased-array microwave antenna assembly includes an array of eight patch antenna elements connected to Microelectromechanical System (MEMS) phase shifters, by means of...
Briefs RF & Microwave Electronics
Arcing and Vibration Tests of High-Power Patch Antennas
Electric-breakdown and vibration tests were performed on one-patch and two-patch versions of a prototype of a patch antenna designed to radiate a continuous- wave or pulsed signal in the S...
Briefs Mechanical & Fluid Systems
Tethered, Remotely Operated Miniature Submarine
A tethered, remotely operated, armed underwater vehicle has been conceived to satisfy a need for an uninhabited vehicle for Navy missions in which positive identification of targets is needed....
Briefs Physical Sciences
Nanodevices Based on Actin-Filament End-Tracking Motors
In a continuing research project, nanoscale actuators based on actin-filament end- tracking motors have been synthesized and characterized. It is envisioned that such actuators will...
Briefs RF & Microwave Electronics
Implementing a GPS Waveform Under the SCA
A continuing development effort focuses on implementation of a Global Positioning System (GPS) waveform under the Software Communications Architecture (SCA). [As used within the special technological...
Briefs Physical Sciences
Adaptive Deblurring of Noisy Images
An algorithm for adaptive deblurring of images has been designed to be less adversely affected by image noise than are prior deblurring algorithms. The need for this or another noise-tolerant deblurring...
Briefs Materials
Dimensional Stabilization of Composite Space Structures
A research project has yielded progress on several fronts toward the goal of minimizing thermal and aging distortions of composite-material (specifically, polymer- matrix/graphite-fiber)...
Briefs Materials
Gold-Based Nanoparticle Liquids for Electronic Applications
Electrically conductive, solventless nanoparticle liquids, consisting of gold nanoparticles chemically functionalized with large organic molecular groups, have been investigated for...
Briefs Materials
Incorporating Functional Fillers into Silicone Elastomer Systems
Silicones can be developed into fluids, gels, adhesives, elastomers, and resins designed with unique properties that make them ideal for specific application uses in the defense...
Briefs Electronics & Computers
Conjugated Polymers Having High Charge-Carrier Mobilities
A three-year research project encompassed multiple studies of (1) polymer semiconductors that exhibit relatively high electric-charge- carrier mobilities and (2) applications of these...
Briefs Electronics & Computers
Software-Defined Radios for Urban and Indoor Navigation
Software-defined radios (SDRs) are being developed to provide positioning and communication (POSCOMM) services inside buildings and tunnels, under tree canopies, and in other environments...
Briefs Photonics/Optics
Cleaning and Protecting Large Mirrors Using a Polymer Solution
Cleaning and protecting optics is a challenge — contamination must be removed without damaging the surface. Preventing recontamination for extended periods of time after...
Briefs Electronics & Computers
Network-Enabled Resource Devices
Network Enabled Resource Devices (NERDs) combine the most common electronic components used in robotic applications into a standard electronics box with "plug-n-play" capabilities. Risk reduction efforts, systems testing and integration, and modifying the functionality of evolving systems becomes greatly simplified...
Briefs Test & Measurement
Delta-Sigma UHF Digital Waveform Generator
A prototype Digital Waveform Generator (DWG) in the ultra-high-frequency (UHF) range uses Delta-Sigma (Δ−Σ) modulation techniques, which permit arbitrary and accurate waveform...
Briefs Electronics & Computers
Applying Reconfigurable Computing to Acoustic Sensors Using FPGAs
A novel microsensor processing architecture allows a field-programmable gate array (FPGA) to act as a reprogrammable preprocessor or coprocessor to a general-purpose processor...
Briefs Electronics & Computers
FPGA-Based Communication Channel for Digital Signal Processor Chips
A method for networking, and a network of, digital signal processors (DSP) via at least one field-programmable gate array (FPGA) enables the simultaneous broadcast of data from a DSP to a number of DSPs. The apparatus comprises a host DSP, at least one FPGA in communication with...
Briefs Information Technology
Enlightened Multiscale Simulation of Biochemical Networks
A continuing research project is dedicated to development of mathematical and software infrastructure in support of post genomics research in systems biology. One near-term objective of the project is to contribute to deeper understanding of the organizational principles of biological...
Briefs Information Technology
Sensor Validation Using Nonlinear Minor-Component Analysis
Aconcept of sensor validation using nonlinear minor-component analysis (NLMCA) has been proposed as a theoretical basis of a sensor fault-detection-and isolation (FDI) module in a...
Briefs Physical Sciences
Mechanical Aspects of Structural Composite Batteries
In furtherance of the development described in the immediately preceding article, an experimental study focusing on mechanical aspects of structural composite batteries was performed. In this...
Briefs Physical Sciences
Structural Composite Batteries
A continuing program of research and development is devoted to the design, fabrication, and testing of polymeric composite- material devices that are multifunctional in the sense that they both store...
Briefs Physical Sciences
Advances Toward Development of "Smart Dust" Biosensors
Progress has been made toward meeting several technical challenges in a continuing effort to develop “smart dust” sensors for remote detection of chemical and biological agents. Until...
Briefs Medical
Progress Toward Cell-Directed Assembly of Nanostructures
During 2007, progress was made on several fronts in a research program oriented toward developing capabilities for biocompatible and biomimetic self-assembly of nanostructures that could...
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