Special Coverage

Supercomputer Cooling System Uses Refrigerant to Replace Water
Computer Chips Calculate and Store in an Integrated Unit
Electron-to-Photon Communication for Quantum Computing
Mechanoresponsive Healing Polymers
Variable Permeability Magnetometer Systems and Methods for Aerospace Applications
Evaluation Standard for Robotic Research
Small Robot Has Outstanding Vertical Agility
Smart Optical Material Characterization System and Method
Lightweight, Flexible Thermal Protection System for Fire Protection

Substance with High Affinity for Large Antigen Molecules

A company seeks a process of making high-affinity antibodies (or other substances) that can bind rapidly to antigens of large molecular sizes, such as proteins. Achieving high-affinity binding is important for expanding detection limits and achieving diagnostics in short amounts of time. This need is for a highly sensitive, high-affinity antibody or process of designing and making a substance that works as well as antibodies in having a high affinity to a given analyte, and a high speed of binding. Respond to this TechNeed at: Email: nasatech@yet2.com Phone: 781-972-0600

Posted in: NASA Tech Needs


Using Piezoelectric Devices To Transmit Power Through Walls

It would not be necessary to make holes in walls for wires. A method denoted wireless acoustic- electric feedthrough (WAEF) has been conceived for transmitting power and/or data signals through walls or other solid objects made of a variety of elastic materials that could be electrically conductive or nonconductive. WAEF would make it unnecessary to use wires, optical fibers, tubes, or other discrete wall-penetrating signal-transmitting components, thereby eliminating the potential for structural weakening or leakage at such penetrations. Avoidance of such penetrations could be essential in some applications in which maintenance of pressure, vacuum, or chemical or biological isolation is required.

Posted in: Briefs, Mechanical Components, Mechanics, Wireless communication systems, Vibration, Radiation


Dr. David Morrison, Senior Scientist, NASA Astrobiology Institute

NASA Ames Research Center, Moffett Field, CA Dr. David Morrison is senior scientist at the NASA Astrobiology Institute and a founder of the multidisciplinary field of astrobiology. He is an expert on the risk of asteroid impacts and potential ways to mitigate that risk.

Posted in: Who's Who


Apparatus for Sampling Surface Contamination

Liquid suspensions of samples can be dispensed systematically into analytical instruments. An apparatus denoted a swab device has been developed as a convenient means of acquiring samples of contaminants from surfaces and suspending the samples in liquids. (Thereafter, the liquids can be dispensed, in controlled volumes, into scientific instruments for analysis of the contaminants.) The swab device is designed so as not to introduce additional contamination and to facilitate, simplify, and systematize the dispensing of controlled volumes of liquid into analytical instruments.

Posted in: Briefs, Bio-Medical, Medical, Nozzles, Pistons, Test equipment and instrumentation


Novel Species of Non-Spore-Forming Bacteria

One new bacterial species was discovered in a regenerative enclosed life-support module air system. While cataloging cultivatable microbes from the airborne biological diversity of the atmosphere of the Regenerative Enclosed life-support Module Simulator (REMS) system at Marshall Space Flight Center, two strains that belong to one novel bacterial species were isolated. Based on 16S rRNA gene sequencing and the unique morphology and the taxonomic characteristics of these strains, it is shown that they belong to the family Intrasporangiaceae, related to the genus Tetrasphaera, with phylogenetic distances from any validly described species of the genus Tetrasphaera ranging from 96.71 to 97.76 percent.

Posted in: Briefs, Bio-Medical, Medical, Scale models, Bacteria, Life support systems


Chamber for Aerosol Deposition of Bioparticles

Standard coupons can be covered with reproducible areal concentrations of bioparticles. The laboratory apparatus shown in the figure is a chamber for aerosol deposition of bioparticles on surfaces of test coupons. It is designed for primary use in inoculating both flat and three-dimensional objects with approximately reproducible, uniform dispersions of bacterial spores of the genus Bacillus so that the objects could be used as standards for removal of the spores by quantitative surface sampling and/or cleaning processes. The apparatus is also designed for deposition of particles other than bacterial spores, including fungal spores, viruses, bacteriophages, and standard micron-sized beads. The novelty of the apparatus lies in the combination of a controllable nebulization system with a settling chamber large enough to contain a significant number of test coupons. Several companies market other nebulizer systems, but none are known to include chambers for deposition of bioparticles to mimic the natural fallout of bioparticles.

Posted in: Briefs, TSP, Bio-Medical, Medical, Bacteria, Biomaterials, Test equipment and instrumentation


Hyperspectral Sun Photometer for Atmospheric Characterization and Vicarious Calibrations

Data acquired by such devices are used in atmospheric, pollution, and solar energy studies. A hyperspectral sun photometer and associated methods have been developed and demonstrated. Sun photometers are used to measure total (global), direct, and diffuse at-surface solar irradiance. The data acquired by sun photometers are used in atmospheric, pollution, and solar energy studies. In addition, the data acquired by sun photometers are used for radiometric vicarious calibration of optical remote-sensing systems. Sun photometer measurements at various wavelengths can be analyzed to estimate molecular scattering, aerosol extinction, and columnar concentrations of water vapor, ozone, and trace gases in the atmosphere.

Posted in: Briefs, Physical Sciences, Measurements, Fiber optics, Sun and solar, Product development


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