Antenna engineers are now face increasingly difficult concerns regarding directionality, frequency variations, isolation, and testing. This paper from Emerson & Cuming Microwave Products describes how the use of microwave absorbers and dielectric materials can offer today's antenna engineers solutions to address these challenges.

In a crash, keeping the occupants alive and uninjured is paramount. As a part of the Structural Dynamics Branch in the Research and Technology Directorate at NASA Langley, the Landing and Impact Research Facility (LandIR) tests the safety of aircraft by crashing them. Dr. Karen Jackson is part of the research team.

The turbine blade features a much lighter, more efficient, less expensive, and entirely new structural design. Other advantages offered bythis technology include increased performance, lower noise, decreased maintenance time and expense, and optimized electronic pitch control. View this brief here.

NASA's new Science Mission Directorate Associate Administrator Alan Stern has appointed NASA scientist and 2006 Nobel Prize recipient John Mather to lead the Office of the Chief Scientist at Headquarters in Washington, DC. Mather and his staff will be chief advisors to Stern. Office responsibilities will include assisting the associate...

A recently completed pilot study conducted with the University of Michigan has shown that a Sandia National Laboratories handheld device determined in minutes -- from a tiny sample of saliva -- not only if a patient has gum disease, but how advanced the disease is. Using a disposable lab-on-a-chip cartridge, the device makes use of a...

The Desktop 3D Scanner from NextEngine (Santa Monica, CA) was named NTB's Product of the Month for April. A full-color multi-laser scanner that scans complex shapes for CAD and 3D design applications on the desktop, the scanner is about the size of a cereal box and connects directly to a PC via USB 2.0. It operates with...

NASA has selected 18 Small Business Technology Transfer (STTR) research proposals for Phase 2 contract negotiations. The selected STTR projects have a total value of approximately $11 million, and the contracts will be awarded to 17 small, high-technology firms in 10 states. The goals of the program are to stimulate technological innovation,...

An advanced materials company is seeking new coating technologies that display excellent weathering and durability performance. The coatings will be applied in wet format to glass substrates and need to be optically transparent, have a hardness of at least 2H, and have excellent outdoor durability. To respond to this Tech...

This paper introduces the three levels of data-logging software for use with National Instruments’ DAQ devices -- NI LabVIEW SignalExpress, NI LabVIEW SignalExpress LE, and NI LabVIEW.

This paper introduces the three levels of data-logging software for use with National Instruments’ DAQ devices -- NI LabVIEW SignalExpress, NI LabVIEW SignalExpress LE, and NI LabVIEW. Unique Method for Orifice Production This white paper from Bird Precision explains that in producing accurate, repeatable orifices, all the...

Researchers at the University of Washington (Seattle, WA) have designed prototype sunglasses that darken instantaneously, using electrochromic materials that change transparency depending on the electric currents running through them. The wearer spins a tiny dial on the arm of the glasses to change lens color or...

Each month, NTB highlights tech briefs related to a particular area of technology in a special section known as Technology Focus. Here's an Insider look at the April focus on Sensors. Wearable Environmental and Physiological Sensing Unit Developed at NASA™s Ames Research Center, the wearable environmental and physiological...

A multilayer plastic film is available that meets the specifications required for flexible food packaging. View this technology here.

Engineers at Urban Aeronautics (Yavne, Israel) are developing the prototype X-Hawk Fancraft(TM), a Vertical Take-Off and Landing (VTOL) vehicle whose rotors, unlike a helicopter, are contained in the body of the craft. Originally envisioned as a medical evacuation vehicle, X-Hawk’s modular cargo bay allows for tailor-made,...

Nominations for Nanotech Briefs' third annual Nano 50 awards competition are being accepted through 11:59 PM today, April 2. The awards honor the top 50 innovators, products, and technological advancements that demonstrate the greatest potential toward developing the commercialization of nanotechnology. Previous winners include...

A Fiber Optic-Based Integration System (FOBIS) has been developed that may be capable of in-situ, real-time biological monitoring, and is based on a single fiber optic system. A compact, multi-functional device, the FOBIS incorporates three working units (a Micro-Flow Cytometer, a Micro-Photometer, and a Micro-Sensor)...

University of Illinois scientists have fabricated the world's smallest chain-mail fabric that consists of a network of small rings about 500 microns in diameter and even smaller links about 400 microns long. The rings and links are built upon a planar substrate and then released to create a flexible sheet that can bend along two...