Topic

PseudoDiversity is a method of recovering the wavefront in a sparse- or segmented-aperture optical system typified by an interferometer or a telescope equipped with an adaptive primary mirror consisting of controllably slightly moveable segments. (PseudoDiversity should not be confused...

A computer program has been written as a tool for developing optical pulse-position-modulation (PPM) receivers in which photodetector outputs are fed to analog-to-digital converters (ADCs) and all subsequent signal processing is performed digitally. The program can be used, for example, to simulate an...

Vesicular stomatitis virus, or VSV, has long been a model system for studying and understanding the life cycle of negative-strand RNA viruses. Research has shown that VSV has the potential to be genetically modified to serve as an anti-cancer agent - exercising high selectivity in killing...

A "metal foam" developed by North Carolina State University researchers could mean a new generation of biomedical implants that would avoid bone rejection that often results from more rigid implant materials, such as titanium. The metal foam is lighter than solid aluminum and can be made...

This week's question concerns the ongoing debate over texting while driving. A research team at Clemson University recently developed an application called VoiceTEXT that allows drivers to speak text messages and keep their eyes on the road at the same time. Drivers using VoiceTEXT can put...

University of Michigan engineers have developed an artificial foot that recycles energy otherwise wasted in between steps, which could make it easier for amputees to walk. A typical prosthesis doesn't reproduce the force a living ankle exerts to push off of the ground. As a result, test subjects...

Using lasers and nanoparticles, Rice University scientists have discovered a new technique for singling out individual diseased cells and destroying them with tiny explosions. The scientists used lasers to make "nanobubbles" by zapping gold nanoparticles inside cells. "Single- cell targeting is one of the...

Electrostrictive ceramic actuators that can function at low temperatures have been developed for controlling the shapes of mirrors in the Next Generation Space Telescope (NGST). On Earth, electrostrictive ceramic actuators may be useful for fine control of the positions of objects in...

A relatively simple thermal technique has been proposed to enable detection of bubbles of gas or bulk gas in a tube that is meant to contain a flowing liquid only. In a system in which gas cannot be tolerated, the technique could be used to trigger a shutoff valve downstream of a location...

Researchers at the University of Tokyo have created a hydrogel that is more than 50 times stronger than comparable squishy self-healing materials. The hydrogel is made up of 95 percent water, making it suitable for applications in the body; it could someday serve as scaffolding for new...

This week's question concerns the wonders and the woes of the American auto industry. With falling sales, the somewhat controversial "cash for clunkers" program, and the spate of bailouts that occurred last year for Detroit's "big three", the industry seems to be due for some...

A method of determining the radio refractivity of the atmosphere as a function of altitude involves processing of data acquired by airborne or mountain-top Global Positioning System (GPS) receivers from particular GPS satellites as those satellites rise above or fall below the horizon....

University of Leeds scientists have developed a portable magnetometer that offers a new level of sensitivity to magnetic fluctuations useful for early detection of a number of conditions, including heart problems in fetuses.

Another day at MD&M West has come and gone, and I'm continuing to see a lot of focus on miniaturization -- which makes sense, considering the multitude of medical applications that could benefit from compact yet efficient devices. The SQUIGGLE motor from New Scale Technologies measures 2.8 x 2.8 x 6 mm. Product...

Day one at the Medical Design & Manufacturing (MD&M) West show in Anaheim, CA was bustling with energy. Nearly everyone I spoke with said that they had found themselves happily busy throughout the day. One nice part about meeting people at trade shows is that you might come across information you would...

This week's question concerns a recent Forbes/AP story that reported on the nominees for the 2010 Nobel Peace Prize. These include a Russian human rights group, a Chinese dissident, and, believe it or not, the Internet. Proposed by the Italian version of Wired magazine, which cited...