ScienceDaily: Top Technology News |
- Taking the 3-D measure of macromolecules
- Noninvasive brain implant could someday translate thoughts into movement
- Mercury: Messenger orbital data confirm theories, reveal surprises
- Metallic glass: A crystal at heart
- Black hole kills star and blasts 3.8 billion light year beam at Earth
- Gamma-ray flash came from star being eaten by massive black hole
- Comet Hartley 2 in hyperactive class of its own: CO<sub>2</sub> jets confirmed, new insight into composition, 'excited' rotation
- Spectacular Hubble view of Centaurus A
- Stretchable electronics: Wireless sensor measures and inputs intense body movements to computer
- Neutrons, simulations reveal details of molecule that complicates next-generation biofuels
- Chirality: New method to consistently make left-handed or right-handed molecules
- Quantum cryptography: Perfect eavesdropper illustrates overlooked loophole in secure communications technology
- Miniature power plants for aircraft bodies
| Taking the 3-D measure of macromolecules Posted: 16 Jun 2011 04:37 PM PDT Researchers have developed the world's first three-dimensional plasmon rulers, capable of measuring nanometer-scale spatial changes in macromolecular systems. These 3-D plasmon rulers could provide unprecedented details on such critical dynamic events in biology as the interaction of DNA with enzymes, the folding of proteins, the motion of peptides or the vibrations of cell membranes.  |
| Noninvasive brain implant could someday translate thoughts into movement Posted: 16 Jun 2011 04:36 PM PDT A brain implant developed at the University of Michigan uses the body's skin like a conductor to wirelessly transmit the brain's neural signals to control a computer, and may eventually be used to reactivate paralyzed limbs.  |
| Mercury: Messenger orbital data confirm theories, reveal surprises Posted: 16 Jun 2011 11:27 AM PDT In March, the Messenger spacecraft entered orbit around Mercury to become that planet's first orbiter. The tiny craft is providing a wealth of new information and some surprises. For instance, Mercury's surface composition differs from that expected for the innermost of the terrestrial planets, and Mercury's magnetic field has a north-south asymmetry that affects the interaction of the surface with charged particles from the solar wind.  |
| Metallic glass: A crystal at heart Posted: 16 Jun 2011 11:27 AM PDT Glass, by definition, is amorphous. But when scientists squeezed tiny samples of a metallic glass under high pressure, they got a surprise: The atoms lined up in a regular pattern to form a single crystal. The discovery offers a new window into the structure and behavior of metallic glasses, which have been used for decades in products such as anti-theft tags and power transformers but are still poorly understood.  |
| Black hole kills star and blasts 3.8 billion light year beam at Earth Posted: 16 Jun 2011 11:27 AM PDT The flash from one of the biggest and brightest bangs yet recorded by astronomers comes from a massive black hole at the center of a distant galaxy, new research shows. The black hole appears to have ripped apart a star that wandered too close, creating a powerful beam of energy that crossed the 3.8 billion light years to Earth.  |
| Gamma-ray flash came from star being eaten by massive black hole Posted: 16 Jun 2011 11:27 AM PDT A bright flash of gamma rays observed March 28 by the Swift satellite signaled the death of a star falling into a massive black hole, say a team of astronomers. According to their model, a star the mass of our sun got too close and was ripped apart; one-tenth of the mass was emitted as X-rays and gamma rays, much of it in a collimated jet aimed at Earth.  |
| Posted: 16 Jun 2011 11:27 AM PDT Comet Hartley 2 is in a hyperactive class of its own compared to other comets visited by spacecraft, says a new study. New, in-depth analysis of the images and data taken during the flyby of the comet last fall by NASA's Deep Impact spacecraft confirms that carbon dioxide is the volatile fuel for Hartley 2's ice-spewing jets and provides new twists in the unfolding story of this small, but dynamic comet.  |
| Spectacular Hubble view of Centaurus A Posted: 16 Jun 2011 06:26 AM PDT The NASA/ESA Hubble Space Telescope has produced a close-up view of the galaxy Centaurus A. Hubble's out-of-this-world location and world-class Wide Field Camera 3 instrument reveal a dramatic picture of a dynamic galaxy in flux.  |
| Stretchable electronics: Wireless sensor measures and inputs intense body movements to computer Posted: 16 Jun 2011 06:25 AM PDT Electronics that can be bent and stretched might sound like science fiction. But scientists have devised a wireless sensor that can stand to be stretched. For example, the sensor can measure intensive body movements and wirelessly send information directly to a computer.  |
| Neutrons, simulations reveal details of molecule that complicates next-generation biofuels Posted: 15 Jun 2011 01:18 PM PDT A first-of-its-kind combination of experiment and simulation at the U.S. Department of Energy's Oak Ridge National Laboratory is providing a close-up look at the molecule that complicates next-generation biofuels. Lignin, a major component of plant cell walls, aggregates to form clumps, which cause problems during the production of cellulosic ethanol. The exact shape and structure of the aggregates, however, have remained largely unknown. Researchers have revealed the surface structure of lignin aggregates down to 1 angstrom -- the equivalent of a 10 billionth of a meter or smaller than the width of a carbon atom.  |
| Chirality: New method to consistently make left-handed or right-handed molecules Posted: 14 Jun 2011 09:22 AM PDT Many organic molecules are non-superimposable with their mirror image. The two forms of such a molecule are called enantiomers and can have different properties in biological systems. The problem is to control which enantiomer you want to produce -- a problem that has proved to be important in the pharmaceutical industry. Researchers have now come up with a new method to control the process.  |
| Posted: 14 Jun 2011 08:50 AM PDT Quantum key distribution (QKD) is a tool to provide confidential communication between two remote parties. QKD is perfectly secure in principle, but researchers have long been aware that loopholes may arise when QKD is put into practice. Now, for the first time, researchers have implemented a "perfect eavesdropper" that exploits just such a loophole. The results highlight the importance of identifying imperfections in the implementation of QKD as a step towards fixing them.  |
| Miniature power plants for aircraft bodies Posted: 14 Jun 2011 06:57 AM PDT Sensor networks are supposed to pervade the body shell of airplanes in the future – much like a nervous system. And, newly developed sensors do not require any external power supply.  |
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