ScienceDaily Technology Headlines
for Saturday, September 4, 2010
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Chemists, engineers achieve world record with high-speed graphene transistors (September 3, 2010) -- Researchers have developed a new fabrication process for high-speed graphene transistors using a nanowire as the self-aligned gate. This new technique does not produce any appreciable defects in the graphene during fabrication, so the carrier mobility is retained. Also, by using a self-aligned approach with a nanowire as the gate, the group was able to overcome alignment difficulties previously encountered and fabricate short channel devices with unprecedented performance. ... > full story
Computer technique could help partially sighted 'see' better (September 3, 2010) -- Thousands of people who are partially sighted following stroke or brain injury could gain greater independence from a simple, cheap and accessible training course which could eventually be delivered from their mobile phones or hand-held games consoles, according to a new study. ... > full story
Miniature auto differential helps tiny aerial robots stay aloft (September 3, 2010) -- Engineers have created a millionth-scale automobile differential to govern the flight of minuscule aerial robots that could someday be used to probe environmental hazards, forest fires, and other places too perilous for people. Their new approach is the first to passively balance the aerodynamic forces encountered by these miniature flying devices, letting their wings flap asymmetrically in response to gusts of wind, wing damage, and other real-world impediments. ... > full story
Experiment records ultrafast chemical reaction with vibrational echoes (September 3, 2010) -- To watch a magician transform a vase of flowers into a rabbit, it's best to have a front-row seat. Likewise, for chemical transformations in solution, the best view belongs to the molecular spectators closest to the action. Those special molecules comprise the "first solvation shell," and although it has been known for decades that they can sense and dictate the fate of nearly every chemical reaction, it has been virtually impossible to watch them respond -- until now. ... > full story
Laser-based missile defense for helicopters being developed (September 3, 2010) -- Protecting helicopters in combat from heat-seeking missiles is the goal of new laser technology. ... > full story
Chemists develop simple technique to visualize atomic-scale structures (September 3, 2010) -- Researchers have devised a new technique -- using a sheet of carbon just one atom thick -- to visualize the structure of molecules. The technique, which was used to obtain the first direct images of how water coats surfaces at room temperature, can also be used to image a potentially unlimited number of other molecules, including antibodies and other biomolecules. ... > full story
Scientists listen to faint sounds inside insects using atomic force microscopy (September 3, 2010) -- Scientists are using atomic force microscopy to record sounds emanating from inside living insects like flies, mosquitoes and ladybugs. ... > full story
Researchers discover proton diode: Water is an active element in proteins (September 3, 2010) -- Biophysicists in Germany have discovered a diode for protons: just like the electronic component determines the direction of flow of electric current, the “proton diode” ensures that protons can only pass through a cell membrane in one direction. Water molecules play an important role here as active components of the diode. The researchers were able to observe this through a combination of molecular biology, X-ray crystallography, time-resolved FTIR spectroscopy and biomolecular simulations. ... > full story
Molecules involved in 'touch' identified: Could lead to new treatments for pain, deafness and cardiac function (September 3, 2010) -- Scientists have identified two proteins with potential to be important targets for research into a wide range of health problems, including pain, deafness, and cardiac and kidney dysfunction. ... > full story
The perfect nanocube: Precise control of size, shape and composition (September 3, 2010) -- Researchers have developed a simple process for producing near-perfect nanocrystals that will enable studies of physical and chemical properties that affect how nanoparticles interact with the world around them. ... > full story
Model for implantable artificial kidney to replace dialysis unveiled (September 3, 2010) -- Researchers have unveiled a prototype model of the first implantable artificial kidney, in a development that one day could eliminate the need for dialysis. ... > full story
Edible nanostructures: Compounds made from renewable materials could be used for gas storage, food technologies (September 3, 2010) -- Sugar, salt, alcohol and a little serendipity led researchers to discover a new class of nanostructures that could be used for gas storage and food and medical technologies. And the compounds are edible. The porous crystals are the first known all-natural metal-organic frameworks (MOFs) that are simple to make. Most other MOFs are made from petroleum-based ingredients, but the new MOFs you can pop into your mouth and eat, and the researchers have. ... > full story
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