Applied Voltage Current Events | Applied Voltage News
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Road to AC voltage standard leads to important junction
After 10 years of research, the National Institute of Standards and Technology (NIST) has unveiled the world's first precision instrument for directly measuring alternating current (AC) voltages. view more (2006-07-24)
Disorder enables extreme sensitivity in piezoelectric materials
A research team working at the National Institute of Standards and Technology (NIST) has found an explanation for the extreme sensitivity to mechanical pressure or voltage of a special class of solid materials called relaxors. view more (2008-05-19)
New design for transistors powered by single electrons
Scientists have demonstrated the first reproducible, controllable silicon transistors that are turned on and off by the motion of individual electrons. view more (2006-02-03)
Electric Nudge toward Self-organization
In search of materials with nonlinear optical properties Window panes and eyeglass lenses that get darker as it gets brighter are especially great in the summer. Their secret lies in optical properties that change as the light intensity changes - nonlinear optical properties. Such materials are also of interest as optoelectronic components. One... view more... (2002-03-07)
Stable power supply thanks to wind turbines
Wind turbines can help keep the voltage in the electricity network at a constant level. The power electronics in the turbines can effectively correct peaks and dips in the mains voltage. This is the conclusion reached by NWO-funded researchers. Modern wind turbines are a good means of coping with fluctuations in the mains voltage. Such... view more... (2001-10-08)
Measuring electrical arcs at the micrometer scale
Air is a great insulator-except when it becomes a conductor. Under the right conditions, miniature lightning bolts of electricity will "arc" through the air between two electrically conducting points. view more (2006-03-31)
Device controls electron spin at room temperature
In a breakthrough for applied physics, North Carolina State University researchers have developed a magnetic semiconductor memory device, using GaMnN thin films, which utilizes both the charge and spin of electrons at room temperature. view more (2009-04-07)
Gatekeeping: Penn researchers find new way to open ion channels in cell membranes
Using an enzyme found in the venom of the brown recluse spider, researchers at the University of Pennsylvania School of Medicine have discovered a new way to open molecular pores, called ion channels, in the membrane of cells. view more (2006-07-18)
Stable silicon layer makes flat-panel display cheaper
In a joint project between the Technology Foundation STW and the energy agency Novem at Utrecht University, researchers have developed new silicon layers which are more stable and cheaper than the present amorphous silicon layers. The electronic properties of the present layers in laptop screens and solar cells deteriorate if the material is under... view more... (2002-03-18)
What Makes The Scorpion`S Sting Deadly Poisonous?
Even the scorpion`s exterior warns that this is a dangerous animal. And it proves to be true, as nothing good comes out when small animals and even human beings meet with this arthropod species: its sting causes a sharp pain, some tropical scorpion`s sting is often fatal for the victim. The scientists from the Moscow Institute for Organoelement... view more... (2002-03-15)
Varnish measures pressure and vibrations
Despite the use of computer simulation, wind tunnel testing is still required to measure pressure changes and airflow speeds on the surfaces of new aircraft and automobile prototypes. Such testing is now done less with smoke visualization and threads but more frequently with high-tech sensors which have the least influence on air flows. Film... view more... (2003-02-20)
Frozen lightning: NIST's new nanoelectronic switch
Researchers at the National Institute of Standards and Technology (NIST) have demonstrated a prototype nanoscale electronic switch that works like lightning—except for the speed. view more (2007-03-05)
High-speed signal mixer demonstrates capabilities of transistor laser
Scientists at the University of Illinois have successfully demonstrated a microwave signal mixer made from a tunnel-junction transistor laser. Development of the device brings researchers a big step closer to higher speed electronics and higher performance electrical and optical integrated circuits. view more (2009-03-20)
New 'control knobs' for stem cells identified
Natural changes in voltage that occur across the membrane of adult human stem cells are a powerful controlling factor in the process by which these stem cells differentiate, according to research published by Tufts University scientists. view more (2008-12-04)
Microbes turn electricity directly to methane without hydrogen generation
A tiny microbe can take electricity and directly convert carbon dioxide and water to methane, producing a portable energy source with a potentially neutral carbon footprint, according to a team of Penn State engineers. view more (2009-03-31)
New 'nano-positioners' may have atomic-scale precision
Engineers have created a tiny motorized positioning device that has twice the dexterity of similar devices being developed for applications that include biological sensors and more compact, powerful computer hard drives. view more (2008-08-21)
Researchers catch ion channels in their opening act
Each thought or action sends a million electrical signals pulsing through your body. At the heart of the process of generating these electrical impulses is the ion channel. view more (2008-07-11)
Molecular spintronic action confirmed in nanostructure
Researchers at the National Institute of Standards and Technology (NIST) have made the first confirmed "spintronic" device incorporating organic molecules, a potentially superior approach for innovative electronics that rely on the spin, and associated magnetic orientation, of electrons. view more (2006-10-13)
Role of noise in neurons
Addressing a current issue in neuroscience, Aldo Faisal and Simon Laughlin from Cambridge University investigate the reliability of thin axons for transmitting information. They show that noise effects in ion channels in the brain are much larger than previously assumed - meaning the fidelity of transmission is compromised. view more (2007-05-04)
Jefferson scientists uncover new clues to how crucial molecular gatekeepers work
One of the biggest mysteries in molecular biology is exactly how ion channels - tiny protein pores through which molecules such as calcium and potassium flow in and out of cells - operate. view more (2005-10-12)
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