In what became known as the 'Scotch tape technique," researchers first extracted graphene with a piece of adhesive in 2004. Graphene is a single layer of carbon atoms arranged in a honeycomb, hexagonal pattern. It looks like ...
Nanomaterials
Mar 16, 2012
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A new power scheme for cardiac pacemakers turns to an unlikely source: vibrations from heartbeats themselves.
General Physics
Mar 2, 2012
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(PhysOrg.com) -- Although the idea of harvesting ambient energy from the environment and using it to generate electricity is alluring, most of the technology so far is capable of generating only very small amounts of power ...
(PhysOrg.com) -- Integrating a complex, single-crystal material with "giant" piezoelectric properties onto silicon, University of Wisconsin-Madison engineers and physicists can fabricate low-voltage, near-nanoscale electromechanical ...
Nanomaterials
Nov 17, 2011
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Researchers have used zinc oxide microwires to significantly improve the efficiency at which gallium nitride light-emitting diodes (LED) convert electricity to ultraviolet light. The devices are believed to be the first LEDs ...
Nanophysics
Oct 31, 2011
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Using a technique known as thermochemical nanolithography (TCNL), researchers have developed a new way to fabricate nanometer-scale ferroelectric structures directly on flexible plastic substrates that would be unable to ...
Nanophysics
Jul 18, 2011
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(PhysOrg.com) -- Electrical engineers at the University of Michigan have built a device that can harness energy from vibrations and convert it to electricity with five to ten times greater efficiency and power than other ...
Engineering
Apr 26, 2011
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The generation of an electric field by the compression and expansion of solid materials is known as the piezoelectric effect, and it has a wide range of applications ranging from everyday items such as watches, motion sensors ...
Nanophysics
Aug 23, 2010
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(PhysOrg.com) -- Circuits that can perform logic operations at the push of a button are a dime-a-dozen these days, but a breakthrough by researchers in the USA has meant they can be smaller and simpler than ever before. Using ...
Nanomaterials
Aug 5, 2010
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(PhysOrg.com) -- Murata Manufacturing Co., Ltd., a company based in Kyoto in Japan, has made what they claim to be the world's first ultra-thin (0.9 mm thick) waterproof piezoelectric speaker.
