Quantcast

Latest Micropower Stories

Motion Converted To Electronic Signals For Tactile Imaging By Piezoelectric 'Taxel' Arrays
2013-04-25 21:27:07

Georgia Institute of Technology Using bundles of vertical zinc oxide nanowires, researchers have fabricated arrays of piezotronic transistors capable of converting mechanical motion directly into electronic controlling signals. The arrays could help give robots a more adaptive sense of touch, provide better security in handwritten signatures and offer new ways for humans to interact with electronic devices. The arrays include more than 8,000 functioning piezotronic transistors, each of...

2012-06-13 14:43:19

The latest episode in the American Chemical Society's (ACS') award-winning Global Challenges/Chemistry Solutions podcast series describes the world's first "electrified snail," which now joins the menagerie of cockroaches, rats, rabbits and other animals previously implanted with biofuel cells that generate electricity – perhaps for future spy cameras, eavesdropping microphones and other electronics – from natural sugar in their bodies. Based on a report by Evgeny Katz, Ph.D.,...

2012-04-11 22:07:01

The world's first "electrified snail" has joined the menagerie of cockroaches, rats, rabbits and other animals previously implanted with biofuel cells that generate electricity – perhaps for future spy cameras, eavesdropping microphones and other electronics – from natural sugar in their bodies. Scientists are describing how their new biofuel cell worked for months in a free-living snail in the Journal of the American Chemical Society. In the report, Evgeny Katz and colleagues...

techpress-082311-001
2011-08-23 16:37:57

  Human gait could soon power portable electronics If the vision of Tom Krupenkin and J. Ashley Taylor comes to fruition, one day soon your cellphone – or just about any other portable electronic device – could be powered by simply taking a walk. In a paper appearing this week (Aug. 23) in the journal Nature Communications, Krupenkin and Taylor, both engineering researchers at the University of Wisconsin-Madison, describe a new energy-harvesting technology that...

8e5301fb9d8019848fa49386c6bbbce01
2010-11-08 15:50:00

Blinking numbers on a liquid-crystal display (LCD) often indicate that a device's clock needs resetting. But in the laboratory of Zhong Lin Wang at Georgia Tech, the blinking number on a small LCD signals the success of a five-year effort to power conventional electronic devices with nanoscale generators that harvest mechanical energy from the environment using an array of tiny nanowires. In this case, the mechanical energy comes from compressing a nanogenerator between two fingers, but it...

832fd4fc1e82b957f1db29d02a839cd8
2010-09-02 11:30:27

Strain-gating Researchers at the Georgia Institute of Technology have developed a new class of electronic logic device in which current is switched by an electric field generated by the application of mechanical strain to zinc oxide nanowires. The devices, which include transistors and diodes, could be used in nanometer-scale robotics, nano-electromechanical systems (NEMS), micro-electromechanical systems (MEMS) and microfluidic devices. The mechanical action used to initiate the strain could...

06c2784f4ee21ef0427251e8d7338d061
2010-03-29 07:20:40

Self-powered nanosensors By combining a new generation of piezoelectric nanogenerators with two types of nanowire sensors, researchers have created what are believed to be the first self-powered nanometer-scale sensing devices that draw power from the conversion of mechanical energy. The new devices can measure the pH of liquids or detect the presence of ultraviolet light using electrical current produced from mechanical energy in the environment. Based on arrays containing as many as 20,000...

2008-11-10 18:00:19

U.S. scientists say they've developed a small-scale generator that produces alternating current by the cyclical stretching and releasing of zinc oxide wires. Georgia Institute of Technology researchers said their so-called "flexible charge pump" generator is the fourth generation of devices designed to produce electrical current by using the piezoelectric properties of zinc oxide structures to harvest mechanical energy from the environment. "The flexible charge pump offers yet another...

de6ca556b266aed51db5d580810313ba1
2008-11-10 09:20:00

Researchers have developed a new type of small-scale electric power generator able to produce alternating current through the cyclical stretching and releasing of zinc oxide wires encapsulated in a flexible plastic substrate with two ends bonded. The new "flexible charge pump" generator is the fourth generation of devices designed to produce electrical current by using the piezoelectric properties of zinc oxide structures to harvest mechanical energy from the environment. Its development was...


Word of the Day
endocarp
  • The hard inner (usually woody) layer of the pericarp of some fruits (as peaches or plums or cherries or olives) that contains the seed.
This word comes from the Greek 'endon,' in, within, plus the Greek 'karpos', fruit.
Related