News tagged with frequency
Explained: The Discrete Fourier Transform
Nov 25, 2009 |
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(PhysOrg.com) -- In 1811, Joseph Fourier, the 43-year-old prefect of the French district of Isčre, entered a competition in heat research sponsored by the French Academy of Sciences. The paper he submitted ...
Intelligence inside metal components
Nov 24, 2009 |
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Up to now, extreme production temperatures made it impossible to equip metallic components with RFID chips during the operating process. At Euromold in Frankfurt (Dec. 2-5), Germany, Fraunhofer researchers ...
Microwave Meter Measures Moisture and Density of In-Shell Peanuts
Nov 20, 2009 |
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(PhysOrg.com) -- A microwave meter that instantaneously measures both moisture and density of in-shell peanuts has been developed by Agricultural Research Service (ARS) scientists, making it easier and faster ...
A Tiny Cage of Gold Responds to Light, Opening to Empty Its Contents
Nanotechnology / Bio & Medicine
Nov 19, 2009 |
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(PhysOrg.com) -- Researchers at Washington University in St. Louis have developed a polymer-coated gold nanocage that not only opens in response to light to release a small amount of a drug payload, but then closes when the ...
Building the smart home wirelessly
Nov 19, 2009 |
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Like the paperless office, the smart home has been a long time coming, but a report published in the International Journal of Internet Protocol Technology, suggests that radio tags coupled with mobile communications device ...
'Fingerprinting' RFID Tags: Researchers Develop Anti-Counterfeiting Technology
Nov 19, 2009 |
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(PhysOrg.com) -- Engineering researchers at the University of Arkansas have developed a unique and robust method to prevent cloning of passive radio frequency identification tags. The technology, based on one or more unique ...
Scientists Build First 'Frequency Comb' To Display Visible 'Teeth'
Oct 29, 2009 |
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(PhysOrg.com) -- Finally, an optical frequency comb that visibly lives up to its name. Scientists at the University of Konstanz in Germany and the National Institute of Standards and Technology in the U.S. ...
SEMATECH Reports New Approach to Simulate Transistor Noise
Oct 27, 2009 |
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Researchers from SEMATECH's Front End Processes (FEP) program have developed a comprehensive transistor noise model capable of extracting defect characteristics from low frequency noise data in advanced gate stack transistors ...
Xerox Develops Silver Ink for Cheap Printable Electronics
Oct 27, 2009 |
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(PhysOrg.com) -- Xerox has developed an ink which can be used to print circuits onto plastics, films, and textiles. Although circuits printed on flexible materials aren't new, Xerox's method may be cheap and ...
WHO study suggests link between cell phones and tumors
Oct 27, 2009 |
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(PhysOrg.com) -- Preliminary results of an International investigation by the World Health Organization (WHO) suggest there may be a "significantly increased risk" of some types of brain tumors after use of ...
First hyperlens for sound waves created
Oct 25, 2009 |
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Ultrasound and underwater sonar devices could "see" a big improvement thanks to development of the world's first acoustic hyperlens. Created by researchers with the U.S. Department of Energy's Lawrence Berkeley ...
Physicists Turn to Radio Dial for Finer Atomic Matchmaking
Oct 20, 2009 |
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(PhysOrg.com) -- Investigating mysterious data in ultracold gases of rubidium atoms, scientists at the Joint Quantum Institute of the National Institute of Standards and Technology and the University of Maryland ...
Smallest nanoantennas for high-speed data networks
Oct 20, 2009 |
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More than 120 years after the discovery of the electromagnetic character of radio waves by Heinrich Hertz, wireless data transmission dominates information technology. Higher and higher radio frequencies are ...
GTRI is developing protocols for testing effects of RFID systems on medical devices
Oct 06, 2009 |
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Radio frequency identification (RFID) systems are widely used for applications that include inventory management, package tracking, toll collection, passport identification and airport luggage security. More ...
Sony develops highly efficient wireless power transfer system based on magnetic resonance
Oct 02, 2009 |
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Sony Corp. today announced the development of a highly efficient wireless power transfer system that eliminates the use of power cables from electronic products such as television sets. Using this system, ...
