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Latest Frequency Stories

2009-12-08 20:08:31

University of Rochester scientists discover that laser technique used to change the colors of metals could have important implications for medicine University of Rochester optics professor Chunlei Guo made headlines in the past couple of years when he changed the color of everyday metals by scouring their surfaces with precise, high-intensity laser bursts. Suddenly it was possible to make sheets of golden tungsten, or black aluminum. A recent discovery in Guo's lab has shown that, beyond the...

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2009-11-05 10:26:26

Coherent Inc., a world leader in laser technology with headquarters in the USA, and the PTB have joined their expertise in Terahertz technology Terahertz radiation still lies in a metrological no man's land "“ a metrology gap. The Physikalisch-Technische Bundesanstalt (PTB) can now close this gap. For the first time, a commercial Terahertz laser was traced back to the international system of units (SI) by measuring its output power absolutely. PTB achieved this success with a power...

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2009-10-30 08:53:52

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 (NIST) in the United States have built the first optical frequency comb"”a tool for precisely measuring different frequencies of visible light"”that actually looks like a comb. As described in the Oct. 30 issue of Science,* the "teeth" of the new frequency comb are separated enough that when viewed with a...

2009-09-18 13:42:00

TOKYO, Sept. 18 /PRNewswire-FirstCall/ -- Advantest Corporation (TSE: 6857, NYSE: ATE) today announced that it has successfully developed the world's first terahertz wave imaging system, using Advantest's original terahertz wave technology, for nondestructive three dimensional (3D) analysis and inspection. The system is the first product developed within the framework of Advantest's New Concept Product Initiative, launched in March 2009, and is expected to form a cornerstone of the...

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2009-07-01 21:45:00

Who says you can't teach an old dog new tricks?With NSF support, long-time electrical engineer William Stillman talks about his return to school and the focus of his research involving terahertz radiationAfter nearly 25 years as an electrical engineer in semiconductor development and manufacturing, I headed back to school as a trainee with the National Science Foundation's (NSF) Integrative Graduate Education and Research Traineeship (IGERT) program.The focus of my research involves terahertz...

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2009-03-17 08:20:00

By reversing a process that converts electrical signals into sounds heard out of a cell phone, researchers may have a new tool to enhance the way computer chips, LEDs and transistors are built. Lawrence Livermore National Laboratory scientists have for the first time converted the highest frequency sounds into light by reversing a process that converts electrical signals to sound. Commonly used piezo-electric speakers, such as those found in a cell phone, operate at low frequencies that...

2009-03-16 13:05:45

U.S. scientists say they have, for the first time, changed high frequency sounds into light by reversing a process that converts electrical signals to sound. The Lawrence Livermore National Laboratory researchers said their new tool enhances the way computer chips, LEDs and transistors are build. Commonly used piezo-electric speakers, such as those found in a cell phone, operate at low frequencies that human ears can hear, the scientists from LLNL and the Nitronex Corp. said. But by reversing...

2008-09-15 21:00:18

By DONNA GOODISON Music-minded gamers can jam with the newest version of Rock Band beginning today. That's when "Rock Band 2" for the Xbox 360, created by Cambridge's Harmonix Music Systems Inc., hits store shelves. New hooks include battle-of-the-bands tournaments, an online world tour, auto calibration to eliminate TV lag and a real drum trainer. The interactive music game allows up to four people to choose from vocals, guitar, bass and drums and create their own characters in a band...

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2008-04-08 09:10:00

Terahertz waves, which until now have barely found their way out of the laboratory, could soon be in use as a versatile tool. Researchers have mobilized the transmitting and receiving devices so that they can be used anywhere with ease. Everybody knows microwaves "“ but what are terahertz waves? These higher-frequency waves are a real jack-of-all-trades. They can help to detect explosives or drugs without having to open a suitcase or search through items of clothing. They can reveal...


Word of the Day
abrosia
  • Wasting away as a result of abstinence from food.
The word 'abrosia' comes from a Greek roots meaning 'not' and 'eating'.