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Scientific News
Scientific News Communication

  ALCHEMY WITH LIGHT
YOU don’t often see claims of "unexpected and stunning new physical phenomena" in the abstract of a reputable scientific paper. But the latest report by photonics crystal pioneer John Joannopoulos and his group at MIT, soon to be published in Physical Review Letters, does not disappoint. The researchers document the ultimate control over light: a way to shift the frequency of light beams to any desired colour, with near 100 per cent efficiency.

  SPIDERS WEAVE A WEB OF LIGHT
WHAT do you get if you give a delicate thread of spider’s silk a glassy coating- and then extract the silk by baking? Yushan Yan reckons you will solve a major problem in photonics: how to make ultra-thin, hollow optical fibres narrow enough to carry light beams around the fastest nanoscale optical circuits. Using this technique, Yan and a team of engineers from the University of California at Riverside say they soon expect to be able to make hollow fibres with cores just 2 nanometres wide- or 50,000 times thinner than a human hair.

  OPTICAL ANTENNA BRINGS BENEFITS TO WIRELESS NETWORKS, HOUSEHOLD ELECTRONICS AND DATA TRANSFER
A new optical antenna, developed by researchers at the University of Warwick, will bring significant benefits to credit card payments, wireless networks, household electronics and longer distance data transfer.

  NEW TECHNIQUE TRANSMITS DATA AT 2.8 GIGABITS PER SECOND
A test conducted by two Chicago computer scientists to push trans-Atlantic high-speed data transmission has resulted in a new top speed of 2.8 gigabits (billion bits) per second.

  HIDING IN THE NOISE AND CHAOS
A new and novel way of communicating over fiber optics is being developed by physicists supported by the Office of Naval Research. Rather than using the amplitude and frequency of electromagnetic waves, they’re using the polarization of the wave to carry the signal. Such a method offers a novel and elegant method of secure communication over fiber optic lines.

  CAN’T HEAR THE CONVERSATION FOR THE TREES
Gum trees are causing headaches for mobile phone providers in rural areas because they interfere with the signal, a telecommunications company announced this week. Country Wide, Telstra’s rural arm which recently celebrated its second year, has found that groves of trees break mobile telephone signals.

  DEVICE COULD MAKE FOR FASTER INTERNET, BETTER TELECOMMUNICATIONS
Whether you’re waiting for a computer to download the latest movie trailer, or just holding for a long-distance phone call to connect, you may one day get faster service as the result of a new device invented by Ohio State University engineers.

  COMPUTERS CLOSER TO THE SPEED OF LIGHT
Australian scientists have used their expertise in solar cells to develop a more efficient silicon light-emitting diode, providing a new platform for faster computing and data transfer. The development, reported in 23 August 2001 Nature by Martin A. Green and colleagues at the University of New South Wales, will mean microelectronics can take better advantage of the speed of optical data transfer.

  OPTIC FIBRE PROVIDES VAST CAPACITY FOR TRANSMITTING INFORMATION BUT IT’S NOT UNLIMITED
Researchers have established the theoretical limit to the information-carrying capacity of optic fibres. In the insatiable quest for greater "bandwidth", the finding is important.

  THREE MAJOR LABS JOIN FORCES TO DEVELOP FASTER SEMICONDUCTORS
Scientists at Oak Ridge National Laboratory (ORNL), Motorola Labs, and Pacific Northwest National Laboratory (PNNL) have entered a cooperative research and development agreement (CRADA) aimed at increasing the speed of future generations of integrated circuits.

  DEVICE OFFERS PROMISE FOR FASTER OPTICAL COMMUNICATIONS
WEST LAFAYETTE, Ind. Purdue University engineers have discovered that a device commonly used to untangle signals sent over fiber optic lines might ultimately be used to make the Internet faster and more powerful.


 

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