News tagged with light signals
Physicists store short movies in an atomic vapor
The storage of light-encoded messages on film and compact disks and as holograms is ubiquitous---grocery scanners, Netflix disks, credit-card images are just a few examples. And now light signals can be stored ...
May 29, 2012 |
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Researchers discover new quantum encryption method to foil hackers
A research team led by University of Toronto Professor Hoi-Kwong Lo has found a new quantum encryption method to foil even the most sophisticated hackers. The discovery is outlined in the latest issue of Physical Review Le ...
Apr 02, 2012 |
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A single cell endoscope: Researchers use nanophotonics for optical look inside living cells
(PhysOrg.com) -- An endoscope that can provide high-resolution optical images of the interior of a single living cell, or precisely deliver genes, proteins, therapeutic drugs or other cargo without injuring ...
Dec 20, 2011 |
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'Microring' device could aid in future optical technologies
(PhysOrg.com) -- Researchers at Purdue University and the National Institute of Standards and Technology (NIST) have created a device small enough to fit on a computer chip that converts continuous laser light ...
Oct 19, 2011 |
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Nanoscale waveguide for future photonics
The creation of a new quasiparticle called the "hybrid plasmon polariton" may throw open the doors to integrated photonic circuits and optical computing for the 21st century. Researchers with the U.S. Department ...
May 31, 2011 |
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Engineers grow nanolasers on silicon, pave way for on-chip photonics
Engineers at the University of California, Berkeley, have found a way to grow nanolasers directly onto a silicon surface, an achievement that could lead to a new class of faster, more efficient microprocessors, ...
Feb 06, 2011 |
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Taking the twinkle out of the night sky
If you are like most people, you probably enjoy the twinkling of stars that blanket the sky on a clear summer night. If you are an astronomer, chances are you find it extremely annoying.
Aug 04, 2010 |
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An Internet 100 times as fast: A new network design could boost capacity
(PhysOrg.com) -- The heart of the Internet is a network of high-capacity optical fibers that spans continents. But while optical signals transmit information much more efficiently than electrical signals, ...
Technology / Computer Sciences
Jun 28, 2010 |
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Compressing photonic signals for greater bandwidth
Cornell researchers have developed an ingenious method to time-compress optical signals. The process could enable optical communication systems to carry many more bits per second or could also be used to generate ...
Nov 03, 2009 |
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New nanolaser -- spaser -- key to future optical computers and technologies
(PhysOrg.com) -- Because the new device, called a "spaser," is the first of its kind to emit visible light, it represents a critical component for possible future technologies based on "nanophotonic" circuitry, ...
Aug 16, 2009 |
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Ghost remains after black hole eruption
NASA's Chandra X-ray Observatory has found a cosmic "ghost" lurking around a distant supermassive black hole. This is the first detection of such a high-energy apparition, and scientists think it is evidence ...
May 28, 2009 |
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Bright lights, not-so-big pupils
A team of Johns Hopkins neuroscientists has worked out how some newly discovered light sensors in the eye detect light and communicate with the brain. The report appears online this week in Nature.
Medicine & Health / Medical research
Dec 31, 2008 |
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Biochip-based device for cell analysis
(Phys.org) -- Inexpensive, portable devices that can rapidly screen cells for leukemia or HIV may soon be possible thanks to a chip that can produce three-dimensional focusing of a stream of cells, according ...
Chemistry / Analytical Chemistry
May 30, 2012 |
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Record-breaking radio waves discovered from ultra-cool star
Penn State University astronomers using the world's largest radio telescope, at Arecibo, Puerto Rico, have discovered flaring radio emission from an ultra-cool star, not much warmer than the planet Jupiter, ...
Apr 30, 2012 |
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Astronomers detect coolest radio star
(Phys.org) -- Astronomers using the world's largest radio telescope, at Arecibo, Puerto Rico, have discovered flaring radio emission from an ultra-cool star, not much warmer than the planet Jupiter, shattering the previous ...
Apr 18, 2012 |
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