(Phys.org)—At a time when communication networks are scrambling for ways to transmit more data over limited bandwidth, a type of twisted light wave is gaining new attention. Called an optical vortex or vortex beam, this ...
Optics & Photonics
Jan 8, 2013
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Why are efficient and affordable solar cells so highly coveted? Volume. The amount of solar energy lighting up Earth's land mass every year is nearly 3,000 times the total amount of annual human energy use. But to compete ...
Nanomaterials
Jan 7, 2013
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(Phys.org)—As technology advances, it tends to shrink. From cell phones to laptops—powered by increasingly faster and tinier processors—everything is getting thinner and sleeker. And now light beams are getting smaller, ...
General Physics
Dec 7, 2012
7
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Taking images through opaque, light-scattering layers is a vital capability and essential diagnostic tool in many disciplines, including nanotechnology and the biosciences. Current techniques are unable to image through opaque ...
General Physics
Dec 7, 2012
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(Phys.org)—A microscale technique known as optical trapping uses beams of light as tweezers to hold and manipulate tiny particles. Stanford researchers have found a new way to trap particles smaller than 10 nanometers - ...
Nanophysics
Dec 4, 2012
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A jet of X-rays from a supermassive black hole 12.4 billion light years from Earth has been detected by NASA's Chandra X-ray Observatory. This is the most distant X-ray jet ever observed and gives astronomers a glimpse into ...
Astronomy
Nov 28, 2012
4
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(Phys.org)—New York University physicists have created a tractor beam capable of pulling particles micrometers in size. This so-called optical conveyor tractor beam, reported in the journal Physical Review Letters, has ...
General Physics
Nov 15, 2012
0
1
Scientists at Stanford University have developed an intracellular remote control: a simple way to activate and track proteins, the busiest of cellular machines, using beams of light.
Cell & Microbiology
Nov 8, 2012
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New research published today seeks to push the discovery that light can be tied in knots to the next level.
General Physics
Oct 29, 2012
14
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(Phys.org)—Excitement around the potential for targeted nanoparticles (NPs) that can be controlled by stimulus outside of the body for cancer therapy has been growing over the past few years. More specifically, there has ...
Bio & Medicine
Oct 18, 2012
2
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