News tagged with evanescent waves
Novel Superlens Offers a Simplified Subwavelength Imaging Technique
May 11, 2009 |
4.3 / 5 (16) |
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(PhysOrg.com) -- Since the first demonstrations of subwavelength imaging just a few years ago, scientists have been making great improvements, developing a variety of new methods for realizing high-resolution imaging. Recently, ...
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Taming tiny, unruly waves for nano optics
Oct 08, 2007 |
4.3 / 5 (26) |
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Nanoscale devices present a unique challenge to any optical technology -- there’s just not enough room for light to travel in a straight line.
First hyperlens for sound waves created
Oct 25, 2009 |
4.7 / 5 (18) |
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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 ...
Goal of nanoscale optical imaging gets boost with new hyperlens
Mar 22, 2007 |
4.6 / 5 (44) |
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Scientists at the University of California, Berkeley, have developed a "hyperlens" that brings them one major step closer to the goal of nanoscale optical imaging. The new hyperlens, described in the Feb. 23 ...
Disorder helps to 'hyperfocus' waves in time reversal acoustics
Physics /
Mar 24, 2006 |
4.8 / 5 (61) |
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For every burst of sound, there must exist a sound that bursts in reverse, according to the theory of time reversal acoustics. From their discoveries of some surprising characteristics of mediums and frequencies, ...
A sub-femtosecond stop watch for 'photon finish' races
Mar 13, 2008 |
4.6 / 5 (17) |
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Using a system that can compare the travel times of two photons with sub-femtosecond precision, scientists at the Joint Quantum Institute (a partnership of the National Institute of Standards and Technology ...
Making monster waves
Oct 19, 2009 |
4.5 / 5 (6) |
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Rogue waves -- giant waves that spring up suddenly and tower over the seas around them—have inspired physicists to look for an analogue in light. These high-intensity pulses can cross large distances without ...
Using light to move and trap DNA molecules
Nanotechnology / Bio & Medicine
Jan 02, 2009 |
5 / 5 (8) |
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(PhysOrg.com) -- A major goal of nanotechnology research is to create a "lab on a chip," in which a tiny biological sample would be carried through microscopic channels for processing. This could make possible ...
Research pinpoints conditions favorable for freak waves
Aug 24, 2009 |
3.6 / 5 (5) |
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(PhysOrg.com) -- Stories of ships mysteriously sent to watery graves by sudden, giant waves have long puzzled scientists and sailors. New research by Assistant Professor of Geosciences Tim Janssen suggests ...
Galaxy-Sized Observatory for Gravitational Waves
Sep 17, 2009 |
4.2 / 5 (13) |
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(PhysOrg.com) -- Astronomers are making plans to create a galaxy-sized observatory to look for gravitational waves. The project is part of a joint effort with astronomers from Australia and Europe, who also ...
New superlens opens door to nanoscale optical imaging and high-density optoelectronic devices
Apr 21, 2005 |
3.9 / 5 (8) |
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A group of scientists at the University of California, Berkeley, is giving new relevance to the term "sharper image" by creating a superlens that can overcome a limitation in physics that has historically ...
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