News tagged with evanescent fields
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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First hyperlens for sound waves created
Oct 25, 2009 |
4.7 / 5 (18) |
4
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 ...
Study shows more corn for biofuels would hurt water
Sep 28, 2009 |
4 / 5 (4) |
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(PhysOrg.com) -- More of the fertilizers and pesticides used to grow corn would find their way into nearby water sources if ethanol demands lead to planting more acres in corn, according to a Purdue University study.
Using light to move and trap DNA molecules
Nanotechnology / Bio & Medicine
Jan 02, 2009 |
5 / 5 (8) |
3
(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 ...
With stimulus aid, scientists hope to mimic nature's dynamos
Space & Earth / Earth Sciences
Oct 09, 2009 |
4.5 / 5 (4) |
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(PhysOrg.com) -- In the cosmos, all celestial objects - planets, stars, galaxies and clusters of galaxies - have magnetic fields. On Earth, the magnetic field of our home planet is most easily observed in a compass where ...
Physicists seek to keep next-gen colliders in one piece
Oct 05, 2009 |
4.7 / 5 (6) |
2
(PhysOrg.com) -- Controlling huge electromagnetic forces that have the potential to destroy the next generation of particle accelerators is the subject of a new paper by a University of Manchester physicist.
Researchers create 'synthetic magnetic fields' for neutral atoms
Dec 02, 2009 |
4.9 / 5 (14) |
2
(PhysOrg.com) -- Achieving an important new capability in ultracold atomic gases, researchers at the Joint Quantum Institute, a collaboration of the National Institute of Standards and Technology and the University ...
Snows Of Kilimanjaro shrinking rapidly, and likely to be lost
Space & Earth / Earth Sciences
Nov 02, 2009 |
3.9 / 5 (7) |
3
The remaining ice fields atop famed Mount Kilimanjaro in Tanzania could be gone within two decades and perhaps even sooner, based on the latest survey of the ice fields remaining on the mountain .
New research analyzes the marriage of science and law
Other Sciences / Social Sciences
Oct 21, 2009 |
1 / 5 (1) |
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Distinguished Professor on the Humanities, Cooper Senior Scholar in Arts and Sciences, Professor of Philosophy, Professor of Law Susan Haack has recently published a research paper entitled, "Irreconcilable Differences? The ...
Forces out of nothing
Jan 10, 2008 |
4.7 / 5 (44) |
3
When a machine jams, it’s the fault of the engineer - or of physics. The latter is true at least for the first simple nanomachines which are slowed down by the Casimir effect. This force only works on the ...
Upping the power triggers an ordered helical plasma
Nov 02, 2009 |
5 / 5 (5) |
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If you keep twisting a straight elastic string, at some moment it starts kinking in a wild way. Something similar occurs when one increases the electrical current flowing in a magnetized plasma doughnut: it ...
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