Researchers in the US have, for the first time, cloaked a three-dimensional object standing in free space, bringing the much-talked-about invisibility cloak one step closer to reality.
General Physics
Jan 26, 2012
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Researchers at Chalmers University of Technology (Sweden) have for the first time demonstrated a novel subharmonic graphene FET mixer at microwave frequencies. The mixer provides new opportunities in future electronics, as ...
Nanophysics
Jan 3, 2012
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Scientists at the National Physical Laboratory (NPL), the UK's Measurement Institute, have developed an imaging technology which can identify the ripeness of strawberries before they are picked. The developers now hope to ...
Engineering
Oct 19, 2011
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By combining advanced laser technologies in a new way, physicists at the National Institute of Standards and Technology (NIST) have generated microwave signals that are more pure and stable than those from conventional electronic ...
Optics & Photonics
Jun 27, 2011
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(PhysOrg.com) -- Most of the invisibility cloaks that have been demonstrated to date conceal objects at frequencies that are not detectable by the human eye. Designing invisibility cloaks that can conceal objects from visible ...
(PhysOrg.com) -- Like an opera singer hitting a note that shatters a glass, a signal at a particular resonant frequency can concentrate energy in a material and change its properties. And as with 18th century "musical glasses," ...
General Physics
Jun 8, 2011
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(PhysOrg.com) -- If you look closely at the surface of a moth's cornea, you see that it is comprised of tiny protruding bumps. These bumps exist to keep moths safe from predators by preventing light from reflecting in their ...
Engineering
Mar 8, 2011
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Photons in the microwave frequency range are important in quantum research - for quantum information processors, for example. Now, for the first time, researchers have achieved the controlled production of single photons ...
Optics & Photonics
Feb 22, 2011
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Physicists from Rice University and Princeton University have discovered how to use one of the information technology industry's mainstay materials -- gallium arsenide semiconductors -- as an ultrasensitive microwave detector ...
General Physics
Dec 8, 2010
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The explosion of portable communication devices that we enjoy today -- such as cell and smart phones, Bluetooth hands-free units, and wireless Internet networks -- has resulted in part from the development of a wide variety ...
Condensed Matter
Oct 5, 2010
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