(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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(Phys.org)—An international, Harvard-led team of researchers have demonstrated a new type of light beam that propagates without spreading outwards, remaining very narrow and controlled along an unprecedented distance. This ...
Optics & Photonics
Sep 7, 2012
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John Federici, a physics professor at NJIT, sees the use of terahertz rays as a critical technology in the defense against suicide bombers and other terrorist activities. Federici and his research team recently described ...
Optics & Photonics
Apr 12, 2010
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Researchers have reported the first 3D measurements acquired with quantum ghost imaging. The new technique enables 3D imaging on a single photon level, yielding the lowest photon dose possible for any measurement.
Optics & Photonics
Aug 8, 2023
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Researchers have developed an adaptive liquid lens based on a new electrically responsive fluid called dibutyl adipate (DBA) that changes focal length when a voltage is applied. The lens is lightweight, compact and simple ...
Optics & Photonics
Jan 19, 2022
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(PhysOrg.com) -- Looking at photos on a cellphone display can be somewhat arduous. A new mini beamer will make it easier. The beamer is so small that it can be integrated in a cellphone or a PDA. As it does not need an extra ...
Engineering
Jun 2, 2009
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Chinese researchers, reporting in the Journal of Applied Physics, published by the American Institute of Physics, have described a new breakthrough in understanding the way electrons travel around quantum dots. This might ...
Nanophysics
Oct 20, 2010
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With the advent of nanometer-sized machines, there is considerable demand for stable, precise tools to measure absolute distances and distance changes. One way to do this is with a plasmon ruler. In physics jargon, a "plasmon" ...
Nanophysics
Aug 31, 2010
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(Phys.org) —A group of researchers at the California Institute of Technology (Caltech) has created the optical equivalent of a tuning fork—a device that can help steady the electrical currents needed to power high-end ...
General Physics
Sep 26, 2013
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Imagine navigating through a grocery store with your cell phone. As you turn down the bread aisle, ads and coupons for hot dog buns and English muffins pop up on your screen. The electronics industry would like to make such ...
Optics & Photonics
Oct 17, 2012
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