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Latest Refraction Stories

Flat Surface Turned Into Spherical Antenna Using New Device
2014-04-15 16:29:04

By Jason Bardi, American Institute of Physics Broadband transformational optics lens, described in Applied Physics Letters, may lead to antenna dishes that are flat or conform to any surface By depositing an array of tiny, metallic, U-shaped structures onto a dielectric material, a team of researchers in China has created a new artificial surface that can bend and focus electromagnetic waves the same way an antenna does. This breakthrough, which the team is calling the first...

2014-04-14 12:30:52

Broadband Transformational Optics Lens, Described in "Applied Physics Letters," May Lead to Antenna Dishes that are Flat or Conform to Any Surface WASHINGTON, April 14, 2014 /PRNewswire-USNewswire/ -- By depositing an array of tiny, metallic, U-shaped structures onto a dielectric material, a team of researchers in China has created a new artificial surface that can bend and focus electromagnetic waves the same way an antenna does....

2014-03-24 23:22:20

By curating innovators and communities beyond the tech sector, Canvas’ Refraction Reston is unique from any other co-working space in region. Reston, VA (PRWEB) March 24, 2014 Northern Virginia’s vibrant technology, nonprofit and creative communities now have access to a pioneering 12,000 square foot co-working space with a 5,000 square foot growth annex in Reston Town Center that will empower collaboration and innovation among entrepreneurs and startups from diverse industries beyond...

Research Helps Lay Out Theory For Metamaterials That Act As Analog Computer
2014-01-10 09:54:04

[ Watch The Video: Explaining Metamaterials ] University of Pennsylvania The field of metamaterials has produced structures with unprecedented abilities, including flat lenses, invisibility cloaks and even optical "metatronic" devices that can manipulate light in the way electronic circuitry manipulates the flow of electrons. Now, the birthplace of the digital computer, ENIAC, is using this technology in the rebirth of analog computing. A study by researchers at the University...

Human Eye Gives Visionary Design For New, More Natural Lens Technology
2012-11-13 17:02:31

Optical Society of America Drawing heavily upon nature for inspiration, a team of researchers has created a new artificial lens that is nearly identical to the natural lens of the human eye. This innovative lens, which is made up of thousands of nanoscale polymer layers, may one day provide a more natural performance in implantable lenses to replace damaged or diseased human eye lenses, as well as consumer vision products; it also may lead to superior ground and aerial surveillance...

Negative Refraction In Metamaterials
2012-08-02 11:02:12

April Flowers for redOrbit.com - Your Universe Online In a vacuum, light moves extraordinarily fast. Fast enough to circle the Earth seven times before you can literally blink your eye. When light travels through matter, however, it slows down by just less than a factor of five. This refractive index factor is positive in naturally occurring materials, causing light to bend in a particular direction when it passes through matter like water or a glass, for example. In the last 20...

Michigan Tech Researcher Nears Creation Of Superlens
2012-01-09 04:37:13

A superlens would let you see a virus in a drop of blood and open the door to better and cheaper electronics. It might, says Durdu Guney, make ultra-high-resolution microscopes as commonplace as cameras in our cell phones. No one has yet made a superlens, also known as a perfect lens, though people are trying. Optical lenses are limited by the nature of light, the so-called diffraction limit, so even the best won´t usually let us see objects smaller than 200 nanometers across, about...

2011-12-23 01:11:19

Researchers have shown how arrays of tiny "plasmonic nanoantennas" are able to precisely manipulate light in new ways that could make possible a range of optical innovations such as more powerful microscopes, telecommunications and computers. The researchers at Purdue University used the nanoantennas to abruptly change a property of light called its phase. Light is transmitted as waves analogous to waves of water, which have high and low points. The phase defines these high and low points...

The Physics Of Rainbows
2011-12-07 09:16:54

[ Video 1 ] | [ Video 2 ] | [ Video 3 ] Computer scientists at UC San Diego, who set out to simulate all rainbows found in nature, wound up answering  questions about the physics of rainbows as well. The scientists recreated a wide variety of rainbows — primary rainbows, secondary rainbows, redbows that form at sunset and cloudbows that form on foggy days — by using an improved method for simulating how light interacts with water drops of various shapes and sizes. Their...

2011-11-09 10:36:17

A new type of active metamaterial that incorporates semiconductor devices into conventional metamaterial structures is demonstrating an ability to have power gain while retaining its negative refraction property, a first in the world of metamaterials research. "Our simulation and experimental results show that the addition of the battery powered semiconductor diodes not only provided gain, but also maintained the negative index of this kind of metamaterial," said Dr. Hao Xin of the...


Word of the Day
lunula
  • A small crescent-shaped structure or marking, especially the white area at the base of a fingernail that resembles a half-moon.
This word is a diminutive of the Latin 'luna,' moon.
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