News tagged with gratings
3-D, after-the-fact focus image sensors invented
(PhysOrg.com) -- At the heart of digital photography is a chip called an image sensor that captures a map of the intensity of the light as it comes through the lens and converts it to an electronic signal.
Apr 03, 2012 |
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Researchers efficiently couple light from a plane wave into a surface plasmon mode
Researchers from the NIST Center for Nanoscale Science and Technology have made a grating coupler that transmits over 45 % of the incident optical energy from a plane wave into a single surface plasmon polariton (SPP) mode ...
Feb 02, 2012 |
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Colored solar cells could make display screens more efficient
(PhysOrg.com) -- A new kind of screen pixel doubles as a solar cell and could boost the energy efficiency of cell phones and e-readers. The technology could also potentially be used in larger displays to make ...
Nanotechnology / Nanomaterials
Oct 07, 2011 |
4.8 / 5 (6) |
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Paging Han Solo: Researchers find more efficient way to steer laser beams
For many practical applications involving lasers, it's important to be able to control the direction of the laser beams. Just ask Han Solo, or the captain of the Death Star. Researchers from North Carolina State University ...
May 02, 2011 |
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Miniature invisibility 'carpet cloak' hides more than its small size implies
Invisibility cloaks are seemingly futuristic devices capable of concealing very small objects by bending and channeling light around them. Until now, however, cloaking techniques have come with a significant ...
Apr 19, 2011 |
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Trapping a rainbow: Researchers slow broadband light waves with nanoplasmonic structures
A team of electrical engineers and chemists at Lehigh University have experimentally verified the "rainbow" trapping effect, demonstrating that plasmonic structures can slow down light waves over a broad range of wavelengths.
Mar 14, 2011 |
4.5 / 5 (2) |
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Hydrogels used to make precise new sensor
Researchers are developing a new type of biological and chemical sensor that has few moving parts, is low-cost and yet highly sensitive, sturdy and long-lasting.
Feb 08, 2011 |
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Smallest U-M logo demonstrates advanced display technology
In a step toward more efficient, smaller and higher-definition display screens, a University of Michigan professor has developed a new type of color filter made of nano-thin sheets of metal with precisely ...
Aug 24, 2010 |
4.9 / 5 (20) |
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Imec's SiGe MEMS technology platform improves performance of state-of-the-art MEMS
Imec researchers demonstrated the value of its SiGe above-IC MEMS technology platform for improving performance of state-of-the-art MEMS with the development of new MEMS devices. The new devices are a 15µm ...
Jul 14, 2010 |
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Plastic money: Australia's plastic bills make life difficult for counterfeiters
(PhysOrg.com) -- Counterfeiting money is the "second oldest profession in the world" -- a profession that truly took off with the introduction of paper money. In order to spoil things for counterfeiters, Australia introduced ...
Apr 07, 2010 |
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Engineers tune a nanoscale grating structure to trap and release a variety of light waves
People debating politics are well-advised to shed more light than heat. Engineers working in optical technologies have the same aspiration.
Feb 17, 2009 |
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Grating
A grating is any regularly spaced collection of essentially identical, parallel, elongated elements. Gratings usually consist of a single set of elongated elements, but can consist of two sets, in which case the second set is usually perpendicular to the first (as illustrated). When the two sets are perpendicular, this is also known as a mesh.
For more information about Grating, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
