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Duke University News
Metamaterial Shows Promise as THz Imager
CHESTNUT HILL, Mass., June 30, 2014 — An imaging approach involving metamaterials could make the terahertz regime more accessible. Researchers from Boston College, the University of New Mexico and Duke University engineered a low-power multiplex tunable spatial light modulator (SLM) that uses a series of masks to retrieve multiple samples, which are reassembled by a single-pixel detector. Data obtained from these encoded measurements are used to computationally reconstruct the images as much as six times faster than
Seeing the puck in strobe
Mar 6, 2014 — The buzzer sounds. The crowds cheer. Twelve angry hockey players fly out onto the ice, blades clicking, to test their reflexes, brute force and balance. It’s pandemonium. Chaos. And in the middle of it all, each player is hunting for a tiny,...
Microwaves Wirelessly Converted to Direct Current
DURHAM, N.C., Nov. 8, 2013 — A new device designed using manmade, inexpensive materials operates as a power harvester with efficiency similar to solar panels but can wirelessly convert microwave signals into direct current voltage capable of recharging a cell phone battery or...
Centice Names CEO, Adds Bridge Financing
RESEARCH TRIANGLE PARK, N.C., Oct. 30, 2013 — Raman spectroscopy technology provider Centice Corp. has named John Goehrke as CEO and negotiated with current investors to provide up to $1.5 million in bridge financing, the company said this week. Centice was founded in 2004 from technology...
Pump-Probe Laser Imaging to Improve the Arts
RALEIGH, N.C., July 16, 2013 — A pump-probe laser technique designed to diagnose melanoma has now been applied to art, uncovering paint pigments and layering techniques noninvasively to provide historical insight into works of art.
SERS, Nanoprobes Seek to Detect Infections Early
DURHAM, N.C., June 21, 2013 — Nanoprobes used in conjunction with surface-enhanced Raman scattering (SERS) can be used to reveal a specific molecular marker’s optical fingerprint. The work is a proof-of-principle approach to using light to detect infections before patients...
Fund Makes First Investment in Photonics Tech
BOSTON and MOSCOW, June 19, 2013 — A new venture capital fund has made its first round of investments in companies seeking to commercialize technology related to nanophotonics, metamaterials and quantum information processing. Quantum Wave Fund (QWave), a global venture capital fund...
Invisibility Cloaks to Become DIY?
DURHAM, N.C., May 7, 2013 — Invisibility cloaks, first demonstrated in complex lab experiments at Duke University seven years ago, could become much simpler to create using 3-D printing, a Duke engineer believes. "I would argue that essentially anyone who can spend a couple...
Sprinkled silver nanocubes enhance light absorption
DURHAM, N.C. – Just as salt sprinkled over a piece of meat enhances its flavor, tiny silver cubes sprinkled at random on a polymer-coated gold surface enhance the material’s ability to “perfectly” absorb light of a given wavelength. A simple...
Image Compressor Beats JPEG
DURHAM, N.C., Jan. 18, 2013 — Unlike jpeg algorithms, which compress an image after it is taken, a new low-profile metamaterial sensor uses microwave imaging to compress pictures as they are being recorded.
Sprinkled Silver Nanocubes Make Super Light Absorbers
DURHAM, N.C., Dec. 7, 2012 — Microscopic silver cubes, when sprinkled at random on a polymer-coated gold surface, can provide a simple and tunable way to create large-area absorbers that “perfectly” absorb light of a given wavelength.
Enhanced Cloaking Device Eliminates Reflections
DURHAM, N.C., Nov. 12, 2012 — A new technology refines the original invisibility cloak by eliminating the reflections at the edges of the device that result in lost waves — one of the key issues preventing complete invisibility. The enhanced metamaterial could revolutionize...
High-Growth Markets Focus of Photonics West Panel
BELLINGHAM, Wash., Nov. 7, 2012 — Reducing energy consumption in homes, businesses and data centers and providing efficient renewable energy sources to high-growth markets for sustainable photonics technologies will be discussed by a panel of five industry leaders at SPIE Photonics...
System measures limits of plasmonic enhancement
DURHAM, N.C., and LONDON – Photonic interactions have been measured for the first time on the scale of a single atom. The ability to quantify the unique properties of light gives physicists a road map to precise control of scattering in metal-based devices such as biosensors...
Limits of Plasmonic Enhancement Measured
DURHAM, N.C., & LONDON, Aug. 31, 2012 — Photonic interactions have been measured on the scale of a single atom for the first time. The ability to quantify the unique properties of light gives physicists a "road map" for precisely controlling its scattering in metal-based devices such as...
Gigapixel “supercamera” delivers sharp shots
DURHAM, N.C. – The challenge to creating high-pixel imaging lies in the sophistication of the integrated circuits rather than the optics, and now scientists have overcome this hurdle by developing a supercamera that synchronizes 98 microcameras into a single...
‘Supercamera’ Takes Gigapixel Images
DURHAM, N.C., June 20, 2012 — By synchronizing 98 microcameras into a single device, electrical engineers at Duke University and the University of Arizona developed a supercamera that can stitch together images with a resolution of 50 gigapixels, or 50,000 megapixels. Turns out...
Carbon Nanotubes Create More Efficient IR Detector
BEIJING, May 24, 2012 — Carbon nanotubes seem to be useful for just about every conceivable application. Their newest purpose is to create highly sensitive uncooled photovoltaic infrared detectors that can be used for industrial, manufacturing, communications and military...
Nanostructure Creation Takes Bottom Up Approach
DURHAM, N.C., May 2, 2012 — A bottom-up approach to the self-assembly of microscopic particles into larger crystalline structures – by altering the concentrations of tiny particles and their magnetic fields – could produce the basic components for advanced optics, data storage...
IR Material Creates Holograms
DURHAM, N.C., March 19, 2012 — A newly developed metamaterial construct could create holograms in the infrared range for the first time.
Copper nanowires enable cheaper foldable electronics, solar cells
DURHAM, N.C. — Copper nanowires could bring down production costs for electronic displays, foldable electronics and solar cells — helping engineers build more affordable e-readers, iPads, cell phones, photovoltaic panels and more. A new technique...
Biomolecules Show Their True Colors
DURHAM, N.C., Oct. 28, 2011 — After years of black-and-white and false-color 3-D molecular imaging, events beneath the surface of the skin can now be viewed in their true colors. A novel method detects and shows, for example, the vivid shades of red of hemoglobin as it is...
Major Patent Overhaul Becomes Law
WASHINGTON, Sept. 16, 2011 — President Barack Obama today signed the most significant reform of US patent law since 1836 and the first major changes to the system since 1952. On stage with a bipartisan group of legistators, Obama signed the Leahy-Smith America Invents Act into...
Molecular Sensor Changes Color When Stressed
PHILADELPHIA, Aug. 23, 2011 — It is helpful — even life-saving — to have a warning sign before a structural system fails, but when the system is only a few nanometers in size, having a sign that is easy to read is a challenge. Now, however, a newly developed...
Metamaterial Manipulates Light at Will
DURHAM, N.C., Aug. 2, 2011 — Much in the same way that electronics manipulate electrons, Duke University researchers have developed a material that allows them to manipulate light at will, a discovery that could help replace electronic components with optical technology. ...
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May 2024
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