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visible spectrum News
Tunable Smart Surfaces Cover Visible Spectrum and Beyond
MANCHESTER, England, April 9, 2021 — Work from the University of Manchester outlines applications for smart surface technology that covers the entire electromagnetic spectrum, including the visible light region. Applications for the new optical devices range from next-generation display devices to dynamic thermal blankets for satellites, as well as multispectral adaptive camouflage. The tenability of these devices comes from electro-intercalation, a process that in this case involves the interposing of lithium ions between
Injected Nanoparticles Could Enable Sight Beyond Visible Spectrum
WORCESTER, Mass., Sept. 3, 2019 — No mammalian photoreceptor can effectively detect light that exceeds 700 nm, and mammals are unable to see near-infrared (NIR) light or to project a NIR image to the brain. To enable the detection of longer wavelength light in mammals, scientists at...
Capasso Group Develops Flat Lenses with Same Technology Used to Make Chips
CAMBRIDGE, Mass., July 5, 2018 — Optics and lenses are everywhere. They’re in laptops, cameras, and telescopes. Focusing the entire visible spectrum with lenses has been a challenge because each wavelength moves through materials at different speeds. Red wavelengths will move...
3D-Printed Hyperspectral Imagers Designed for UAVs
LONGYEARBYEN, Norway, March 1, 2018 — Researchers used 3D printing and low-cost parts to create an inexpensive hyperspectral imager that is light enough to use onboard drones. The visible-wavelength hyperspectral imager (HSI) weighs less than half a pound and, according to researchers,...
Metalens for Immersion Microscope Overcomes Challenges of Hand-Polishing Techniques
CAMBRIDGE, Mass., June 2, 2017 — A flat lens for immersion microscopy has been developed. The lens, which can be designed for use with any form of liquid, could provide a cost-effective and easy-to-manufacture alternative to hand polishing lenses for immersion objectives. Because...
Achromatic Metalens Operates Over a Continuous Visible Bandwidth
CAMBRIDGE, Mass., Feb. 23, 2017 — The development of a flat lens that works within a continual bandwidth of colors close to that of an LED could lead to novel applications in imaging, spectroscopy and sensing. The development is based on the 2016 discovery of a planar metalens that...
Moon-Shaped Metamaterial Broadens Manipulatable Bandwidths
STANFORD, Calif., May 9, 2013 — A new engineered broadband material crafted from artificial atoms more than doubles the range of light wavelengths that can be manipulated by such metamaterials, a development that could lead to perfect microscope lenses or invisibility cloaks....
Carbon nanotube detector works in the infrared at room temperature
HOUSTON – A photodetector that uses carbon nanotube films of varying widths can gather light in and beyond visible wavelengths, a finding that promises to make possible a unique set of optoelectronic devices, solar cells and maybe even specialized cameras....
Polycrystalline Diamond Used to Fabricate Optical Circuits
KARLSRUHE, Germany, April 12, 2013 — Optical circuits manufactured from polycrystalline diamond create new possibilities for all-optical sensor technology platforms.
On-chip detector reliably finds single photons
KARLSRUHE, Germany – Single photons can be reliably detected for data transmission and quantum computing by integrating detectors with nanophotonic chips, an international team has discovered. Ultrafast, efficient and reliable single-photon detectors suitable for...
Nanotube Detector a Promising Optoelectronic Device
HOUSTON, Feb. 28, 2013 — A nanotube-based photodetector that gathers light in and beyond visible wavelengths promises to make possible a unique set of optoelectronic devices, solar cells and maybe even specialized cameras.
Single-Photon Detector Is On Chip
KARLSRUHE, Germany, Jan. 25, 2013 — By integrating single-photon detectors with nanophotonic chips, an international team of scientists has developed a way to reliably detect single photons for optical data transmission and quantum computations.
Laser Imaging Assesses Sunscreen Safety
WASHINGTON, Dec. 2, 2011 — In an attempt to answer safety questions about the use of nanoparticles in sunscreen, a new laser imaging technique has been developed to assess the risks associated with one of sunscreen’s ingredients — zinc oxide (ZnO). Overlay...
Nanoscale waveguides created for next-gen communication
BERKELEY, Calif. – The first true hybrid plasmon polariton nanoscale waveguides for next-generation on-chip optical communications systems have been demonstrated, which could hold great potential for nanophotonics, including intrachip optical communications, signal...
“Carpet cloak” hides more than its size implies
LYNGBY, Denmark – Optical cloaking is getting a boost from metamaterials in a new technology called “carpet cloaking,” which can conceal a much larger area than other cloaking techniques of comparable size. The new carpet cloak, based on an...
Cloaking Achieved in Visible Spectrum
KARLSRUHE, Germany, June 2, 2011 — The Karlsruhe invisibility cloak has been refined such that it is now effective in the visible spectral range. "Seeing something invisible with your own eyes is an exciting experience," say Joachim Fischer and Tolga Ergin, physicists and...
Mimicking photosynthesis for cheap hydrogen fuel
UNIVERSITY PARK, Pa. – Production of inexpensive hydrogen for automotive or jet fuel may one day be possible by mimicking photosynthesis, but a number of hurdles first must be overcome. Scientists at Pennsylvania State University have developed an artificial system...
Sofradir Promotes Billon-Lanfrey to VP Post
PARIS, March 10, 2011 — Sofradir, an advanced infrared detector manufacturer for military, space and industrial applications, has appointed David Billon-Lanfrey as vice president of R&D, technology and products. He replaces Philippe Tribolet. Billon-Lanfrey will...
Optical Materials Going Designer
AMES, Iowa, Jan. 6, 2011 — Advancements in fabrication technologies may lead to superlenses and other designer optical materials, according to an Iowa State University and Ames Laboratory physicist. In an article titled “Improving Metamaterials” published in...
Solid-state Sensor Combines Optics, Electronics
PITTSBURGH, Nov. 17, 2010 — University of Pittsburgh researchers have created a nanoscale light sensor that can be combined with near-atomic-size electronic circuitry to produce hybrid optic and electronic devices with new functionality. The team, which also involved...
Laser Blinds Heat-Seeking Missiles
ANN ARBOR, Mich., Sept. 7, 2010 — New laser technology is being developed that will protect helicopters in combat from heat-seeking missiles. "Battlefield terrain in places like Afghanistan and Iraq can be so rough that our troops have often had to rely on helicopters, and they can...
Phosphorescence Licensing
Oct 1, 2009 — Performance Indicator LLC of Lowell, Mass., has acquired an international nonexclusive license for a portfolio of glow-in-the-dark pigments. Developed by the University of Georgia Research Foundation Inc. in Athens and the University of Puerto Rico...
Light Emitting Diodes - A Primer
Sep 29, 2008 — From the Web Exclusive, "Seeing the True Colors of LEDs."Light emitting diodes (LEDs) are semiconductors that convert electrical energy into light energy. The color of the emitted light depends on the semiconductor material and composition. The...
Seeing the True Colors of LEDs
Sep 29, 2008 — In applications where light emitting diodes (LEDs) are being viewed directly, or being used as illuminators, exact color is far more important than exact output in lumens or candela. The human eye is relatively insensitive to light intensity changes...
LED-Pumped Polymer Laser Emits at 568 nm
Jul 1, 2008 — Semiconducting conjugated polymer materials are easy to fabricate into photonic devices, and their emission spans the visible spectrum. They would be attractive candidates for commercial lasers, but until now, they required pumping by another laser,...
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April 2024
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