Full-color LEDs cut down to size
Tiny light-emitting devices that can create all the colors in the rainbow are essential for the next generation of phones and screens.
Optics & Photonics
Sep 27, 2021
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Page 18 - News tagged with leds
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Rapid increase in global light pollution
Global light pollution has increased by at least 49% over 25 years, new research shows.
Environment
Sep 14, 2021
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17
Why the changing color of streetlights could be a danger for insect populations
Life on Earth has evolved alongside predictable cycles of day and night. But this pattern has become increasingly blurred. Between 2012 and 2016, satellite measurements revealed that the global area polluted by artificial ...
Plants & Animals
Aug 26, 2021
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386
Germanium-lead perovskite LEDs: A new way to reduce toxicity
Metal-halide perovskites are a new class of semiconductor materials for LED display and solar-energy harvesting. However, the best-performing devices are often made from lead (Pb)-based perovskites, whose toxicity may cause ...
Materials Science
Aug 6, 2021
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119
LEDs light the way to coronavirus disinfection
LEDs are commonly used for sterilization—you may be using one to clean your electric toothbrush, for example. In the continued effort to combat the coronavirus pandemic, LEDs can also help inactivate SARS-CoV-2.
Optics & Photonics
Aug 4, 2021
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56
After street lights in an entire county were swapped to LEDs, light pollution got worse
"The best laid plans of mice and men often go awry"—this famous paraphrase of Scottish poet Robert Burns sometimes sums up human ingenuity. That is exactly what happened when a county in Washington State decided to replace ...
Environment
Jul 9, 2021
9
27
Sol 2931: Mars Hand Lens Imager instrument acquires image
NASA's Mars rover Curiosity acquired this image using its Mars Hand Lens Imager (MAHLI), located on the turret at the end of the rover's robotic arm, on November 3, 2020, Sol 2931 of the Mars Science Laboratory Mission, at ...
Space Exploration
Nov 6, 2020
1
179
Tailored meta-grid of nanoparticles boosting performance of light-emitting diodes
Introducing the newly designed 'meta-grid' of nanoparticles into the epoxy casing of light-emitting diodes (LEDs) offers a substantial improvement of their light output, besides increasing lifetime, according to the scientists ...
Optics & Photonics
Jul 29, 2020
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11
Stable perovskite LEDs one step closer
Researchers at Linköping University, working with colleagues in Great Britain, China and the Czech Republic, have developed a perovskite light-emitting diode (LED) with both high efficiency and long operational stability. ...
Materials Science
Apr 1, 2020
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9
Quickly designing a white LED
The advent of the white light emitting diode (LED), which consists of a blue LED with a phosphor layer, greatly reduces the energy consumption for lighting. Despite the fast-growing market, white LEDs are still being designed ...
Optics & Photonics
Oct 9, 2019
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