Engineering
While 3D printing techniques have advanced significantly in the last decade, the technology continues to face a fundamental limitation: objects must be built up layer by layer. But what if they didn't have to be?
Apr 20, 2022
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760
Engineering
In a step closer to skyscrapers that serve as power sources, a team led by University of Michigan researchers has set a new efficiency record for color-neutral, transparent solar cells.
Aug 17, 2020
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3272
Engineering
Like something out of a spy movie, thermal cameras make it possible to "see" heat by converting infrared radiation into an image. They can detect infrared light given off by animals, vehicles, electrical equipment and even ...
Jun 8, 2023
1
1574
Engineering
Imagine a device that can sit outside under blazing sunlight on a clear day, and without using any power cool things down by more than 23 degrees Fahrenheit (13 degrees Celsius). It almost sounds like magic, but a new system ...
Oct 30, 2019
4
1118
Engineering
What if solar cells worked at night? That's no joke, according to Jeremy Munday, professor in the Department of Electrical and Computer Engineering at UC Davis. In fact, a specially designed photovoltaic cell could generate ...
Jan 30, 2020
11
1394
Energy & Green Tech
An international research team led by scientists from Nanyang Technological University, Singapore (NTU Singapore) has developed a material that—when coated on a glass window panel—can effectively self-adapt to heat or ...
Dec 16, 2021
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1236
Engineering
Injuries can't heal without a constant influx of blood's key ingredient—oxygen.
Nov 8, 2018
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780
Electronics & Semiconductors
UNSW researchers have made a major breakthrough in renewable energy technology by producing electricity from so-called "night-time" solar power.
May 17, 2022
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2340
Consumer & Gadgets
Thermal-imaging sensors that detect and capture images of the heat signatures of human bodies and other subjects have recently sprung into use in thermostats to check facial temperatures for contactless COVID-19 screening ...
Jul 26, 2021
0
10
Engineering
For Chinese scientists at Jiangnan University, the shape of things to come rests on a ceramic slurry and 3D printing.
Infrared (IR) radiation is electromagnetic radiation whose wavelength is longer than that of visible light (400-700 nm), but shorter than that of terahertz radiation (100 µm - 1 mm) and microwaves (~30,000 µm). Infrared radiation spans roughly three orders of magnitude (750 nm and 100 µm).
Direct sunlight has a luminous efficacy of about 93 lumens per watt of radiant flux, which includes infrared (47% share of the spectrum), visible (46%), and ultra-violet (only 6%) light. Bright sunlight provides luminance of approximately 100,000 candela per square meter at the Earth's surface.
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