Electronics & Semiconductors
The photovoltaic effect of ferroelectric crystals can be increased by a factor of 1,000 if three different materials are arranged periodically in a lattice. This has been revealed in a study by researchers at Martin Luther ...
Jul 20, 2021
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2140
Internet
Optical data communications lasers can transmit several tens of terabits per second, despite a huge amount of disruptive air turbulence. ETH Zurich scientists and their European partners demonstrated this capacity with lasers ...
Jun 20, 2023
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3239
Security
Self-driving cars, like the human drivers that preceded them, need to see what's around them to avoid obstacles and drive safely.
Oct 31, 2022
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266
Robotics
The development of stimuli-responsive polymers has brought about a wealth of material-related opportunities for next-generation small-scale, wirelessly controlled soft-bodied robots. For some time now, engineers have known ...
Jan 30, 2023
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5258
Robotics
Insect-sized flying robots could help with time-consuming tasks like surveying crop growth on large farms or sniffing out gas leaks. These robots soar by fluttering tiny wings because they are too small to use propellers, ...
May 15, 2018
2
8638
Engineering
A team of researchers demonstrated that popular robotic household vacuum cleaners can be remotely hacked to act as microphones.
Nov 18, 2020
0
756
Robotics
A Cornell University-led collaboration has created the first microscopic robots that incorporate semiconductor components, allowing them to be controlled—and made to walk—with standard electronic signals.
Aug 26, 2020
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204
Engineering
Researchers have not yet gotten the additive manufacturing (or 3D printing) of metals down to a science completely. Gaps in our understanding of what happens within metal during the process have made results inconsistent. ...
Mar 20, 2023
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250
Engineering
Smartphones that don't scratch or shatter. Metal-free pacemakers. Electronics for space and other harsh environments. These could all be made possible thanks to a new ceramic welding technology developed by a team of engineers ...
Aug 22, 2019
2
2047
Engineering
To boost efficiency in typical households—where people forget to take wet clothes out of washing machines, retrieve hot food from microwaves and turn off dripping faucets—Cornell University researchers have developed ...
Sep 9, 2020
1
218
A laser is a device that emits light (electromagnetic radiation) through a process called stimulated emission. The term laser is an acronym for light amplification by stimulated emission of radiation. Laser light is usually spatially coherent, which means that the light either is emitted in a narrow, low-divergence beam, or can be converted into one with the help of optical components such as lenses. Typically, lasers are thought of as emitting light with a narrow wavelength spectrum ("monochromatic" light). This is not true of all lasers, however: some emit light with a broad spectrum, while others emit light at multiple distinct wavelengths simultaneously. The coherence of typical laser emission is distinctive. Most other light sources emit incoherent light, which has a phase that varies randomly with time and position.
This text uses material from Wikipedia, licensed under CC BY-SA
