Energy & Green Tech
The past two decades have seen drastic progress in the development of semiconducting metal-halide perovskites (MHPs). The excellent optoelectronic properties and device performance make perovskites very attractive in various ...
Dec 14, 2022
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Engineering
Every time you flush a toilet, it releases plumes of tiny water droplets into the air around you. These droplets, called aerosol plumes, can spread pathogens from human waste and expose people in public restrooms to contagious ...
Dec 11, 2022
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Electronics & Semiconductors
Silicon (Si) has been the focus of the semiconductor industry and the modern electronic industry for the last half-century. However, its surface properties remain a mystery.
Dec 7, 2022
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Engineering
Warehouses are home to heavy volumes of traffic. The numbers of industrial trucks (pallet trucks, forklift vehicles and the like) traversing their aisles are growing especially large—in facilities that are themselves increasing ...
Dec 1, 2022
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Engineering
In May 2022, the TeraByte InfraRed Delivery (TBIRD) payload onboard a small CubeSat satellite was launched into orbit 300 miles above Earth's surface. Since then, TBIRD has delivered terabytes of data at record-breaking rates ...
Dec 1, 2022
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Energy & Green Tech
Along with bitterly cold temperatures, winter usually brings dry air and the occasional zap of static electricity. Those shocks might be annoying, but researchers are working to harness that otherwise wasted energy with triboelectric ...
Nov 21, 2022
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Robotics
Scientists from the Department of Mechanical Engineering at Osaka University introduced a method for manufacturing complex microrobots driven by chemical energy using in situ integration. By 3D-printing and assembling the ...
Nov 17, 2022
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Electronics & Semiconductors
Researchers from LP3 Laboratory in France developed a light-based technique for local material processing anywhere in the three-dimensional space of semiconductor chips. The direct laser writing of new functionalities opens ...
Nov 8, 2022
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Engineering
In additive manufacturing (AM), metal parts are commonly 3D-printed using a fabrication technique called "laser powder bed fusion" (LPBF). LPBF involves repeated rapid metal powder melting and solidification using a laser ...
Nov 1, 2022
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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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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.
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