Engineering
When electronic devices like laptops or smartphones overheat, they are fundamentally suffering from a nanoscale heat transfer problem. Pinpointing the source of that problem can be like trying to find a needle in a haystack.
Jul 17, 2024
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1
Hardware
Imagine a movie about a rogue employee who breaches security in a company that implants chips inside half of the world's computers. They embed a Trojan in systems around the globe and hold the world to ransom.
Apr 3, 2023
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26
Hardware
Graph neural networks have been widely used for studying social networks, e-commerce, drug predictions, human-computer interaction, and more.
Mar 1, 2023
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71
Computer Sciences
Ralph Lydic, professor in the UT Department of Psychology, and Dmitry Bolmatov, a research assistant professor in the UT Department of Physics and Astronomy, are part of a UT/ORNL research team studying how bio-inspired materials ...
Jan 9, 2023
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28
Hardware
Transistors or "microchips" partially explain why our paper-thin laptops can perform much more complicated tasks than their clumsy, gigantic predecessors. To maximize computing capabilities, engineers are trying to make transistors ...
Dec 5, 2022
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12
Energy & Green Tech
Researchers at the U.S. Department of Energy's (DOE) Argonne National Laboratory have a long history of breakthrough discoveries with lithium-ion batteries. Many of these discoveries have focused on a battery cathode known ...
Sep 8, 2022
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113
Energy & Green Tech
The sun continuously transmits trillions of watts of energy to the Earth. It will be doing so for billions more years. Yet, we have only just begun tapping into that abundant, renewable source of energy at affordable cost.
Aug 31, 2022
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98
Energy & Green Tech
For decades, scientists have tried to make reliable lithium-metal batteries. These high-performance storage cells hold 50% more energy than their prolific, lithium-ion cousins, but higher failure rates and safety problems ...
Jul 14, 2021
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498
Engineering
Theologians once pondered how many angels could dance on the head of a pin. Not to be outdone, Cornell researchers who build nanoscale electronics have developed microsensors so tiny, they can fit 30,000 on one side of a ...
Apr 22, 2020
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6104
Energy & Green Tech
Inside modern cell phones are billions of nanoscale switches that flip on and off, allowing the phone to function. These switches, called transistors, are controlled by an electrical signal that is delivered via a single ...
Apr 15, 2019
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416
The nanoscopic scale usually refers to structures with a length scale applicable to nanotechnology, usually cited as 1-100 nanometers. The nanoscopic scale is roughly speaking a lower bound to the mesoscopic scale for most solids.
For technical purposes, the nanoscopic scale is the size at which the expected fluctuations of the averaged properties due to the motion and behavior of individual particles can no longer be reduced to below some desirable threshold (often a few percent), and must be rigorously established within the context of any particular problem.
The 'nanoscopic scale' is sometimes marked as the point where the properties of a material change; above this point, the properties of a material are caused by 'bulk' or 'volume' effects, namely which atoms are present, how they are bonded, and in what ratios. Below this point, the properties of a material change, and while the type of atoms present and their relative orientations are still important, 'surface area effects', also referred to as quantum effects, become more apparent-these effects are due to the geometry of the material (how thick it is, how wide it is, etc), which, at these low dimensions, can have a drastic effect on quantized states, and thus the properties of a material.
This text uses material from Wikipedia, licensed under CC BY-SA
