Computer Sciences
Since the early 1930s, electron microscopy has provided unprecedented access to the alien world of the extraordinarily small, revealing intricate details that are otherwise impossible to discern with conventional light microscopy. ...
Aug 13, 2020
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65
Engineering
UC Berkeley engineers have given new meaning to the term "working paper." Using inexpensive materials, they have fabricated foldable electronic switches and sensors directly onto paper, along with prototype generators, supercapacitors ...
Jul 9, 2018
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260
Engineering
Dr. Han Seong-Tae's team at KERI's Industry Applications Research Division has developed the core technology of "electron guns," the heart of "electron beam welders," which had been dependent on imports for more than 99%.
Mar 5, 2024
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32
Electronics & Semiconductors
If you've ever wished you had a faster phone, computer or internet connection, you've encountered the personal experience of hitting a limit of technology. But there might be help on the way.
Jun 27, 2023
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6
Engineering
The basic principle of the atomic force microscope is very simple: an extremely thin, movable tip on a cantilever is moved over a surface that is being examined. Tiny forces on an atomic scale act between the tip and the ...
May 17, 2023
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11
Engineering
From water-repellent to water-loving with ultraviolet (UV) light, surfaces are being developed that protect panels and glass facades from expensive and time-consuming cleanings.
Feb 14, 2023
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16
Engineering
Mechanical parts in industrial machinery and structures that develop thinning or cracks need to be replaced with new ones. In recent years, attempts to repair them have been considered, in order to improve industrial sustainability. ...
Jan 12, 2023
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22
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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5
Engineering
NIMS and Osaka University Graduate School of Engineering have succeeded in fabricating a nickel single crystal with only a very few crystalline defects by irradiating nickel powder with a large-radius, flat-top laser beam ...
Jul 12, 2022
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30
Electronics & Semiconductors
At the IEEE International Electron Devices Meeting (IEDM2020), R&D hub IMEC demonstrated the first flexible hardware platform for silicon spin qubit integration on 300 mm wafers. Physicists from IMEC also proposed novel ways ...
Dec 21, 2020
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20
Cathode rays (also called an electron beam or e-beam) are streams of electrons observed in vacuum tubes, i.e. evacuated glass tubes that are equipped with at least two metal electrodes to which a voltage is applied, a cathode or negative electrode and an anode or positive electrode. They were discovered by German scientist Johann Hittorf in 1869 and in 1876 named by Eugen Goldstein kathodenstrahlen (cathode rays). Electrons were first discovered as the constituents of cathode rays. In 1897 British physicist J. J. Thompson showed the rays were composed of a previously unknown negatively charged particle, which was named electron.
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