Electronics & Semiconductors

Fabricating qubits using advanced semiconductor manufacturing processes

Quantum computers are promising computing machines that perform computations leveraging the collective properties of quantum physics states. These computers could help to tackle many computational problems that are currently ...

Electronics & Semiconductors

Nitride ferroelectric semiconductors for next-generation electronics

For the first time, researchers achieved single-crystalline high quality ferroelectric III-V semiconductors that can be integrated into existing platforms for a broad range of ferroelectric, electronic, optoelectronic, and ...

Electronics & Semiconductors

Nanoscale Schottky diodes fabricated via adhesion lithography

To fabricate nanoscale photonic and electronic devices, engineers need electrodes made of asymmetric metals separated by gaps in the nanometer (nm) length scale. So far, most of these electrodes were fabricated using high-end ...

Electronics & Semiconductors

Silicon nanowire transistors with both learning and memory functions

Neuromorphic computing entails building architectures inspired by elements of the human brain, such as neural organization and synapses. These architectures have proved to be highly promising and advantageous for a number ...

Engineering

New technology revolutionizes 3-D metal printing

Selective LED-based melting (SLEDM)—the targeted melting of metal powder using high-power LED light sources—is the name of the new technology that a team led by Franz Haas, head of the Institute of Production Engineering ...

Engineering

Engineers develop origami electronics from cheap, foldable paper

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 ...

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Cathode ray

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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