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Jun 25, 2024

Why don’t electrons in the atom enter the nucleus?

Posted by in categories: nuclear energy, particle physics, space

Article 39 Why an electron does not fall into the nucleus in terms of the strong and weak nuclear forces.

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It can be shown one may able to derive the strong and weak nuclear forces and the internal geometry of protons and neutrons in terms of the orientation of…

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Jun 25, 2024

Knitted metasurfaces enable flexible antennas for advanced electromagnetic applications

Posted by in category: futurism

Researchers develop flexible metasurfaces using industrial knitting techniques, potentially revolutionizing portable antennas and electromagnetic devices for communications and sensing.

Jun 25, 2024

Researchers propose the next platform for brain-inspired computing

Posted by in categories: mathematics, robotics/AI, sustainability

Computers have come so far in terms of their power and potential, rivaling and even eclipsing human brains in their ability to store and crunch data, make predictions and communicate. But there is one domain where human brains continue to dominate: energy efficiency.

“The most efficient computers are still approximately four orders of magnitude — that’s 10,000 times — higher in energy requirements compared to the human brain for specific tasks such as image processing and recognition, although they outperform the brain in tasks like mathematical calculations,” said UC Santa Barbara electrical and computer engineering Professor Kaustav Banerjee, a world expert in the realm of nanoelectronics. “Making computers more energy efficient is crucial because the worldwide energy consumption by on-chip electronics stands at #4 in the global rankings of nation-wise energy consumption, and it is increasing exponentially each year, fueled by applications such as artificial intelligence.” Additionally, he said, the problem of energy inefficient computing is particularly pressing in the context of global warming, “highlighting the urgent need to develop more energy-efficient computing technologies.”

Neuromorphic computing has emerged as a promising way to bridge the energy efficiency gap. By mimicking the structure and operations of the human brain, where processing occurs in parallel across an array of low power-consuming neurons, it may be possible to approach brain-like energy efficiency.

Jun 25, 2024

Multi-state MRAM cells for hardware neuromorphic computing

Posted by in category: computing

Rzeszut, P., Chȩciński, J., Brzozowski, I. et al. Multi-state MRAM cells for hardware neuromorphic computing. Sci Rep 12, 7,178 (2022). https://doi.org/10.1038/s41598-022-11199-4

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Jun 25, 2024

Logic-in-memory based on an atomically thin semiconductor

Posted by in categories: computing, materials

Logic operations and reconfigurable circuits are demonstrated that can be directly implemented using memory elements based on floating-gate field-effect transistors with monolayer MoS2 as the active channel material.

Jun 25, 2024

Low power nanoscale S-FED based single ended sense amplifier applied in integrate and fire neuron circuit

Posted by in categories: nanotechnology, neuroscience

Motaman, S., Ghafouri, T. & Manavizadeh, N. Sci Rep 14, 10,691 (2024). https://doi.org/10.1038/s41598-024-61224-x.

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Jun 25, 2024

3D integration of 2D electronics

Posted by in categories: computing, materials

Since the most advanced nodes in silicon are reaching the limits of planar integration, 2D materials could help to advance the semiconductor industry. With the potential for use in multifunctional chips, 2D materials offer combined logic, memory and sensing in integrated 3D chips.

Jun 25, 2024

Control of proton transport and hydrogenation in double-gated graphene

Posted by in category: materials

Independent control of the electric field and charge-carrier density in double-gated graphene allows the decoupling of proton transport and lattice hydrogenation, enabling both accelerated proton transport and proton-based logic operations.

Jun 25, 2024

Transistors explained – what they are and what they do

Posted by in categories: computing, electronics

Transistors are semiconductor devices that regulate current, amplify signals, and act as switches, forming the foundation of modern electronics.

Jun 25, 2024

Model of ever-expanding universe confirmed by dark energy probe

Posted by in category: cosmology

The standard theory of cosmology—which says 95% of the universe is made up of unknown stuff we can’t see—has passed its strictest test yet. The first results released from an instrument designed to study the cosmic effects of mysterious dark energy confirm that, to the nearest 1%, the universe has evolved over the past 11 billion years just as theorists have predicted.

The findings, presented today in a series of talks at the American Physical Society meeting in Sacramento, California, and the Moriond meeting in Italy, as well as in a set of preprints posted to arXiv, come from the Dark Energy Spectroscopic Instrument (DESI), which has logged more than 6 million galaxies in deep space to construct the largest 3D map of the universe yet compiled.

“It’s a tremendous instrument and a major result,” says Eric Gawiser, a cosmologist at Rutgers University who was not involved with the work. “The universe DESI is finding is very sensible, with tantalizing hints of a more interesting one.”

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