Search results for National Semiconductor

Optics & Photonics Mar 19, 2024

A method to accurately center quantum dots within photonic chips

Devices that capture the brilliant light from millions of quantum dots, including chip-scale lasers and optical amplifiers, have made the transition from laboratory experiments to commercial products. But newer types of quantum-dot ...

Nanomaterials Mar 11, 2024

Researchers devise new ways to engineer carbon-based semiconductors for electronics of the future

It might look like a roll of chicken wire, but this tiny cylinder of carbon atoms—too small to see with the naked eye—could one day be used for making electronic devices ranging from night vision goggles and motion detectors ...

Analytical Chemistry Mar 11, 2024

A new sensor detects harmful 'forever chemicals' in drinking water

MIT chemists have designed a sensor that detects tiny quantities of perfluoroalkyl and polyfluoroalkyl substances (PFAS)—chemicals found in food packaging, nonstick cookware, and many other consumer products.

Nanophysics Feb 27, 2024

Nanocrystals set new hydrogen production activity record under visible and near-infrared irradiation

The sunlight received by Earth is a mixed bag of wavelengths ranging from ultraviolet to visible to infrared. Each wavelength carries inherent energy that, if effectively harnessed, holds great potential to facilitate solar ...

Quantum Physics Feb 21, 2024

Electrons become fractions of themselves in graphene, study finds

The electron is the basic unit of electricity, as it carries a single negative charge. This is what we're taught in high school physics, and it is overwhelmingly the case in most materials in nature.

Nanophysics Feb 15, 2024

Researchers capture strange behavior of laser-excited gold

New research, conducted at the Department of Energy's SLAC National Accelerator Laboratory, illuminates the strange behavior of gold when zapped with high-energy laser pulses.

Condensed Matter Feb 9, 2024

New research demonstrates how to study low concentrations of electrons in complex oxide films

Semiconductors in modern electronics rely on small quantities of added impurity elements, called dopants, that alter the ability of the material to conduct electricity. While the role of these dopants is often straightforward, ...

Nanomaterials Feb 8, 2024

A new 'metal swap' method for creating lateral heterostructures of 2D materials

Electronically conducting two-dimensional (2D) materials are currently hot topics of research in both physics and chemistry due to their unique properties that have the potential to open new avenues in science and technology. ...

Nanophysics Feb 7, 2024

Advanced measurements unravel nanoscale phenomena in tungsten diselenide

Semiconductor 2D materials are a few atoms thick, and some of them exhibit localized emission, where light is emitted from such a small part of the layer that only one photon at a time is produced. This localized emission ...

Analytical Chemistry Feb 6, 2024

Solving an age-old mystery about crystal formation

A million years ago, the oldest known species to walk upright like a human, the Homo erectus, had a human-like fascination with crystals. Historians can even pin down the possible reasons—crystals didn't look like anything ...

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