Category Technology/Electronics

A Peculiar State of Matter in Layers of Semiconductors

A cube with stripes representing layers of semiconductors, with clusters of gold spheres representing nanodots
The setup for the milli-electronvolt inelastic X-ray scattering that probes the many-body localization in the disordered superlattice system
Credits:Image courtesy of the researchers

Scientists around the world are developing new hardware for quantum computers, a new type of device that could accelerate drug design, financial modeling, and weather prediction. These computers rely on qubits but these are fickle, degrading into regular bits when interactions with surrounding matter interfere. But new research at MIT suggests a way to protect their states, using a phenomenon called many-body localization (MBL).

MBL is a peculiar phase of matter, proposed decades ago, that is unlike solid or liquid. Typically, matter comes to thermal equilibrium with its environment...

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Scientists develop new technique for large-scale energy storage

electric vehicles
Credit: Pixabay/CC0 Public Domain

The sale of electric vehicles (EVs) has grown exponentially in the past few years as has the need for renewable energy sources to power them, such as solar and wind. There were nearly 1.8 million registered electric vehicles in the U.S. as of 2020, which is more than three times as many in 2016, according to the International Energy Agency (IEA).

Electric vehicles require power to be available anywhere and anytime, without delays in recharging, but solar and wind are intermittent energy sources that are not available on demand. And the electricity they do generate needs to be stored for later use and not go to waste. That’s where Dr...

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Woven Nanotube Fibers turn Heat Energy into Electrical Energy

Carbon nanotubes woven into thread-like fibers and sewn into fabrics become a thermoelectric generator that can turn heat from the sun or other sources into energy. Photo by Jeff Fitlow

Flexible thermoelectric generators could be useful way to make carbon ‘green’. Invisibly small carbon nanotubes aligned as fibers and sewn into fabrics become a thermoelectric generator that can turn heat from the sun or other sources into other forms of energy.

The Rice University lab of physicist Junichiro Kono led an effort with scientists at Tokyo Metropolitan University and the Rice-based Carbon Hub to make custom nanotube fibers and test their potential for large-scale applications.

Their small-scale experiments led to a fiber-enhanced, flexible cotton fabric that turned heat energy into...

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Engineers make Critical Advance in Quantum Computer Design

Dr Jarryd Pla and Prof. Andrew Dzurak look from behind a transparent screen showing mathematical workings
Dr Jarryd Pla and Professor Andrew Dzurak have solved the problem of how to reliably control not just a few, but millions of qubits. Photo: UNSW

Quantum engineers from UNSW Sydney have removed a major obstacle that has stood in the way of quantum computers becoming a reality. They discovered a new technique they say will be capable of controlling millions of spin qubits—the basic units of information in a silicon quantum processor.

Until now, quantum computer engineers and scientists have worked with a proof-of-concept model of quantum processors by demonstrating the control of only a handful of qubits.

But with their latest research, published today in Science Advances, the team have found what they consider “the missing jigsaw piece” in the quantum computer architecture that ...

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