Category Technology/Electronics

Deep Learning-designed Diffractive Processor Computes Hundreds of Transformations in Parallel

Massively parallel universal linear transformations using a wavelength-multiplexed diffractive deep neural network. Image courtesy of Ozcan Research Group, UCLA.

In today’s digital age, computational tasks have become increasingly complex. This, in turn, has led to an exponential growth in the power consumed by digital computers. Thus, it is necessary to develop hardware resources that can perform large-scale computing in a fast and energy-efficient way.

In this regard, optical computers, which use light instead of electricity to perform computations, are promising. They can potentially provide lower latency and reduced power consumption, benefiting from the parallelism that optical systems have. As a result, researchers have explored various optical computing designs.

For instan...

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Electronic Bridge allows Rapid Energy Sharing between Semiconductors

Artistic depiction of electron transfer driven by an ultrashort laser pulse, across an interface between two atomically-thin materials.
Artistic depiction of electron transfer driven by an ultrashort laser pulse, across an interface between two atomically-thin materials. This transfer is facilitated by an interlayer ‘bridge’ state that electrons are able to access due to lattice vibrations in both materials. (Credit: Gregory M. Stewart/SLAC)

As semiconductor devices become ever smaller, researchers are exploring two-dimensional (2D) materials for potential applications in transistors and optoelectronics. Controlling the flow of electricity and heat through these materials is key to their functionality, but first we need to understand the details of those behaviors at atomic scales.

Now, researchers have discovered that electrons play a surprising role in how energy is transferred between layers of 2D semiconductor m...

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Strengthening Electron-triggered Light Emission

Decorative image resembling triangular prism and colorful lights.
Caption: Researchers have found a way to create much stronger interactions between photons and electrons, in the process producing a hundredfold increase in the emission of light from a phenomenon called Smith-Purcell radiation.
Credits:Courtesy of the researchers

A new method can produce a hundredfold increase in light emissions from a type of electron-photon coupling, which is key to electron microscopes and other technologies.

Researchers have found a way to create much stronger interactions between photons and electrons, in the process producing a hundredfold increase in the emission of light from a phenomenon called Smith-Purcell radiation. The finding has potential implications for both commercial applications and fundamental scientific research.

The way electrons interact w...

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Self-powered, Printable Smart Sensors created from Emerging Semiconductors could mean Cheaper, Greener Internet of Things

Wirelessly powered large-area electronics for the Internet of Things |  Nature Electronics
 LAE sensor nodes for sustainable IoT

Creating smart sensors to embed in our everyday objects and environments for the Internet of Things (IoT) would vastly improve daily life — but requires trillions of such small devices. Simon Fraser University professor Vincenzo Pecunia believes that emerging alternative semiconductors that are printable, low-cost and eco-friendly could lead the way to a cheaper and more sustainable IoT.

Leading a multinational team of top experts in various areas of printable electronics, Pecunia has identified key priorities and promising avenues for printable electronics to enable self-powered, eco-friendly smart sensors. His forward-looking insights are outlined in his paper published on Dec. 28 in Nature Electronics.

“Equipping everyday objects and envir...

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