Category Technology/Electronics

Photons collide in the void: Quantum simulation creates light out of nothing

Illustration of photon-photon scattering in the laboratory. Two green petawatt lasers beams collide at the focus with a third red beam to polarise the quantum vacuum. This allows a fourth blue laser beam to be generated, with a unique direction and colour, which conserves momemtum and energy.

Using advanced computational modelling, a research team led by the University of Oxford, working in partnership with the Instituto Superior Técnico in the University of Lisbon, has achieved the first-ever real-time, three-dimensional simulations of how intense laser beams alter the ‘quantum vacuum’ — a state once assumed to be empty, but which quantum physics predicts is full of virtual electron-positron pairs.

The results have been published in Communications Physics.
Using advanced computational modelling, a research team led by the University of Oxford, working in partnership with the Instituto Superior Técnico in the University of Lisbon, has achieved the first-ever real-time, three-dimensional simulations of how intense laser beams alter the ‘quantum vacuum’ — a state once ass...

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Laser-induced graphene enables greener, flexible hybrid circuit manufacturing

Breakthrough in flexible printed circuit boards: Laser-induced graphene enables sustainable hybrid circuit manufacturing
The process flow for creating Cu-LIG FHEs. Starting from top-left and clockwise to the right: creating a mixture of Pd and SU-8, spin-coating onto a polyimide film and drying, forming LIG from the Pd/SU-8 ink on a polyimide substrate and finally, electroless-copper plating to form conductive circuit elements. Credit: Advanced Materials Technologies (2025). DOI: 10.1002/admt.202401901

Boise State University researchers have unveiled a cutting-edge approach to manufacturing flexible hybrid circuits—reducing costs, waste, and environmental impact. Their work leverages the properties of laser-induced graphene and was recently featured on the cover of Advanced Materials Technologies.

Laser-induced graphene uses a single-step laser manufacturing process that converts carbon-rich mater...

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Twisting light for memory: New chiral photonic device enables real-time control of light polarization and data storage

As fast as modern electronics have become, they could be much faster if their operations were based on light, rather than electricity. Fiber optic cables already transport information at the speed of light; to do computations on that information without translating it back to electric signals will require a host of new optical components.

Researchers at the John and Marcia Price College of Engineering have now developed such a device: one that can be adjusted on the fly to give light different degrees of circular polarization. Because information can be stored in this chiral property of light, the researchers’ device could serve as a multifunctional, reconfigurable component of an optical computing system.

Led by Weilu Gao, assistant professor in the Department of Electrical & C...

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‘Intercrystals’ pave the way for greener electronics and quantum technologies

An intercrystal formed by overlaying twisted graphene on hexagonal boron nitride.
Andrei Lab

Rutgers University–New Brunswick researchers have discovered a new class of materials—called intercrystals—with unique electronic properties that could power future technologies.

Intercrystals exhibit newly discovered forms of electronic properties that could pave the way for advancements in more efficient electronic components, quantum computing and environmentally friendly materials, the scientists said.

As described in a report in the science journal Nature Materials, the scientists stacked two ultrathin layers of graphene, each a one-atom-thick sheet of carbon atoms arranged in a hexagonal grid...

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