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University of Arizona scientists unveil breakthrough petahertz-speed transistor

A team of scientists has unveiled a breakthrough that could one day propel computers to operate at speeds millions of times faster than today’s most advanced processors.

The discovery, led by researchers at the University of Arizona and their international collaborators, centers on harnessing ultrafast pulses of light to control the movement of electrons in graphene – a material just one atom thick.

The research, recently published in Nature Communications, demonstrates that electrons can be made to bypass barriers almost instantaneously by firing laser pulses lasting less than a trillionth of a second at graphene. This phenomenon, known as quantum tunneling, has long intrigued physicists, but the team’s ability to observe and manipulate it in real time marks a significant milestone.

Rooftop solar and EV batteries could supply 85% of Japan’s electricity needs

A new study led by Tohoku University has revealed that rooftop solar panels, when combined with electric vehicles (EVs) as batteries, could supply 85% of Japan’s electricity demand and reduce carbon dioxide emissions by 87%. The research provides a promising pathway for Japan’s local governments to achieve carbon neutrality by taking advantage of existing infrastructure—rooftops and vehicles—rather than relying solely on large-scale energy systems.

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