Boyle, 85 Commercial Road, Melbourne, Victoria, Australia. Phone: 61.3.9282.2111; Email: [email protected].
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1Burnet Institute, Melbourne, Victoria, Australia.
Boyle, 85 Commercial Road, Melbourne, Victoria, Australia. Phone: 61.3.9282.2111; Email: [email protected].
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1Burnet Institute, Melbourne, Victoria, Australia.
Guryanova, 1,200 Newell Drive, PO Box 100,267, Gainesville, Florida, 32,610, USA. Phone: 352.294.8590; Email: [email protected].
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1University of Florida College of Medicine, Gainesville, Florida, USA.
Integrated circuits are the brains behind modern electronic devices like computers or smart phones. Traditionally, these circuits—also known as chips—rely on electricity to process data. In recent years, scientists have turned their attention to photonic chips, which perform similar tasks using light instead of electricity to improve speed and energy efficiency.
The Tamagotchi craze started during the 1990s, with the original electronic toys. Years before our smartphone obsession, Tamagotchis were pixelated pets you carried around, often on a keychain. You had tiny rubber buttons and a miniature screen to feed, clean, and take care of your Tamagotchi. If you failed, you returned to a tiny digital tombstone.
In recent years, Tamagotchis have made an unlikely comeback. But now, a team of students at Northeastern University want to build something much more real.
SquidKid looks like a whimsical cartoon squid, but it’s actually a “bioreactor,” essentially a biological life support system. Inside it, floating in a special “broth”, are millions of real, living, glowing bacteria. The students who designed it are blunt.
Acoustic frequency filters, which convert electrical signals into miniaturized sound waves, separate the different frequency bands for mobile communications, Wi-Fi, and GPS in smartphones. Physicists at RPTU have now shown that such miniaturized sound waves can couple strongly with spin waves in yttrium iron garnet. This results in novel hybrid spin-sound waves in the gigahertz frequency range.
The use of such nanoscale hybrid spin-sound waves provides a pathway for agile frequency filters for the upcoming 6G mobile communications generation. The fundamental study by the RPTU researchers has been published in the journal Nature Communications.
Surface acoustic waves (SAWs) are ubiquitous. They unleash destructive power in the form of earthquake waves but are also at the heart of miniaturized frequency filters that are used billions of times for GHz-frequency mobile communication in smartphones.