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Suspended lithium niobate acoustic resonators with Damascene electrodes for radiofrequency filtering

Data rates and volume for mobile communication are ever-increasing with the growing number of users and connected devices. With the deployment of 5G and 6G on the horizon, wireless communication is advancing to higher frequencies and larger bandwidths enabling higher speeds and throughput. Current micro-acoustic resonator technology, a key component in radiofrequency front-end filters, is struggling to keep pace with these developments. This work presents an acoustic resonator architecture enabling multi-frequency, low-loss, and wideband filtering for the 5G and future 6G bands located above 3 GHz. Thanks to the exceptional performance of these resonators, filters for the 5G n77 and n79 bands are demonstrated, exhibiting fractional bandwidths of 25% and 13%, respectively, with low insertion loss of around 1 dB. With its unique frequency scalability and wideband capabilities, the reported architecture offers a promising option for filtering and multiplexing in future mobile devices.

Stettler, S., Villanueva, L.G. Suspended lithium niobate acoustic resonators with Damascene electrodes for radiofrequency filtering. Microsyst Nanoeng 11, 131 (2025). https://doi.org/10.1038/s41378-025-00980-w.

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Starlink is preparing a breakthrough: 3rd generation satellites with terabit speed will be launched in 2026

SpaceX continues to actively develop the Starlink satellite internet project. Over the past year, the service has significantly improved speed and stability and expanded to new territories. In the coming years, Starlink will receive more powerful third-generation satellites that will increase the channel’s capacity by an order of magnitude and allow it to serve more people.

World Record Achieved in Transmission Capacity and Distance: With 19-core Optical Fiber with Standard Cladding Diameter 1,808 km Transmission of 1.02 Petabits per Second

An international research team led by the Photonic Network Laboratory at the National Institute of Information and Communications Technology (NICT, President: TOKUDA Hideyuki Ph.D.), and including Sumitomo Electric Industries, Ltd. (Sumitomo Electric, President: INOUE Osamu) have set a new world record in optical fiber communications, achieving data transmission at 1.02 petabits per second over a distance of 1,808 kilometers (roughly equivalent to the distance from Sapporo to Fukuoka, from Missouri to Montana or from Berlin to Naples).

Tesla’s FSD Advantage Just Became Critical

Tesla’s technological advancements and strategic investments in autonomous driving, particularly in its Full Self-Driving technology, are giving the company a critical and potentially insurmountable lead in the industry ## Questions to inspire discussion.

Tesla’s AI and autonomous driving advancements.

🚗 Q: When will Tesla’s Dojo 2 supercomputer start mass production? A: Tesla’s Dojo 2 supercomputer is set to begin mass production by the end of 2025, providing a significant advantage in autonomous driving and AI development.

🧠 Q: How does Tesla’s AI system Grok compare to other AI? A: According to Jeff Lutz, Tesla’s AI system Grok is now the smartest AI in the world and will continue to improve with synthetic data training.

🚕 Q: What advantages does Tesla have in autonomous driving development? A: Tesla’s Full Self-Driving (FSD) technology allows the company to collect and use real-world data for AI model training, giving it a significant edge over competitors relying on simulated or internet data.

Tesla’s Operational Excellence.

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A chaos-modulated metasurface for physical-layer secure communications

With so many people using devices that can be connected to the internet, reliably securing wireless communications and protecting the data they are exchanging is of growing importance. While computer scientists have devised increasingly advanced security measures over the past decades, the most effective techniques rely on complex algorithms and intensive computations, which can consume a lot of energy.

Researchers at Peking University, Southeast University, University of Sannio and other institutes recently introduced a new approach for securing communications both effectively and energy-efficiently, which relies on a reconfigurable metasurface with properties that are modulated by chaotic patterns.

This approach, outlined in a paper published in Nature Communications, is based on an idea conceived by the senior authors Vincenzo Galdi, Lianlin Li and Tie Jun Cui, who oversaw the project. The idea was then realized at Peking University and Southeast University by junior authors JiaWen Xu Menglin Wei and Lei Zhang.

Japan breaks internet speed record with 1.02 Pbps, it can download all of Netflix in 1 second

Japan has set a new world record for internet speed, reaching 1.02 petabits per second, according to the country’s National Institute of Information and Communications Technology (NICT). That’s fast enough to download the entire Netflix library or the English version of Wikipedia thousands of times in just one second.

To compare, this new speed is 16 million times faster than India’s average internet speed of about 63.55 Mbps and 3.5 million times faster than the average internet speed in the United States, based on current data.

Quantum networks of clocks open the door to probe how quantum theory and curved space-time intertwine

Quantum networking is being rapidly developed world-wide. It is a key quantum technology that will enable a global quantum internet: the ability to deploy secure communication at scale, and to connect quantum computers globally. The race to realize this vision is in full swing, both on Earth and in space.

New research, in collaboration between Igor Pikovski at Stevens Institute of Technology, Jacob Covey at the University of Illinois at Urbana-Champaign and Johannes Borregaard at Harvard University, suggests that are more versatile than previously thought.

In the paper titled “Probing Curved Spacetime with a Distributed Atomic Processor Clock”, published in the journal PRX Quantum, the researchers show that this technology can probe how curved space-time affects —a first test of this kind.