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    Category Technology/Electronics

    Topological antenna could pave the way for 6G networks

    February 10, 2026, Categories  Technology/Electronics, Physics

    Topological antenna could pave the way for 6G networks
    On-chip THz topological LWA. Credit: Nature Photonics (2026). DOI: 10.1038/s41566-025-01825-8

    Using ideas borrowed from topological photonics, researchers in Singapore, France and the US have designed a compact antenna capable of handling information-rich terahertz (THz) signals. Reporting their results in Nature Photonics, the team, led by Ranjan Singh at the University of Notre Dame, say that with further refinements, the design could help underpin future sixth-generation (6G) wireless networks, allowing data to be shared at unprecedented speeds.

    Why 6G needs terahertz antennas
    In the not-too-distant future, 6G networks are expected to enable data rates of around one terabit per second—the same as transferring roughly half the storage of a mid-range smartphone in a single second...

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    Is artificial general intelligence already here? A new case that today’s LLMs meet key tests

    February 8, 2026, Categories  Physics, Technology/Electronics

    ai brain
    Credit: Pixabay/CC0 Public Domain

    Will artificial intelligence ever be able to reason, learn, and solve problems at levels comparable to humans? Experts at the University of California San Diego believe the answer is yes—and that such artificial general intelligence has already arrived. This debate is tackled by four faculty members spanning humanities, social sciences, and data science in a recently published Comment invited by Nature.

    Computer scientist Alan Turing first posed this question in his landmark 1950 paper, though he didn’t use the term artificial general intelligence (AGI). His “imitation game,” now known as the Turing Test, asked whether a machine could pass as human in text-based conversation with humans. Seventy-five years later, that future is here.

    Over the p...

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    Unhackable metasurface holograms: Security technology can lock information with light color and distance

    February 5, 2026, Categories  Physics, Technology/Electronics

    Schematic of secure holography using a reconfigurable stacked metasurface based on a modular diffractive deep neural network. Each metasurface layer independently reconstructs distinct wavelength-encoded holograms (e.g., ID and QR). When two layers are aligned at a specific interlayer spacing, the system is trained to reveal an encrypted hologram (PW). Because decryption is enabled by the combined choice of wavelength and interlayer spacing as physical decoding keys, the information can be retrieved without electronic computation. This single platform integrates standalone (layer-wise), combinational (cipher), and multi-wavelength functionalities, enabling a photonic security platform for optical encryption and data storage. Credit: POSTECH

    A research team led by Professor Junsuk Rho a...

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    Physicists achieve near-zero friction on macroscopic scales

    February 5, 2026, Categories  Physics, Technology/Electronics

    Physicists achieve near-zero friction on macroscopic scales
    Macroscale structural superlubricity at graphite/graphite and graphite/MoS2 interfaces. Credit: Minhao Han et al.

    For the first time, physicists in China have virtually eliminated the friction felt between two surfaces at scales visible to the naked eye. In demonstrating “structural superlubricity,” the team, led by Quanshui Zheng at Tsinghua University, have resolved a long-standing debate surrounding the possibility of the effect. Published in Physical Review Letters, the result could potentially lead to promising new advances in engineering.

    What structural superlubricity promises
    When two objects slide over each other, any roughness on their surfaces will almost inevitably resist the motion, creating the force of friction...

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