Quantum fluctuations give rise to a new type of topological semimetal
Peer-Reviewed Publication
Updates every hour. Last Updated: 21-Jun-2026 13:16 ET (21-Jun-2026 17:16 GMT/UTC)
A problem in quantum computing called “quantum scrambling” hampers the technology’s development. Scrambling results in the loss of data in a quantum computing system, an issue previously thought to be irreversible. A UC Irvine team has discovered a way to reverse the scrambling process.
Researchers have developed a predictive energy management framework for megawatt-class parallel hybrid-electric regional aircraft, showing how coordinated control of engines, electric motors, and aircraft dynamics could improve both environmental and operational performance. The study suggests that hybrid-electric propulsion in regional aviation may gain a meaningful advantage not only from hardware electrification itself, but from how intelligently power is allocated throughout a flight mission.
UBC researchers have developed a natural, biodegradable wash that removed up to 96 per cent of pesticide residue and slowed browning and moisture loss in tested apples and grapes.
Researchers have developed a multi-fidelity framework for lithium-ion battery lifespan prediction that combines coupled degradation mechanisms with machine learning, aiming to improve early prediction of both battery knee point and remaining useful life. The work addresses a major challenge in battery management: how to make reliable forecasts before long-term aging data have accumulated, when operators still have time to act on the results.
Researchers have developed a nonlinear galloping-driven triboelectric-electromagnetic hybrid generator for harvesting low-speed wind energy, offering a new route toward self-powered sensors and distributed energy devices that can operate under weak and fluctuating airflow. The system, referred to as NG-TEHG, combines triboelectric and electromagnetic conversion with a nonlinear galloping structure, and the results suggest that this hybrid design can work over a relatively wide wind-speed range while producing enough power to support practical electronics such as wireless sensing nodes.
As humanity's exploration of the Earth's internal structure deepens, Earth's free oscillations, serving as crucial "fingerprints" for revealing the large-scale structure and dynamic processes within the Earth, have always been a core subject in geophysics. Ground-based station observations are currently the mainstream method for measuring Earth's free oscillations. With the advancement of space technology, high-precision inter-satellite distance measurement holds the potential to become a novel method for detecting these oscillations.
In a recent paper published in Space: Science & Technology, a research team from the School of Physics and Astronomy at Sun Yat-sen University, in collaboration with the TianQin Research Center for Gravitational Physics, proposed a novel detection and analysis method for Earth's free oscillations utilizing the "TianQin" space-borne gravitational wave detector. The study constructed a theoretical response model for Earth's free oscillations within the TianQin detector and derived their analytical waveform for high-orbit satellite laser interferometric measurements. Through numerical simulation and Bayesian parameter estimation, the research team demonstrated that for a major seismic event like the 2008 Wenchuan earthquake, TianQin could achieve a clear detection with a signal-to-noise ratio as high as 73 and independently distinguish at least nine different free oscillation modes.
This research not only methodologically demonstrates for the first time the feasibility of directly detecting Earth's free oscillations using high-orbit gravitational wave detectors, but also pioneers a new interdisciplinary pathway integrating space-based gravity measurement with geophysical research. By leveraging the frequency splitting effect introduced by satellite orbital motion, this method can circumvent calibration errors inherent in traditional multi-station observations, enabling more independent and precise probing of Earth's internal structure. This work significantly expands the interdisciplinary application scope for China's autonomous space science mission—the TianQin project—and provides novel theoretical tools and technical reserves for future space-based exploration of Earth's internal structure and seismic mechanisms.