In this breakthrough acoustic experiment, researchers have directly observed anti-Klein tunneling—a quantum-like phenomenon where chiral sound waves are entirely blocked by a barrier. Using a tunable bilayer phononic crystal, the team demonstrated switchable transitions between full transmission and total reflection, mimicking quantum paradoxes with sound. This work confirms a long-standing theoretical prediction and opens new possibilities for topological wave control and quantum-inspired acoustic devices.

Forecasting electricity demand in buildings is now more accurate with Group Encoding (GE), a new method that uses only existing device operation data. Developed by researchers at the Institute of Science Tokyo, the method improved prediction accuracy by 74% in real-world tests. By simplifying high-dimensional binary data, GE supports efficient energy device management, cost reduction, and seamless integration of renewable energy in distributed systems, making it a practical tool for smart energy operation.