United KingdomResearchers at the UCLA Samueli School of Engineering have discovered that phonons—quantum vibrations responsible for carrying heat—can travel in focused, ray-like paths at room temperature, rather than spreading uniformly. This phenomenon, known as phonon focusing, was previously only observable at extremely low temperatures. The study, published in Nature Physics, used boron arsenide, a high-conductivity semiconductor, to demonstrate that heat can be directed along precise pathways defined by the material’s crystal structure. Using a novel nanoscale temperature-mapping technique, the team observed ray-like heat patterns in boron arsenide, unlike the circular diffusion seen in conventional materials. The findings suggest that controlling heat flow at the nanoscale could lead to advancements in thermal management for electronics, quantum computing, and other technologies.
Bias read (Center): The article discusses a scientific breakthrough in heat management using quantum phenomena. It presents factual research findings without ideological framing, emphasizing technical details and implications for technology development. There is no political controversy or partisan interpretation in报道.
