HomeFeatured Experimental Platform #2 Vacuum Phonon Heat Transfer
Release date: 2025-05-16
Visits: 21
Source: 山东高等技术研究院
Vacuum Phonon Heat Transfer
When two objects are extremely close to each other in the vacuum, phonons will participate in heat transfer across the vacuum gap. However, the strict experimental requirements of nanoscale spacing and measurement disturbances from various near-field mechanisms have limited research on vacuum phonon heat transfer primarily to theoretical analysis. Thus, further experiments are needed to fully elucidate the mechanisms of vacuum phonon heat transfer.
Based on the fundamental research problem of vacuum phonon heat transfer, the thermal science team built the vacuum phonon heat transfer platform, mainly conducting precise and effective measurements of phonon heat transfer at nanometer distances and theoretical research on heat transfer mechanisms. The experiment involves the preparation of a nanoscale thin film system and the use of optical interference techniques to achieve nanoscale spacing control at a resolution of 4 nm. Leveraging this experimental platform, the research team investigated gold-plated silicon and silicon nitride thin film systems, and obtained temperature-driven thermal motion information at nanometer spacing by measuring the intrinsic frequency and power spectral density. This study provides important theoretical and experimental support in revealing the essence of heat transport. In addition, the universality of this platform allows it to be used not only for microscopy imaging, high parallelism nanometer spacing control, and phonon heat transfer measurements, but also for precision measurement experiments such as high-sensitivity vibration measurements and vacuum Casimir force gradient measurements.
Based on the fundamental research problem of vacuum phonon heat transfer, the thermal science team built the vacuum phonon heat transfer platform, mainly conducting precise and effective measurements of phonon heat transfer at nanometer distances and theoretical research on heat transfer mechanisms. The experiment involves the preparation of a nanoscale thin film system and the use of optical interference techniques to achieve nanoscale spacing control at a resolution of 4 nm. Leveraging this experimental platform, the research team investigated gold-plated silicon and silicon nitride thin film systems, and obtained temperature-driven thermal motion information at nanometer spacing by measuring the intrinsic frequency and power spectral density. This study provides important theoretical and experimental support in revealing the essence of heat transport. In addition, the universality of this platform allows it to be used not only for microscopy imaging, high parallelism nanometer spacing control, and phonon heat transfer measurements, but also for precision measurement experiments such as high-sensitivity vibration measurements and vacuum Casimir force gradient measurements.
