Alessandro Martinelli, Jacopo Baglioni, P. Sun, Francesco Dallari, E. Pineda, Yajuan Duan, Tobias Spitzbart-Silberer, F. Westermeier, Michael Sprung, G. Monaco
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引用次数: 0
摘要
同步辐射技术是研究材料的有力工具。尤其是高亮度光源的出现,为开发对原子尺度动态敏感的技术提供了可能,如 X 射线光子相关光谱(XPCS)。XPCS 与玻璃研究尤为相关,而玻璃研究通常通过差示扫描量热法等方法进行宏观研究。在此,我们展示了如何调整闪存热量计,将 XPCS 和量热扫描结合起来。这种设置为需要动力学和热力学信息的新型实验铺平了道路,包括从结晶动力学研究到玻璃化体系的玻璃化转变研究。
A new experimental setup for combined fast differential scanning calorimetry and X-ray photon correlation spectroscopy.
Synchrotron-radiation-based techniques are a powerful tool for the investigation of materials. In particular, the availability of highly brilliant sources has opened the possibility to develop techniques sensitive to dynamics at the atomic scale such as X-ray photon correlation spectroscopy (XPCS). XPCS is particularly relevant in the study of glasses, which have been often investigated at the macroscopic scale by, for example, differential scanning calorimetry. Here, we show how to adapt a Flash calorimeter to combine XPCS and calorimetric scans. This setup paves the way to novel experiments requiring dynamical and thermodynamic information, ranging from the study of the crystallization kinetics to the study of the glass transition in systems that can be vitrified thanks to the high cooling rates reachable with an ultrafast calorimeter.
期刊介绍:
Synchrotron radiation research is rapidly expanding with many new sources of radiation being created globally. Synchrotron radiation plays a leading role in pure science and in emerging technologies. The Journal of Synchrotron Radiation provides comprehensive coverage of the entire field of synchrotron radiation and free-electron laser research including instrumentation, theory, computing and scientific applications in areas such as biology, nanoscience and materials science. Rapid publication ensures an up-to-date information resource for scientists and engineers in the field.