Development of a Novel Low-Temperature Nano-Calorimeter for Low-Dimensional Materials Research and Education

开发用于低维材料研究和教育的新型低温纳米量热仪

• 批准号: 0315320
• 负责人: Jongsoo Yoon
• 金额: $ 15万
• 依托单位: University of Virginia Main Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-08-01 至 2006-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0315320&HistoricalAwards=false
• 关键词: Development; Novel; Low; Temperature; Nano

This grant provides support for the development of a novel low-temperature nano-calorimeter for low-dimensional materials research and education at the University of Virginia. This new instrument is expected to have a high heat capacity resolution to study electronic materials in a low-dimensional geometry at low temperatures. This new instrument will, for the first time, be able to explore heat capacity behaviors of low-dimensional electronic systems at extremely low temperatures. Heat capacity is one of the most fundamental physical properties as it directly probes thermodynamic quantities such as entropy. However, heat capacities of low-dimensional electronic systems have been nearly unexplored at extremely low temperatures. By measuring heat capacities of various low-dimensional systems in this unexplored regime, our calorimeter will open new horizons in studying electron and phonon densities of states, magnetic interactions and ordering, and structural or electronic phase transitions in thin film samples. Low-dimensional electronic systems have been a focus of research on modern science and technology, and will be in the future. As heat capacity would provide essential information on understanding material properties, our proposed calorimeter will have a significant impact on current and future materials research and education.

该赠款为开发一种新型的低温纳米钙仪的发展提供了支持，用于弗吉尼亚大学的低维材料研究和教育。预计该新仪器将具有高热量分辨率，可以在低温下在低维几何形状中研究电子材料。 这种新仪器将首次能够在极低的温度下探索低维电子系统的热容量行为。热容量是最基本的物理特性之一，因为它直接探测热力学量（例如熵）。但是，在极低的温度下，低维电子系统的热容量几乎没有探索。通过测量在这个未经探索的方案中各种低维系统的热能，我们的量热计将在研究状态的电子和声子密度，磁相互作用和有序以及薄膜样品中的结构或电子相变。低维电子系统一直是现代科学和技术研究的重点，并且将来将是。由于热容量将提供有关理解材料特性的重要信息，因此我们提出的量热计将对当前和未来的材料研究和教育产生重大影响。