Single Crystal Adsorption Microcalorimetry

这个研究项目，在分析和表面化学程序的支持下，以独特的方式解决了吸附在表征良好的表面上的热力学。 华盛顿大学的坎贝尔教授和他的学生研制了一种直接吸附式单晶微量热计，它具有直接测定一系列金属在氧化物和金属在半导体系统上的吸附焓的灵敏度。 此外，金属在聚合物上的吸附和碳氢化合物在铂上的吸附也正在使用这种新仪器进行研究。 这种独特的信息对于理解从电子器件制造到多相催化的各种重要表面过程至关重要。 为了理解形成许多重要界面技术的基础的表面反应化学，必须知道关于原子和分子在表面上的吸附热的基本热力学信息。 这项基础研究工作通过一种独特的实验方法直接测量这些量来解决这个问题。 这些研究的结果将在包括半导体加工和催化化学在内的技术中得到广泛的应用。

This research project, supported in the Analytical and Surface Chemistry Program, addresses the thermodynamics of adsorption on well characterized surfaces in a unique way. A direct adsorption single crystal microcalorimeter has been developed by Professor Campbell and his students at the University of Washington which has the sensitivity to directly determine the enthalpy of adsorption of a range of metal on oxide and metal on semiconductor systems. In addition, the adsorption of metals on polymers, and hydrocarbons on platinum are being investigated using this new instrument. This unique information is crucial to the understanding of a variety of important surface processes, ranging from electronic device fabrication to heterogeneous catalysis. In order to understand surface reaction chemistry, which forms the basis of many important interfacial technologies, the basic thermodynamic information about the heats of adsorption of atoms and molecules on surfaces must be known. This basic research effort addresses this question through a unique experimental approach to the direct measurement of these quantities. The results of these investigations will find wide application in technologies including semiconductor processing and catalytic chemistry.