Atom Probe Tomography (APT) Workshop for Earth Sciences

地球科学原子探针断层扫描 (APT) 研讨会

• 批准号: 1560779
• 负责人: Alberto Perez-Huerta
• 金额: $ 4.7万
• 依托单位: University of Alabama Tuscaloosa
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-11-15 至 2016-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1560779&HistoricalAwards=false
• 关键词: Atom; Probe; Tomography; APT; Workshop

This award will provide funding to organize a workshop centered on atom-probe tomography for geoscientists. Atom-probe tomography is the highest spatial resolution analytical technique in existence for the characterization of materials. However, atom-probe tomography is practically unknown to the geosciences community despite offering clear benefits to researchers in Earth Sciences. The aim of the workshop is to establish an open forum for the discussion of the potential uses and benefits of this technique, while providing information to colleagues from a geological perspective. Besides the invitation of senior researchers, an additional goal of this workshop is the participation of graduate students.The strength of this technique relies in the possibility of combining a 3D material reconstruction with chemical composition, including isotopes, at atomic scale with a near part-per-million analytical sensitivity. Recent advances in field emission microscopy and the atom probe technique have allowed the preliminary analysis of geological materials. First results from the APT application to minerals have provided significant geochemical information at a spatial resolution that is not achieved with any current methodology. Thus, atom-probe tomography is emerging as a powerful technique that can revolutionize research in geochemistry and re-shape our understanding of geological processes from the nanoscale to the continental scale.

该奖项将为地球科学家组织一个以原子探针断层成像为中心的研讨会提供资金。原子探针层析成像是目前表征材料的最高空间分辨率的分析技术。然而，尽管原子探针断层扫描为地球科学研究人员提供了明显的好处，但对地球科学界来说，它实际上是未知的。讲习班的目的是建立一个公开论坛，讨论这项技术的潜在用途和益处，同时从地质角度向同事提供信息。除了邀请资深研究人员外，本次研讨会的另一个目标是研究生的参与。这项技术的优势在于，它可以在原子尺度上将3D材料重建与化学成分（包括同位素）结合起来，分析灵敏度接近百万分之一。场发射显微镜和原子探针技术的最新进展使对地质材料的初步分析成为可能。首先，APT应用于矿物的结果提供了重要的地球化学信息，其空间分辨率是目前任何方法都无法实现的。因此，原子探针层析成像正在成为一种强大的技术，它可以彻底改变地球化学研究，重塑我们对从纳米尺度到大陆尺度的地质过程的理解。