MRI: Development of Next Generation Hydrothermal Atomic Force Microscopy

MRI：下一代水热原子力显微镜的发展

• 批准号: 1429545
• 负责人: Carrick Eggleston
• 金额: $ 48.35万
• 依托单位: University of Wyoming
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-09-01 至 2018-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1429545&HistoricalAwards=false
• 关键词: MRI; Development; Next; Generation; Hydrothermal

1429545EgglestonThis Major Research Instrumentation (MRI) Program grant supports the development of an atomic force microscope (AFM) capable of in situ imaging of mineral dissolution and growth in aqueous solutions at unprecedented hydrothermal conditions of temperature and pressure (up to 200 degrees C and 20 bars) and will advance molecular-scale imaging capabilities afforded through new scanning probe tip design. The development builds upon a previously successful hydrothermal cell AFM (HAFM) that has the proven capabilities to imagine mineral surface processes in solution but at more limited P/T conditions (P = 12 bars; T = 150 degrees C). The higher P/T space that should be achievable with a so-called next generation HAFM (ngHAFM) will allow for study of the processes of dissolution of aluminosilicates and other refractory phases in aqueous solution under hydrothermal conditions as well as observation of any precipitation of new fragile mineral surface overgrowth phases given that dissolution and mineralization kinetics should be rapid enough to achieve stable AFM imaging to observe these processes. Application to study of host rock demineralization and mineralization consequences of subsurface carbon dioxide sequestration, study of mineral extraction processes, characterization of the robustness of solar panel photovoltaic materials under extreme conditions and studies of material corrosion processes should be advanced by this technology. The development will engage collaboration between an academic institution (the University of Wyoming) and a commercial sector partner (Asylum Research) and will train a postdoctoral researcher in instrument design, fabrication and testing. The potential for patentable technology resultant from this development project is significant.***

1429545 Eggleston这个主要的研究仪器（MRI）计划拨款支持原子力显微镜（AFM）的发展，能够在前所未有的水热条件下的温度和压力（高达200摄氏度和20巴）的水溶液中的矿物溶解和生长的原位成像，并将通过新的扫描探针尖端设计提供先进的分子尺度成像能力。 该开发建立在先前成功的热液池AFM（HAFM）的基础上，该AFM具有在溶液中想象矿物表面过程的能力，但在更有限的P/T条件下（P = 12巴; T = 150摄氏度）。 所谓的下一代HAFM（ngHAFM）应该可以实现更高的P/T空间将允许在水热条件下研究铝硅酸盐和其他耐火相在水溶液中的溶解过程，以及观察新的易碎矿物表面过度生长相的任何沉淀，因为溶解和矿化动力学应该足够快以实现稳定的AFM成像来观察这些流程. 应用于研究主岩脱矿和矿化地下二氧化碳封存的后果，矿物提取过程的研究，在极端条件下的太阳能电池板光伏材料的鲁棒性的表征和材料腐蚀过程的研究，应推进这项技术。 该开发项目将涉及学术机构（怀俄明州大学）和商业部门合作伙伴（庇护研究）之间的合作，并将培训仪器设计，制造和测试方面的博士后研究人员。 该开发项目产生的可申请专利的技术潜力巨大。*