MRI-R2: Acquisition of X-ray diffractometer for nano-bio materials and earth sciences research

0960256Datye“该奖项是根据2009年美国复苏和再投资法案(公法111-5)资助的。”这项建议旨在获得一台粉末X射线衍射仪，用于推进纳米生物材料以及地球和行星科学的研究和教育。这个研究级的仪器将增加几个新的能力，这是目前在新墨西哥州大学校园里没有的。其中包括用于薄膜的平行束聚焦和用于生物传感器和药物输送的介孔二氧化硅的小角x射线衍射；将能够收集稀有陨石样品、微生物活动产生的矿物以及古代陶器微观衍射数据的单毛细管准直光学系统；用于燃料电池催化剂和生物可再生能源转化催化剂的受控环境反应研究的现场反应室；地质材料中气固反应的实时实验研究；以及锂离子电池空气敏感电极的研究。特殊的样品台将允许对自旋电子学和磁制冷非常感兴趣的铁磁材料进行新的实验。该仪器的高质量数据将允许通过Reitveld方法对晶体结构和物相组成进行定量测定。新的X射线衍射仪将取代大量使用的Scintag Pad V粉末衍射仪，Scintag Pad V粉末衍射仪于1984年安装，并在过去25年中连续运行(维修和维护期间通常停机)。该实验室是UNM和里奥格兰德走廊沿线研究人员的关键资源，用户来自当地工业界以及来自邻近机构的学者。在过去十年的运作中，来自该校12个不同部门的60多名不同用户亲身使用了该仪器。实验室目前有40名合格的注册用户，其中25人目前正在定期使用该实验室。用户数量受到数据采集速度的严重限制。新类型分析能力的极大扩展和数据收集速度的提高将导致目前的用户群在运行的第一年内大幅扩大(可能高达100%)。目前，X射线衍射仪实验室是格兰德河走廊上唯一的开放式访问设施，可供其他学术机构的同事使用，如NM理工学院。

0960256Datye"This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5)."This proposal seeks to acquire a powder x-ray diffractometer for advancing research and education in nano-bio materials and in earth and planetary sciences. This research grade instrument will add several new capabilities not currently available anywhere on the UNM campus. These include parallel beam focusing for thin film and small angle x-ray diffraction from mesoporous silica used for biosensors and drug delivery; monocapillary collimation optics that will enable collection of microdiffraction data from rare meteorite samples, minerals produced by microbial activity as well as ancient pottery; in-situ reaction chamber for controlled environment reaction studies of fuel cell catalysts and catalysts for conversion of biorenewables, real-time experimental studies of gas-solid reactions in geologic materials, and for study of air sensitive electrodes for lithium ion batteries. The special sample stages will allow the performance of new experiments on ferromagnetic materials of great interest for spintronics and magnetic refrigeration. The higher quality data from this instrument will allow quantitative determinations of crystal structures and phase compositions via Reitveld methods. The new XRD will replace a heavily used Scintag Pad V powder diffractometer that was installed in 1984 and has been operated continuously over the past 25 years (with the usual downtime for repairs and maintenance). The laboratory serves as a key resource for researchers at UNM and along the Rio Grande corridor, with users from local industry as well as academics from neighboring institutions. In the past ten years of operation, over 60 different users from twelve different departments on the UNM campus have had hands-on access to this instrument.The lab currently has forty qualified and registered users, 25 of whom are currently using the laboratory on a regular basis. The number of users is severely limited by the speed of data acquisition. The greatly expanded capabilities for new types of analysis and increased speed of data collection will lead to a significant expansion of the current user base (possibly by as much as 100%) within the first year of operation. At present the XRD laboratory is the only open access facility in the Rio Grande corridor and is available to colleagues at other academic institutions, such as NM Tech.