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

0960256 Datye“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。“这项提议旨在获得一台粉末X射线衍射仪，以推进纳米生物材料以及地球和行星科学的研究和教育。这种研究级仪器将增加几个新的功能，目前在UNM校园的任何地方都没有。其中包括用于生物传感器和药物输送的中孔二氧化硅的薄膜和小角度X射线衍射的平行光束聚焦;单毛细管准直光学器件，该光学器件将能够从稀有陨石样品、微生物活动产生的矿物以及古代陶器中收集微衍射数据;用于燃料电池催化剂和生物可再生物转化催化剂的受控环境反应研究的原位反应室，地质材料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方法定量测定晶体结构和相组成。新的XRD将取代1984年安装的大量使用的Scintag Pad V粉末衍射仪，该仪器在过去25年中一直在持续运行（通常会停机进行维修和维护）。该实验室是新墨西哥大学和沿着格兰德河走廊的研究人员的关键资源，用户来自当地工业以及邻近机构的学者。在过去的十年中，来自新墨西哥大学校园12个不同部门的60多个不同的用户亲自使用了这台仪器。实验室目前有40名合格的注册用户，其中25人目前定期使用实验室。用户数量受到数据采集速度的严重限制。新类型分析的能力大大扩大，数据收集速度加快，将导致在运作的第一年内，现有用户基础大幅度扩大（可能多达100%）。目前，XRD实验室是格兰德河走廊唯一的开放式设施，可供其他学术机构的同事使用，如NM Tech。

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.