Acquisition of a scanning electron microscope with integrated EDS for enhancement of multi-disciplinary undergraduate research and research training

购置一台集成 EDS 的扫描电子显微镜，以加强多学科本科生研究和研究培训

• 批准号: 1919569
• 负责人: Erik Klemetti
• 金额: $ 39.8万
• 依托单位: Denison University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-09-01 至 2021-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1919569&HistoricalAwards=false
• 关键词: Acquisition; scanning; electron; microscope; integrated

Acquisition of a field emission scanning electron microscope at Denison University Geosciences DepartmentDenison University's Geosciences Department will acquire a field emission scanning electron microscope (SEM) to measure chemical composition and structure of many materials. The instrument will enhance faculty research, carried out with talented undergraduate students at Denison. The instrument will support research in many areas including analysis of magmatic processes to improve understanding of volcanic history and development of new electronic materials and electrodes that could lead to sustainable technologies and efficient energy sources. Access to leading-edge technology is critical for undergraduate institutions like Denison's small liberal arts college that is residential in nature and geographically isolated; it enables training of a competitive workforce and prepares scientific leaders. The project is led by young, diverse faculty who will use the SEM for years to come for their research, teaching, and community engagement. Denison has several programs to support underrepresented minority groups in the sciences. Experience using a state-of-the-art analytical instrument is especially important for these students who apply to graduate school or enter the workforce after their college careers. Denison's rural location will draw collaborators to this SEM facility from nearby institutions, including local schools, colleges, and regional campuses, that would not otherwise have access to such facilities. The award is made to Denison University to support the acquisition of a field emission scanning electron microscope (FE-SEM), with integrated energy dispersive spectroscopy (EDS) and cathodoluminescence (CL) for elemental analysis and characterization, along with sample preparation equipment. The state-of-the-art instrument will greatly enhance current research and open new lines of inquiry for faculty and student research, research training, and teaching across the science divisions at Denison, including the Departments of Geosciences, Chemistry and Biochemistry, and Biology. The instrument's capabilities are customized to support the needs of science faculty externally and internally funded research: (1) high resolution and high magnification characterization and imaging of a wide variety of materials; (2) qualitative, semi-quantitative and quantitative analysis for crystals and other materials, both natural and synthetic, via EDS and CL; and (3) variable pressure capability for versatility in imaging and analysis of low- to non-conducting, as well as wet, samples. Specifically, in Geosciences, the SEM-EDS/ CL will allow for quantification of the zoning of igneous crystals and composition of glass in volcanic rocks and tephra, and for the evaluation of grain coatings on soil and fluvial sediment for gamma spectroscopy and documentation of diagenetic alteration in fossil bivalve mollusks prior to isotopic analysis. In Chemistry and Biochemistry, the instrument will support multiple avenues of functional materials development, including novel laser-writable charge-transfer liquid crystals, as well as the imaging of nanostructured photoelectrodes and catalysts for physical characterization and determination of the elemental composition of mixed-metal dopants by EDS. Finally, in Biology, the instrument will allow for the examination of surface structures and anatomy of immature and mature flowers under low vacuum or processed using the critical point dryer.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

丹尼森大学地球科学系购置场发射扫描电子显微镜丹尼森大学地球科学系将购置场发射扫描电子显微镜（SEM），用于测量许多材料的化学成分和结构。该仪器将加强教师的研究，在丹尼森与有才华的本科生进行。该仪器将支持许多领域的研究，包括分析岩浆过程，以增进对火山历史的了解，以及开发新的电子材料和电极，从而实现可持续技术和高效能源。获得尖端技术对于丹尼森的小型文科学院这样的本科院校至关重要，该学院本质上是住宅，地理位置孤立;它可以培养有竞争力的劳动力，并培养科学领导者。该项目由年轻，多元化的教师领导，他们将在未来几年使用SEM进行研究，教学和社区参与。丹尼森有几个项目来支持科学界代表性不足的少数群体。使用最先进的分析仪器的经验对于那些申请研究生院或在大学毕业后进入劳动力市场的学生尤为重要。丹尼森的农村位置将吸引合作者到这个SEM设施从附近的机构，包括当地的学校，学院和地区校园，否则将无法访问这些设施。该奖项授予丹尼森大学，以支持收购场发射扫描电子显微镜（FE-SEM），集成能量色散光谱（EDS）和阴极发光（CL）用于元素分析和表征，沿着样品制备设备。国家的最先进的仪器将大大提高目前的研究和开辟新的调查线教师和学生的研究，研究培训，并在丹尼森的科学部门，包括地球科学，化学和生物化学，生物学系教学。该仪器的功能是定制的，以支持外部和内部资助的科研人员的需求：（1）高分辨率和高放大率的表征和成像的各种材料;（2）定性，半定量和定量分析晶体和其他材料，包括天然和合成，通过EDS和CL;以及（3）可变压力能力，用于低导电性至非导电性以及湿样品的成像和分析的多功能性。具体而言，在地球科学方面，SEM-EDS/ CL将允许量化火山岩和火山灰中的火成岩晶体和玻璃成分的分区，并在同位素分析之前评估土壤和河流沉积物上的颗粒涂层，以进行伽马光谱分析和记录双壳类软体动物化石的成岩蚀变。在化学和生物化学方面，该仪器将支持功能材料开发的多种途径，包括新型激光可写电荷转移液晶，以及纳米结构光电极和催化剂的成像，用于物理表征和通过EDS确定混合金属掺杂剂的元素组成。最后，在生物学方面，该仪器将允许在低真空下或使用临界点干燥器处理的未成熟和成熟花朵的表面结构和解剖结构的检查。该奖项反映了NSF的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。