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MRI: Acquisition of PeakForce Kelvin Probe Force Microscopy Package and Upgrade for Dimension Icon Scanning Probe Microscopy System

MRI：购买 PeakForce 开尔文探针力显微镜套件并升级 Dimension Icon 扫描探针显微镜系统

基本信息

批准号：
2018889
负责人：
Tonya Coffey
金额：
$ 4.01万
依托单位：
Appalachian State University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2020
资助国家：
美国
起止时间：
2020-09-01 至 2021-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2018889&HistoricalAwards=false
关键词：
MRI Acquisition PeakForce Kelvin Probe

项目摘要

Nontechnical Description:This project funds upgrades to a scanning probe microscope that is central to the research, teaching, and outreach activities at Appalachian State University. This system is critical to four different physics and chemistry research groups on campus and enables continued collaborations with several institutions, including Duke University and the Rochester Institute of Technology. Research performed using the upgraded system will be conducted primarily by undergraduates and Masters students and will focus on the development and characterization of electronic materials such as organic semiconductors and atomically thin crystals. It benefits the public by helping to develop renewable power sources and performant electronic technologies. In addition to research, the instrument is used daily for teaching and is integrated into Appalachian's graduate-level courses on microscopy techniques, materials science, and nanoscience. The microscope is also regularly featured in educational outreach and recruiting events, such as campus open house tours and Appalachian's Science, Technology, Engineering, Arts and Mathematics (STEAM) Expo, a science festival event that gathers approximately 2,500 K-12 students annually. Technical Description:This award allows the addition of two nanoscale imaging modes, Peakforce Kelvin Probe Force Microscopy and Quantitative Nanomechanical Mapping, to the existing Dimension Icon scanning probe microscope at Appalachian. Kelvin Probe microscopy characterizes changes in the work function of a material at the nanoscale, whereas nanomechanical mapping images the spatial variations of the strain and elastic modulus. The team uses these modes to: (1) investigate and optimize the morphology of field-effect and photovoltaic devices based on organic semiconductor blends; (2) characterize local doping in van der Waals heterostructures; (3) image the local strain that arises from Moire effects in twisted van der Waals heterostructures; and (4) characterize the nanoscale morphology of switchable elastomeric materials based on metal-coordination complex crosslinked polymer networks.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.

非技术描述：该项目用于升级扫描探针显微镜，该显微镜是阿巴拉契亚州立大学研究、教学和推广活动的核心。该系统对校园内的四个不同的物理和化学研究小组至关重要，并使其能够与包括杜克大学和罗切斯特理工学院在内的几个机构继续合作。使用升级后的系统进行的研究将主要由本科生和硕士研究生进行，重点是有机半导体和原子薄晶体等电子材料的开发和表征。它通过帮助开发可再生能源和高性能的电子技术使公众受益。除了研究，该仪器还被用于日常教学，并被整合到阿巴拉契亚的显微镜技术、材料科学和纳米科学的研究生课程中。显微镜还经常出现在教育宣传和招生活动中，如校园开放日参观和阿巴拉契亚科学、技术、工程、艺术和数学(STEAM)博览会，这是一个每年聚集约2,500名K-12学生的科学节活动。技术说明：该奖项允许在阿巴拉契亚现有的Dimension Icon扫描探针显微镜上增加两种纳米级成像模式，PeakForce Kelvin探针力显微镜和定量纳米机械测绘。开尔文探针显微镜表征了材料在纳米尺度上功函数的变化，而纳米机械映射则成像了应变和弹性模数的空间变化。该团队使用这些模式来：(1)调查和优化基于有机半导体混合物的场效应和光伏器件的形态；(2)表征范德华异质结构中的局部掺杂；(3)成像扭曲范德华异质结构中由莫尔效应引起的局部应变；以及(4)表征基于金属配位复杂的交联聚合物网络的可切换弹性材料的纳米尺度形态。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。