MRI: Acquisition of a Nanoindenter for Materials Science and Biomaterials Research

MRI：购买纳米压痕仪用于材料科学和生物材料研究

• 批准号: 2214855
• 负责人: Robert Fleming
• 金额: $ 58.62万
• 依托单位: Arkansas State University Main Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2214855&HistoricalAwards=false
• 关键词: MRI; Acquisition; Nanoindenter; Materials; Science

This Major Research Instrumentation (MRI) award supports the acquisition of a nanoindenter for fundamental investigations of advanced engineering materials and biomaterials. The mechanical properties of materials are intricately linked to how they function. Understanding how these properties influence material behavior is critical for both the design of advanced engineered materials and the response of biological tissues to disease. This instrument will enable quantitative mechanical characterization of materials impacting several scientific disciplines and provide foundational understanding of engineering, construction, and biological materials. Additionally, targeted K-12 educational outreach activities will allow students and teachers to participate in hands-on experiments and explore STEM careers. These opportunities will impacting low socioeconomic status communities in the Arkansas Delta. This nanoindenter acquisition will provide a comprehensive nanomechanics platform for quantitatively measuring elastic modulus, hardness, deformation/wear, fatigue strength, and friction of materials. The unique capabilities of the tool will impact the following research projects: 1) Investigating strengthening mechanisms and the role dislocation dynamics in novel high-strength core-shell nanostructures; 2) Assessing the hardness of caries-affected teeth to understand how the pathogen Streptococcus mutans causes tooth decay; 3) in vitro mechanical characterization of cardiovascular tissues at physiological conditions; 4) Understanding the nanomechanistic properties of polymeric asphalt binders with high-resolution spatial mapping of elastic modulus, hardness, and complex shear modulus; 5) Precision nanomanufacturing research to improve the uniformity metallic nanopatterned surfaces produced by thin film dewetting and pulsed electric wave generation; and 6) interfacial strain measurements of III-V semiconductor quantum dot wells grown on sapphire. Together, these projects represent multi-disciplinary research collaborations across engineering and biological sciences. This project is jointly funded by the division of Civil, Mechanical and Manufacturing Innovation (CMMI), the Established Program to Stimulate Competitive Research (EPSCoR), and the Major Instrumentation Research Program (MRI).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.

这项主要的研究工具奖（MRI）奖支持收购纳米Indententer，以对高级工程材料和生物材料进行基本调查。 材料的机械性能与它们的功能无关。了解这些特性如何影响材料行为对于高级工程材料的设计和生物组织对疾病的反应至关重要。 该仪器将实现影响几个科学学科的材料的定量机械表征，并提供对工程，建筑和生物材料的基本理解。 此外，有针对性的K-12教育外展活动将使学生和老师能够参加动手实验并探索STEM职业。这些机会将影响阿肯色三角洲的社会经济地位较低。 这种纳米内输入的获取将提供一个综合的纳米力学平台，用于定量测量弹性模量，硬度，变形/磨损，疲劳强度和材料摩擦。 该工具的独特功能将影响以下研究项目：1）研究强化机制以及新型高强度核心壳纳米结构中的角色脱位动力学； 2）评估受龋齿影响的牙齿的硬度了解病原体链球菌如何引起牙齿腐烂； 3）在生理条件下心血管组织的体外机械表征； 4）了解具有弹性模量，硬度和复杂剪切模量的高分辨率空间映射的聚合物沥青粘合剂的纳米力学特性； 5）精确的纳米制造研究，以改善薄膜侵蚀和脉冲电波产生产生的均匀性金属纳米图案表面； 6）在蓝宝石上生长的III-V半导体量子点的界面应变测量。 这些项目共同代表了跨工程和生物科学的多学科研究合作。该项目由民用，机械和制造创新部（CMMI）共同资助，刺激竞争研究的既定计划（EPSCOR）和主要的仪器研究计划（MRI）（MRI）。本奖奖反映了NSF的法定任务，并通过该基金会的知识分子优点和广泛的影响来评估NSF的法定任务，并被认为是值得的。