MRI: Acquisition of an Advanced Nanoindenter for Multiscale Mechanical Characterization of Materials

非技术性：纳米压痕是一种用于材料表征的多功能实验工具，它使用金刚石压头进入材料表面，以评估机械性能，包括硬度、模量、韧性、蠕变、磨损和阻尼。 纳米压痕有能力进行测量的长度尺度范围连续约10纳米和1毫米之间。它也有能力快速，精确地放置数以千计的测量，探测散装试样的内部结构。 由于这些原因，纳米压痕已经成为从医学到工程到生物学、地质学、化学和工程物理学等领域研究的不可或缺的工具。 位于麦迪逊的威斯康星州大学的材料科学中心被指定用于容纳这种纳米压痕仪，供校园内和其他机构的研究人员使用，包括私人和公共机构。拟议研究的直接成果包括具有设计摩擦，粘附和磨损的新型材料;核，机械和电子应用中更坚固和更安全的材料;用于再生和治疗医学领域的生物材料，以及地震断层强度的早期预测。除了服务于研究，这nanoindenter预计将有助于大学的教学使命，提供一个用户友好的测试平台，在本科和研究生教育就业。研究团队还计划组织研讨会和教授纳米压痕的研究生课程，以扩大纳米压痕仪在大学和13个当地行业合作伙伴的各种研究小组中的使用。最后，研究团队致力于传播纳米压痕的教育资源，以促进K-12观众更广泛地参与纳米压痕的基本科学和工程概念。技术：表征的基本强度和变形机制，在大多数今天？的材料系统要求多尺度调查。自动化的高级纳米压痕和划痕实验由于其高空间分辨率和吞吐量而适合于这一具有挑战性的任务。收购和利用先进的自动纳米压痕仪的威斯康星州，麦迪逊的大学是这个项目的范围。具体的研究活动，以加强和启用的自动纳米压头是：微/纳米力学和摩擦学的薄膜，二维材料，涂层和界面;强度和变形机制的复合材料，变形机制和结构的金属玻璃和合金;辐射，激光和等离子体处理的影响材料的微观结构和强度;包括骨、软骨和皮肤在内的生物材料的纳米力学表征，以及地质异质性的力学效应。为了完成这些广泛的研究活动，基于纳米压头的系统配备了动态力学分析模块;用于软/生物材料的扩展行程台和荧光显微镜;用于摩擦学应用的高负载传感器;声发射监测;纳米机电表征;高分辨率机械性能映射;高温台和超低力机械表征。这种紧凑的一体化配置预计将扩大目前21个研究小组，60多名研究生，20名本科生和10名博士后研究人员的研究能力，并开辟材料科学研究的全新途径，包括工业，核，生物医学和地质应用中新型材料的设计。

Non-technical:Nanoindentation is a versatile experimental tool for materials characterization that uses diamond indenters into the surfaces of materials to assess mechanical properties including hardness, modulus, toughness, creep, wear, and damping. Nanoindentation has the ability to make measurements at length scales ranging continuously between about 10 nm and 1 mm. It also has the ability to rapidly and precisely place thousands of measurements for probing internal structure of bulk specimens. For these reasons nanoindentation has become an indispensable tool for research in fields ranging from Medicine to Engineering to Biology, Geology, Chemistry, and Engineering Physics. The Materials Science Center at the University of Wisconsin, Madison is designated to house this nanoindenter for access by researchers across campus and at other institutions, both private and public. Immediate outcomes of the proposed studies include novel materials with the designed friction, adhesion and wear; stronger and safer materials in nuclear, mechanical and electronics applications; biomaterials to be used in regenerative and therapeutic medicine fields, and early prediction of the strength of earthquake faults. Besides serving research, this nanoindenter is expected to aid the teaching mission of the University by providing a user-friendly testing platform to be employed in undergraduate and graduate education. The research team also plans to organize workshops and teach graduate courses on nanoindentation to expand the use of the nanoindenter among various research groups in the university and in 13 local industry partners. Finally, the research team is committed to disseminate educational resources on nanoindentation to facilitate broader participation of K-12 audiences to fundamental scientific and engineering concepts on nanoindentation.Technical:Characterization of fundamental strength and deformation mechanisms in most of today?s demanding materials systems requires multiscale investigation. Automated advanced nanoindentation and scratch experiments are suited for this challenging task due to their high spatial resolution and throughput. Acquisition and utilization of an advanced automated nanoindenter to the University of Wisconsin, Madison is the scope of this project. Specific research activities to be enhanced and enabled by the automated nanoindenter are: micro/nanomechanics and tribology of thin films, 2D materials, coatings and interfaces; strength and deformation mechanisms in composites, and deformation mechanisms and structure of metallic glasses and alloys; influence of radiation, laser, and plasma treatments on materials microstructure and strength; nanomechanical characterization of biomaterials including bone, cartilage and skin, and mechanical effects of geological heterogeneity. To accomplish these broad range of research activities, the nanoindenter based system is equipped with modules for dynamic mechanical analysis; extended travel stage and fluorescence microscope for soft/biomaterials; high load transducer for tribology applications; acoustic emission monitoring; nanoscale electromechanical characterization; high-resolution mechanical property mapping; high temperature stage, and ultra-low force mechanical characterization. This compact and all-in-one configuration is expected to expand present research capabilities of 21 research groups, over 60 graduate, 20 undergraduate students, and 10 postdoctoral researchers and open entirely new avenues of materials science research including the design of novel materials in industrial, nuclear, biomedical and geological applications.