Enabling Probe Based Nanointerrogation: A systems and controls approach

目的：这项提议的目标是建立一种使用原子力显微镜尖端尖端的微悬臂探头实时确定软物质材料性质的范例。该项目的成功完成将产生与现有原子力显微镜兼容的即插即用模块，这将为材料科学研究人员提供一种新的实时工具来成像材料性质，并使其能够进入新的时间调查制度。智能优点：提出的使能概念的主旨是利用现有和流行的软物质地形成像模式，并对该方法进行修改，以产生纳米尺度上的硬度和耗散信息。基于平均理论和实时自适应估计方法的控制和系统领域的工具为实现所提出的目标提供了手段。同样的工具将被用来识别和利用悬臂弯曲的更高模式，并用于激励探测机构的新方法。更广泛的影响：提出的方法是使技术成为可能，并将通过提供材料性质的高带宽确定，为研究基础科学问题打开大门。根据提案Goals，即插即用模块的原型将提供给明尼苏达大学双城分校的CharFac设施，该设施可供不同行业和学术研究人员使用。将纳米讯问材料整合到本科控制课程中，将有助于将令人兴奋的控制方法的新应用纳入课程。向CharFac用户群提供的教学模块将有助于向物理学界传播新的系统观点。将要研究的聚合物系统将对生物应用产生直接影响。

Objective: The goal of this proposal is to establish a paradigm for real-time determination of material properties for soft-matter using micro-cantilever probes with sharp tips using atomic force microscopes. The successful completion of the project will result in plug and play modules compatible with existing atomic force microscopes which will provide material science researchers with a new real-time tool to image material properties and will enable access to new temporal regimes of investigation. Intellectual Merit: The main thrust of the enabling concept proposed is to utilize an existing and prevalent mode of imaging topography of soft-matter, and modifying this method to yield information on stiffness and dissipation at the nano-scale. Tools from controls and systems area based on averaging theory and real-time adaptive estimation methods provide a means to realize proposed objectives. The same tools will be employed to discern and utilize higher modes of the cantilever flexure and for novel means of exciting the probing mechanism. Broader Impacts: The methods proposed are enabling technologies and will open doors for investigating basic science issues by providing high bandwidth determination of material properties. Under proposal goals a prototype of the plug and play module will be made available to the CharFac facility at University of Minnesota, Twin Cities, which is used by diverse set of industry as well as academic researchers. Integration of the nano-interrogation material into the undergraduate control course will aid in incorporation of exciting novel applications of control methods into the curriculum. Instructional modules to be made available to the CharFac user base will enable dissemination of the new systems perspectives to the physics community. The polymer systems to be studied will have direct impact on biological applications.