Scanning Probe Microscopy of Polymer, Biopolymer and Semicrystalline Surface Nanostructures

聚合物、生物聚合物和半晶表面纳米结构的扫描探针显微镜

• 批准号: RGPIN-2016-06448
• 负责人: Walker, Gilbert
• 金额: $ 8.85万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=710295
• 关键词: Scanning; Probe; Microscopy; Polymer; Biopolymer

This research program will develop surface sensitive optics and chemistry to understand how light energy flows at the surfaces of materials. Intense light fields offer opportunities to integrate electronics and photonics, to induce chemical reactions, and to detect disease, but there are many challenges ahead. The first challenge to be addressed in the proposed work is how to reliably generate and sustain the intense fields at the desired frequencies and at the correct locations in space. This will require the development of a method to trace energy transduction: to put the energy into a particular mode and watch how the energy moves through the material structure, which will be part of the research team's work. Materials that are promising for creating high speed devices, such as graphene and boron nitride, will be examined. The second challenge is to identify the roles of material defects because they threaten to decrease the performance of devices that could be made from the materials. Better understanding of the defects, or intersections that randomize energy, will lead to design principles for controlled interfaces, where energy transduction can be guided between desired modes. Comparisons between models and experimental data will be made. The work will also test the hypothesis that the strong electric fields associated with surface phonon waves can be used to drive electronic transitions and basic chemical reactions. This development is anticipated as a special consequence of how the energy is injected into the reaction system, by the use of evanescent fields, and could provide a path to more efficient energy production and chemical reaction photocatalysis. The work also includes the development new surface wave methods to develop highly sensitive detectors of proteins at cell surfaces and protein aggregates at model cell interfaces. Deeper understanding of the forces that govern self-assembly within membranes will result. The optical detectors can be integrated into platforms to locate cells that are characteristic of disease. This project will examine how ions bind to surfaces and conduct in tiny conduits, such as boron nitride nanotubes. Practical outcomes of the latter are, for example, ion selective conductors could be used in generating electrical power where freshwater rivers flow into seawater. The principal investigator has a strong history of mentoring highly qualified personnel. In the work at least 8 graduate students and 2 post-doctorals will be trained, along with undergraduates.

该研究计划将开发表面敏感光学和化学，以了解光能如何在材料表面流动。强光场为整合电子学和光子学、诱导化学反应和检测疾病提供了机会，但未来还有许多挑战。 在拟议的工作中要解决的第一个挑战是如何在所需的频率和空间中的正确位置可靠地产生和维持强场。这将需要开发一种追踪能量转换的方法：将能量置于特定模式，并观察能量如何通过材料结构移动，这将是研究团队工作的一部分。 将研究有希望用于制造高速器件的材料，如石墨烯和氮化硼。 第二个挑战是确定材料缺陷的作用，因为它们可能会降低由材料制成的器械的性能。更好地理解随机化能量的缺陷或交叉点，将导致受控接口的设计原则，其中能量转换可以在所需模式之间引导。模型和实验数据之间的比较。 这项工作还将测试与表面声子波相关的强电场可用于驱动电子跃迁和基本化学反应的假设。预计这种发展是通过使用渐逝场将能量注入反应系统的特殊结果，并且可以提供更有效的能量生产和化学反应的途径。 这项工作还包括开发新的表面波方法，以开发细胞表面蛋白质和模型细胞界面蛋白质聚集体的高灵敏度检测器。对控制膜内自组装的力有更深入的了解。光学检测器可以集成到平台中，以定位疾病特征的细胞。 该项目将研究离子如何结合到表面，并在微小的管道中进行，如氮化硼纳米管。后者的实际成果是，例如，离子选择性导体可用于在淡水河流流入海水的地方发电。 主要研究者在指导高素质人员方面有着悠久的历史。在这项工作中，将至少培养8名研究生和2名博士后，沿着还有本科生。