MRI: Development of an In situ Device for Integrated Nano-mechanical Electrical and Thermal Measurements

凯斯西部储备大学将开发一种多功能的最先进的现场测试和表征工具，用于在超高分辨率扫描电子显微镜(SEM)内同时测量纳米结构材料的纳米机械、电和热(NMET)特性。扫描电子显微镜有一个很大的样品室，非常适合进行原位物理性能表征；该室配备了两个Kleindek纳米操纵器和一个微输送气体注射系统，便于运输、定位和组装具有Nanoppresis的纳米结构。该仪器的开发将利用定制的传感器，该传感器将在纳米级结构的原位机械应变期间实现纳米牛顿力和亚纳米位移分辨率的测量。此外，新的探头尖端将与加载/测试设备上的样品夹具集成在一起，这将提供无与伦比的能力，在执行高分辨率成像的同时，对纳米结构、纳米工程复合材料和生物材料进行纳米级的机械、热和/或电测量。改进的纳米结构材料的表征方法有望使人们更好地从根本上理解基本的物理原理，这对纳米技术领域的进一步发展至关重要。该仪器的开发预计将支持研究团队的努力，这些团队的努力涉及多个传统学科。这一独特的诊断工具的推出将开辟与俄亥俄州其他机构的研究人员和我们的合作者之间的新的沟通渠道。该仪器还将为本科生、研究生和博士后提供实验室经验和培训的机会。该仪器将被纳入成像实验和纳米级机械或运输测量项目的实验室课程。

"This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5)."The Case Western Reserve University will develop a versatile state-of-the-art in situ test and characterization tool for simultaneous nano-mechanical electrical and thermal (NMET) property measurements in nanostructured materials inside a ultra-high resolution Scanning Electron Microscope (SEM). The SEM has a large specimen chamber that is ideal for in situ physical property characterization; the chamber is equipped with two Kleindiek nanomanipulators and a micro-delivery gas injection system that facilitate transportation, positioning and assembly of nanoscale structures with nanoprecision. The development of the instrument will utilize a custom built transducer that will enable nanoNewton force and subnanometer displacement resolution measurements during in situ mechanical straining of nanoscale structures. In addition, novel probe tips will be integrated with the specimen grips on the loading/testing apparatus, which will provide unmatched capability to perform simultaneous nanoscale mechanical, thermal and/or electrical measurements in nanostructures, nano-engineered composites and biological materials while performing high resolution imaging. Improved characterization methods for nanostructured materials is expected to lead to a better fundamental understanding of the underlying physics, and is critical to further developments in the field of nanotechnology. The development of the instrumentation is expected to support research teams whose efforts intersect more than one traditional discipline. Availability of this unique diagnostic tool will open new lines of communication with researchers at other Ohio institutions and our collaborators. The instrumentation will also provide an opportunity for laboratory experience and training for undergraduate, graduate and post-doctoral students. The instrumentation will be integrated into the laboratory courses for imaging experiments and for nanoscale mechanical or transport measurement projects.