MRI: Development of a Scanning Probe Microscope for Resolving Fast Local Dynamics in Nanostructured Materials

MRI：开发扫描探针显微镜来解决纳米结构材料中的快速局部动力学

• 批准号: 1337173
• 负责人: David Ginger
• 金额: $ 60万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-09-15 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1337173&HistoricalAwards=false
• 关键词: MRI; Development; Scanning; Probe; Microscope

Technical Description: This Major Research Instrumentation award supports development of a scanning probe microscope capable of following dynamic local changes in charge density, ionic motion, polarization, and molecular cooperative phenomena with ~100 nanosecond temporal resolution. The instrument will allow these transient phenomena to be measured following optical, electrical, or thermal excitation while probing the system response with nanometer-scale spatial resolution in a controlled atmosphere and at varying temperatures. The instrument will offer capabilities including: (1) the ability to measure events taking place on ~100 ns timescales by analysis of the dynamic cantilever motion following a transient excitation; (2) the ability to excite the sample with optical pulses synchronized to the cantilever motion and to detect the resulting transient electrical, thermal, and dielectric relaxation processes with high resolution using robust, commercial AFM tips, and; (3) the ability to perform high-bandwidth non-contact frequency-modulation based dielectric measurements, and compare them with contact mode dielectric spectroscopy over a wide frequency range. By permitting these dynamic measurements to be performed at high bandwidth and high spatial resolution, the instrument will allow for future materials advances by directly connecting performance with specific structural features, even in heterogeneous films as are often encountered in real technological materials and applications.*******Non-Technical Description:The investigators at the University of Washington will build, and commission a unique scanning probe microscope capable of following dynamic local changes in electronic, ionic, and molecular properties. The microscope will be able to capture changes happening faster than 100 billionths of a second in features smaller than 20 billionths of a meter (20,000 times smaller than a hair) in size. Once completed, the microscope will be made available as part of an existing shared user facility, providing researchers within and beyond the University of Washington with capabilities to study new materials for applications that advance economically and environmentally important technologies such as new solar photovoltaics for generating low cost energy, Li-ion batteries for consumer electronics and transportation applications, thermoelectric materials for waste heat recovery and thermal management, novel ferroelectrics for use in flexible electronics and sensors, and membranes for industrially and environmentally important separations. The equipment will support the ongoing training and outreach efforts of the Advanced Materials for Energy and Molecular Engineering and Sciences Institutes at the University. The program will support training of student and postdoctoral scholars in the construction and use of next generation of instrumentation, and by encouraging ties with industry will not only provide them with educational enrichment but also support future possibilities for commercialization and widespread adoption of the developed instrumentation.

技术描述：这项主要的研究仪器奖支持能够遵循动态的局部局部变化，电荷密度，离子运动，极化和分子合作现象的开发，并具有〜100 nansecond的时间分辨率。该仪器将允许在光学，电气或热激发后测量这些瞬态现象，同时在受控大气和不同温度下用纳米尺度的空间分辨率探测系统响应。 该仪器将提供功能，包括：（1）通过分析瞬态激发后动态悬臂运动在〜100 NS时标上进行事件的能力； （2）能够用与悬臂运动同步的光脉冲激发样品的能力，并使用强大的商业AFM TIPS和； （3）能够在宽频率范围内执行基于介电测量的高带宽非接触频率调制测量，并将它们与接触模式的介电光谱进行比较。通过允许以高带宽和高空间分辨率进行这些动态测量，该仪器将通过将性能直接与特定的结构特征联系起来，即使在实际技术材料和应用中经常遇到的异质膜中，也可以通过将性能与特定的结构特征联系起来，从而允许未来的材料。离子和分子特性。显微镜将能够捕获更快的变化的速度超过1000亿秒的速度，其大小小于20亿分之一（比头发小的20,000倍）。 Once completed, the microscope will be made available as part of an existing shared user facility, providing researchers within and beyond the University of Washington with capabilities to study new materials for applications that advance economically and environmentally important technologies such as new solar photovoltaics for generating low cost energy, Li-ion batteries for consumer electronics and transportation applications, thermoelectric materials for waste heat recovery and thermal management, novel ferroelectrics for use in flexible电子和传感器，以及用于工业和环境上重要分离的膜。该设备将支持大学高级能源和分子工程和科学研究所的持续培训和推广工作。该计划将支持对下一代仪器建设和使用学生和博士后学者的培训，并通过鼓励与行业的联系，不仅将为他们提供教育丰富的丰富性，而且还支持未来的商业化可能性，并广泛采用了开发的仪器。