The lockbox: phase-locked temporal lenses for time-resolved electron microscopy

密码箱：用于时间分辨电子显微镜的锁相时间透镜

• 批准号: 530379-2018
• 负责人: Siwick, Bradley
• 金额: $ 9.1万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Idea to Innovation
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=665361
• 关键词: lockbox; phase; locked; temporal; lenses

In the coming years, innovation in the science of materials will reside in our ability to understand and control the intimate relationships between the structure of materials and their properties, both at and far from equilibrium. This goal has been recognized as a Grand Challenge for the fundamental sciences in a recent US Department of Energy report. This requires new tools, and the current proposal is focused on a pioneering development in electron microscopy instrumentation that can provide essential missing information on complex materials, and the structure and properties of systems far from equilibrium. Such work is expected to have a broad impact across all traditional scientific disciplines (Physics, Chemistry, Biology).****In particular, the current proposal will support the commercialization of a key enabling technology for electron microscopy at extremely high time resolution. This technology is based on an electron-optical element that can act like a temporal lens, in contrast to the conventional lenses that make up traditional microscope. This optic can be added to any existing electron microscope to improve time-resolution. The orders of magnitude enhancement in performance that this technology provides has defined a new state-of-the-art for such studies. Using this new technology we the Siwick group at McGill has recently provided unprecedented views of atomic-level structural dynamics for several materials and demonstrated the ability to separate dynamical contributions that come from the reorganization of lattice structure from that which comes from changes in orbital the arrangement of electrons. The history of science shows us that the ability to see materials in new ways will lead to new discoveries in materials science and their application to new technologies.

在未来的几年里，材料科学的创新将取决于我们理解和控制材料结构及其性质之间的密切关系的能力，无论是在平衡状态还是远离平衡状态。在美国能源部最近的一份报告中，这一目标被认为是基础科学面临的巨大挑战。这需要新的工具，目前的建议是集中在电子显微镜仪器的开拓性发展，可以提供复杂材料的基本缺失信息，以及远离平衡的系统的结构和性能。预计这项工作将对所有传统科学学科（物理学、化学、生物学）产生广泛影响。特别是，目前的提案将支持极高时间分辨率电子显微镜关键使能技术的商业化。 这项技术是基于一个电子光学元件，可以像一个临时透镜，在对比的传统镜头，使传统的显微镜。 这种光学系统可以添加到任何现有的电子显微镜，以提高时间分辨率。该技术提供的性能的数量级增强已经为此类研究定义了新的最新技术水平。 利用这项新技术，我们麦吉尔大学的Siwick小组最近为几种材料提供了前所未有的原子级结构动力学视图，并证明了将来自晶格结构重组的动力学贡献与来自轨道变化的动力学贡献分开的能力。 科学史告诉我们，以新的方式看待材料的能力将导致材料科学的新发现及其在新技术中的应用。