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.

在接下来的几年中，材料科学的创新将依靠我们理解和控制材料结构及其性质之间的亲密关系的能力，无论是平衡还是远离平衡。在美国最近的一份能源部报告中，这一目标被认为是基础科学的巨大挑战。这需要新的工具，并且当前的提案集中在电子显微镜仪器中的开发开发上，该仪器可以提供有关复杂材料的必不可少的信息，以及远离平衡的系统的结构和特性。预计此类工作将在所有传统科学学科（物理，化学，生物学）中产生广泛的影响。 这项技术基于一种可以像颞镜一样起作用的电子光元素，与构成传统显微镜的传统镜头相比。 可以将此视频添加到任何现有的电子显微镜中，以改善时间分辨率。该技术提供的绩效的数量级增强阶，为此类研究定义了新的最新技术。 使用这项新技术，我们在麦吉尔（McGill）的Siwick Group最近为几种材料提供了原子级结构动力学的前所未有的观点，并证明了能够将晶格结构重组的动力学贡献与轨道变化所带来的分离的动力学贡献。 科学的历史向我们表明，以新方式查看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。