#ILLUMINATIONS KNOXVILLE HOW TO#
#ILLUMINATIONS KNOXVILLE FULL#

To enable revolutionary advances in electron scattering and science, the participants of the workshop recommended three major new instrumental developments: A.

#ILLUMINATIONS KNOXVILLE HOW TO#

Central to understanding how to synthesize and exploit functional materials is having the ability to apply external stimuli (such as heat, light, a reactive flux, and an electrical bias) and to observe the resulting dynamic process in situ and in operando, and under the appropriate environment (e.g., not limited to UHV conditions). Ultrafast methods, such as the pump-probe approach, enable pathways toward understanding, and ultimately controlling, the chemical dynamics of molecular systems and the evolution of complexity in mesoscale and nanoscale systems.

#ILLUMINATIONS KNOXVILLE FULL#

Advances in temporal resolution, recording the full phase and energy spaces, and improved spatial resolution constitute a new frontier in electron microscopy, and will directly address the BES Grand Challenges, such as to “control the emergent properties that arise from the complex correlations of atomic and electronic constituents” and the “hidden states” “very far away from equilibrium”. To further advance electron scattering techniques that directly enable groundbreaking science, instrumentation must advance beyond traditional two-dimensional imaging. The DOE BES-funded TEAM (Transmission Electron Aberration-corrected Microscope) project achieved unprecedented sub-atomic spatial resolution in imaging through aberration-corrected transmission electron microscopy. Electron ScatteringImaging, diffraction, and spectroscopy are the fundamental capabilities of electron-scattering instruments. The strong interaction of electrons with matter allows high-energy electron pulses to gather structural information before a sample is damaged. Molecules and soft matter require imaging and spectroscopy with high spatial resolution without damaging their structure.

One of the grand challenges in condensed matter physics is to understand, and ultimately control, emergent phenomena in novel quantum materials that necessitate developing a new generation of instruments that probe the interplay among spin, charge, orbital, and lattice degrees of freedom with intrinsic time- and length-scale resolutions. Understanding and controlling such process at the atomic scale require unprecedented time resolution. Many molecules are able to selectively and efficiently convert sunlight into other forms of energy, like heat and electric current, or store it in altered chemical bonds. Understanding real materials requires new capabilities for three-dimensional atomic scale tomography and spectroscopy of atomic and electronic structures with unprecedented sensitivity, and with simultaneous spatial and energy resolution. The workshop participants identified four key areas where the next generation of such instrumentation would have major impact: A – Multidimensional Visualization more » of Real Materials B – Atomic-scale Molecular Processes C – Photonic Control of Emergence in Quantum Materials D – Evolving Interfaces, Nucleation, and Mass Transport Real materials are comprised of complex three-dimensional arrangements of atoms and defects that directly determine their potential for energy applications. The workshop identified next generation electron scattering and diffraction instruments that are uniquely positioned to address these grand challenges.

Directing and controlling materials at the quantum-, atomic-, and molecular-levels creates enormous challenges and opportunities across a wide spectrum of critical technologies, including those involving the generation and use of energy. The ability to correlate the atomic- and nanoscale-structure of condensed matter with physical properties (e.g., mechanical, electrical, catalytic, and optical) and functionality forms the core of many disciplines. (ORNL), Oak Ridge, TN (United States) Sponsoring Org.: USDOE Office of Science (SC) OSTI Identifier: 1234990 Alternate Identifier(s): OSTI ID: 1247886 Grant/Contract Number: AC05-00OR22725 AC02- 05CH11231 Resource Type: Accepted Manuscript Journal Name: Ultramicroscopy Additional Journal Information: Journal Volume: 151 Journal ID: ISSN 0304-3991 Publisher: Elsevier Country of Publication: United States Language: English Subject: 36 MATERIALS SCIENCE Scanning transmission electron microscopy (STEM) Annular dark-field (ADF) Atomic-depth resolution imaging Surface = , Publication Date: Wed Nov 26 00:00: Research Org.: Oak Ridge National Lab. of Tennessee, Knoxville, TN (United States).

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