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84 results

Page 1 of 5

  • A Roadmap for Edge Computing Enabled Automated Multidimensional Transmission Electron Microscopy

  • Debangshu Mukherjee, Kevin M. Roccapriore, Anees Al-Najjar, Ayana Ghosh, Jacob D. Hinkle, Andrew R. Lupini, Rama K. Vasudevan, Sergei V. Kalinin, Olga S. Ovchinnikova, Maxim A. Ziatdinov, Nageswara S. Rao
  • Journal:
    / Volume 30 / Issue 6 / November 2022
    Published online by Cambridge University Press:
    24 November 2022, pp. 10-19
    Print publication:
    November 2022
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  • The advent of modern, high-speed electron detectors has made the collection of multidimensional hyperspectral transmission electron microscopy datasets, such as 4D-STEM, a routine. However, many microscopists find such experiments daunting since analysis, collection, long-term storage, and networking of such datasets remain challenging. Some common issues are their large and unwieldy size that often are several gigabytes, non-standardized data analysis routines, and a lack of clarity about the computing and network resources needed to utilize the electron microscope. The existing computing and networking bottlenecks introduce significant penalties in each step of these experiments, and thus, real-time analysis-driven automated experimentation for multidimensional TEM is challenging. One solution is to integrate microscopy with edge computing, where moderately powerful computational hardware performs the preliminary analysis before handing off the heavier computation to high-performance computing (HPC) systems. Here we trace the roots of computation in modern electron microscopy, demonstrate deep learning experiments running on an edge system, and discuss the networking requirements for tying together microscopes, edge computers, and HPC systems.

  • Spectral Classification of Structurally Organized Adatom Configurations

  • Kevin Roccapriore, Zheng Gai, Bobby Sumpter, Mina Yoon, Sergei V. Kalinin
  • Journal:
    / Volume 26 / Issue S2 / August 2020
    Published online by Cambridge University Press:
    30 July 2020, pp. 2988-2989
    Print publication:
    August 2020
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  • The ORNL Lectures on Scanning Probe Microscopy, Part 2: The Force Dimension: Electronic and Ionic Transport Measurements via Kelvin Probe Force Microscopy

  • Sergei V. Kalinin
  • Journal:
    / Volume 27 / Issue 6 / November 2019
    Published online by Cambridge University Press:
    29 October 2019, pp. 18-23
    Print publication:
    November 2019
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  • Electronic and ionic transport underpins functionality of broad range of electronic and energy devices, and is an active field of applied and fundamental research. The lecture series on Kelvin probe force microscopy and scanning probe microscopy (SPM) based current-voltage (I-V) transport measurements introduces the basic principles of SPM techniques for transport measurements based on potential and current detection, describes the multitude of dynamics variants of KPFM, KPFM-based transport measurements, and its implementation in ambient, vacuum, and liquid environments and associated artifacts. Multidimensional current- and capacitance-based transport measurements are described. The lectures are available at YouTube: https://www.youtube.com/playlist?list=PLS6ZvEWHZ3OOkRFPTrnsV3Ej09UGUjor3.

  • The ORNL Lectures on Scanning Probe Microscopy, Part 1: Piezoresponse Force Microscopy and Spectroscopy of Ferroelectrics, Energy Materials, and Biological Systems

  • Sergei V. Kalinin
  • Journal:
    / Volume 27 / Issue 6 / November 2019
    Published online by Cambridge University Press:
    29 October 2019, pp. 12-16
    Print publication:
    November 2019
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  • Scanning probe microscopies (SPM) have opened the window into characterization of nanoscale functionalities of a broad panoply of materials and devices. This lecture series summarizes the principles, theoretical basis, techniques, and applications of piezoresponse force microscopy and electrochemical strain microscopies, the SPM techniques based on the electromechanical detection. The image formation mechanisms, spectroscopic and excitation modes, imaging in ambient, liquid, and vacuum environments and associated artifacts are discussed, as are application to broad ranges of materials systems from ferroelectrics to energy and information technology materials to biological systems. The lectures are available at YouTube: https://www.youtube.com/playlist?list=PLS6ZvEWHZ3OPifI9LVKnHX7tK38iTltOD.

  • A self-driving microscope and the Atomic Forge

  • Ondrej Dyck, Stephen Jesse, Sergei V. Kalinin
  • Journal:
    MRS Bulletin / Volume 44 / Issue 9 / September 2019
    Published online by Cambridge University Press:
    05 September 2019, pp. 669-670
    Print publication:
    September 2019
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  • Towards Atomic Scale Quantum Structure Fabrication in 2D Materials

  • Ondrej Dyck, Andrew Lupini, Maxim Ziatdinov, Xin Li, Sergei V. Kalinin, Stephen Jesse
  • Journal:
    / Volume 25 / Issue S2 / August 2019
    Published online by Cambridge University Press:
    05 August 2019, pp. 940-941
    Print publication:
    August 2019
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Page 1 of 5