Discovering Hidden Material Properties of MgCl 2 at Atomic Resolution with Structured Temporal Electron Illumination of Picosecond Time Resolution
Abstract
Abstract A combination of atomic resolution phase contrast electron microscopy and pulsed electron beams reveals pristine properties of MgCl 2 at 1.7 Å resolution that were previously masked by air and beam damage. Both the inter‐ and intra‐layer bonding in pristine MgCl 2 are weak, which leads to uncommonly large local orientation variations that characterize this Ziegler–Natta catalyst support. By delivering electrons with 1–10 ps pulses and ≈160 ps delay times, phonons induced by the electron irradiation in the material are allowed to dissipate before the subsequent delivery of the next electron packet, thus mitigating phonon accumulations. As a result, the total electron dose can be extended by a factor of 80–100 to study genuine material properties at atomic resolution without causing object alterations, which is more effective than reducing the sample temperature. In conditions of minimal damage, beam currents approach femtoamperes with dose rates around 1 eÅ −2 s −1 . Generally, the utilization of pulsed electron beams is introduced herein to access genuine material properties while minimizing beam damage.
- Authors:
-
- The Molecular Foundry Lawrence Berkeley National Laboratory One Cyclotron Rd. Berkeley CA 94720 USA
- Department of MSE University of California Berkeley Berkeley CA 94720 USA
- Thermo Fisher Scientific Achtseweg Noord 5 5651 GG Eindhoven The Netherlands
- Dept. of Applied Physics Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven The Netherlands
- Dept. of Applied Physics Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven The Netherlands, Department of Applied Physics Institute of Complex Molecular Systems Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven The Netherlands
- The Dow Chemical Company Midland MI 48647 USA
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1492461
- Grant/Contract Number:
- DE‐AC02‐05CH11231
- Resource Type:
- Publisher's Accepted Manuscript
- Journal Name:
- Advanced Functional Materials
- Additional Journal Information:
- Journal Name: Advanced Functional Materials Journal Volume: 29 Journal Issue: 11; Journal ID: ISSN 1616-301X
- Publisher:
- Wiley Blackwell (John Wiley & Sons)
- Country of Publication:
- Germany
- Language:
- English
Citation Formats
Kisielowski, Christian, Specht, Petra, Freitag, Bert, Kieft, Erik R., Verhoeven, Wouter, van Rens, Jasper F. M., Mutsaers, Peter, Luiten, Jom, Rozeveld, Steve, Kang, Joo, McKenna, Alyssa J., Nickias, Peter, and Yancey, David F. Discovering Hidden Material Properties of MgCl 2 at Atomic Resolution with Structured Temporal Electron Illumination of Picosecond Time Resolution. Germany: N. p., 2019.
Web. doi:10.1002/adfm.201807818.
Kisielowski, Christian, Specht, Petra, Freitag, Bert, Kieft, Erik R., Verhoeven, Wouter, van Rens, Jasper F. M., Mutsaers, Peter, Luiten, Jom, Rozeveld, Steve, Kang, Joo, McKenna, Alyssa J., Nickias, Peter, & Yancey, David F. Discovering Hidden Material Properties of MgCl 2 at Atomic Resolution with Structured Temporal Electron Illumination of Picosecond Time Resolution. Germany. https://doi.org/10.1002/adfm.201807818
Kisielowski, Christian, Specht, Petra, Freitag, Bert, Kieft, Erik R., Verhoeven, Wouter, van Rens, Jasper F. M., Mutsaers, Peter, Luiten, Jom, Rozeveld, Steve, Kang, Joo, McKenna, Alyssa J., Nickias, Peter, and Yancey, David F. Mon .
"Discovering Hidden Material Properties of MgCl 2 at Atomic Resolution with Structured Temporal Electron Illumination of Picosecond Time Resolution". Germany. https://doi.org/10.1002/adfm.201807818.
@article{osti_1492461,
title = {Discovering Hidden Material Properties of MgCl 2 at Atomic Resolution with Structured Temporal Electron Illumination of Picosecond Time Resolution},
author = {Kisielowski, Christian and Specht, Petra and Freitag, Bert and Kieft, Erik R. and Verhoeven, Wouter and van Rens, Jasper F. M. and Mutsaers, Peter and Luiten, Jom and Rozeveld, Steve and Kang, Joo and McKenna, Alyssa J. and Nickias, Peter and Yancey, David F.},
abstractNote = {Abstract A combination of atomic resolution phase contrast electron microscopy and pulsed electron beams reveals pristine properties of MgCl 2 at 1.7 Å resolution that were previously masked by air and beam damage. Both the inter‐ and intra‐layer bonding in pristine MgCl 2 are weak, which leads to uncommonly large local orientation variations that characterize this Ziegler–Natta catalyst support. By delivering electrons with 1–10 ps pulses and ≈160 ps delay times, phonons induced by the electron irradiation in the material are allowed to dissipate before the subsequent delivery of the next electron packet, thus mitigating phonon accumulations. As a result, the total electron dose can be extended by a factor of 80–100 to study genuine material properties at atomic resolution without causing object alterations, which is more effective than reducing the sample temperature. In conditions of minimal damage, beam currents approach femtoamperes with dose rates around 1 eÅ −2 s −1 . Generally, the utilization of pulsed electron beams is introduced herein to access genuine material properties while minimizing beam damage.},
doi = {10.1002/adfm.201807818},
journal = {Advanced Functional Materials},
number = 11,
volume = 29,
place = {Germany},
year = {Mon Jan 28 00:00:00 EST 2019},
month = {Mon Jan 28 00:00:00 EST 2019}
}
https://doi.org/10.1002/adfm.201807818
Web of Science
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