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Title: Exploring the capabilities of monochromated electron energy loss spectroscopy in the infrared regime

Abstract

Here, monochromated electron energy loss spectroscopy (EELS) is one of the leading techniques to study materials properties that correspond to low (<5 eV) energy losses (i.e. band-gaps, plasmons, and excitons) with nanoscale spatial resolution. Recently a new generation of monochromators have become available, opening regimes and unlocking excitations that were previously unobservable in the electron microscope. The capabilities of these new instruments are still being explored, and here we study the effect of monochromation on various aspects of EELS analysis in the infrared (<1 eV) regime. We investigate the effect of varying levels of monochromation on energy resolution, zero-loss peak (ZLP) tail reduction, ZLP tail shape, signal-to-noise-ratio, and spatial resolution. From these experiments, the new capabilities of monochromated EELS are shown to be highly promising for the future of localized spectroscopic analysis.

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1489598
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 8; Journal Issue: 1; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Hachtel, Jordan A., Lupini, Andrew R., and Idrobo, Juan Carlos. Exploring the capabilities of monochromated electron energy loss spectroscopy in the infrared regime. United States: N. p., 2018. Web. doi:10.1038/s41598-018-23805-5.
Hachtel, Jordan A., Lupini, Andrew R., & Idrobo, Juan Carlos. Exploring the capabilities of monochromated electron energy loss spectroscopy in the infrared regime. United States. doi:10.1038/s41598-018-23805-5.
Hachtel, Jordan A., Lupini, Andrew R., and Idrobo, Juan Carlos. Wed . "Exploring the capabilities of monochromated electron energy loss spectroscopy in the infrared regime". United States. doi:10.1038/s41598-018-23805-5. https://www.osti.gov/servlets/purl/1489598.
@article{osti_1489598,
title = {Exploring the capabilities of monochromated electron energy loss spectroscopy in the infrared regime},
author = {Hachtel, Jordan A. and Lupini, Andrew R. and Idrobo, Juan Carlos},
abstractNote = {Here, monochromated electron energy loss spectroscopy (EELS) is one of the leading techniques to study materials properties that correspond to low (<5 eV) energy losses (i.e. band-gaps, plasmons, and excitons) with nanoscale spatial resolution. Recently a new generation of monochromators have become available, opening regimes and unlocking excitations that were previously unobservable in the electron microscope. The capabilities of these new instruments are still being explored, and here we study the effect of monochromation on various aspects of EELS analysis in the infrared (<1 eV) regime. We investigate the effect of varying levels of monochromation on energy resolution, zero-loss peak (ZLP) tail reduction, ZLP tail shape, signal-to-noise-ratio, and spatial resolution. From these experiments, the new capabilities of monochromated EELS are shown to be highly promising for the future of localized spectroscopic analysis.},
doi = {10.1038/s41598-018-23805-5},
journal = {Scientific Reports},
number = 1,
volume = 8,
place = {United States},
year = {Wed Apr 04 00:00:00 EDT 2018},
month = {Wed Apr 04 00:00:00 EDT 2018}
}

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Works referenced in this record:

Mapping chemical and bonding information using multivariate analysis of electron energy-loss spectrum images
journal, October 2006