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

Hachtel, Jordan A.; Lupini, Andrew R.; Idrobo, Juan Carlos

doi:10.1038/s41598-018-23805-5

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:

^[1];

^[1]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Publication Date:: 2018-04-04

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:: 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.

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                    Hachtel, Jordan A., Lupini, Andrew R., & Idrobo, Juan Carlos. Exploring the capabilities of monochromated electron energy loss spectroscopy in the infrared regime.  United States.  https://doi.org/10.1038/s41598-018-23805-5

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                    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.  https://doi.org/10.1038/s41598-018-23805-5.  https://www.osti.gov/servlets/purl/1489598.

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@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         = {2018},

  month        = {4}

}

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https://doi.org/10.1038/s41598-018-23805-5

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Cited by: 6 works

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Figure 1: Electron energy loss spectroscopy and monochromation. (a) Schematic of electron energy-loss spectroscopy (EELS) experiment in a scanning transmission electron microscope (STEM). (b) Schematic of monochromation of electron beam (occurring between the electron gun and the condenser lenses)

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Momentum- and space-resolved high-resolution electron energy loss spectroscopy of individual single-wall carbon nanotubes
journal, May 2017

Hage, F. S.; Hardcastle, T. P.; Scott, A. J.
Physical Review B, Vol. 95, Issue 19
DOI: 10.1103/PhysRevB.95.195411

Electron energy-loss spectroscopy in the TEM
journal, December 2008

Egerton, R. F.
Reports on Progress in Physics, Vol. 72, Issue 1
DOI: 10.1088/0034-4885/72/1/016502

Enhancement of resolution in core-loss and low-loss spectroscopy in a monochromated microscope
journal, October 2006

Lazar, S.; Botton, G. A.; Zandbergen, H. W.
Ultramicroscopy, Vol. 106, Issue 11-12
DOI: 10.1016/j.ultramic.2006.04.024

Das Aufl�sungsverm�gen des elektrostatisch-magnetischen Energieanalysators f�r schnelle Elektronen
journal, August 1964

Boersch, H.; Geiger, J.; Stickel, W.
Zeitschrift f�r Physik, Vol. 180, Issue 4
DOI: 10.1007/BF01380526

Nanoscale probing of bandgap states on oxide particles using electron energy-loss spectroscopy
journal, July 2017

Liu, Qianlang; March, Katia; Crozier, Peter A.
Ultramicroscopy, Vol. 178
DOI: 10.1016/j.ultramic.2016.06.010

Band-gap measurements of direct and indirect semiconductors using monochromated electrons
journal, May 2007

Gu, Lin; Srot, Vesna; Sigle, Wilfried
Physical Review B, Vol. 75, Issue 19
DOI: 10.1103/PhysRevB.75.195214

Construction and characterization of the fringe field monochromator for a field emission gun
journal, April 2000

Mook, H. W.; Kruit, P.
Ultramicroscopy, Vol. 81, Issue 3-4
DOI: 10.1016/S0304-3991(99)00193-X

Background subtraction for low-loss transmission electron energy-loss spectroscopy
journal, October 2002

Reed, B. W.; Sarikaya, M.
Ultramicroscopy, Vol. 93, Issue 1
DOI: 10.1016/S0304-3991(02)00146-8

Valence electron energy-loss spectroscopy in monochromated scanning transmission electron microscopy
journal, October 2005

Erni, Rolf; Browning, Nigel D.
Ultramicroscopy, Vol. 104, Issue 3-4
DOI: 10.1016/j.ultramic.2005.03.009

Materials Characterization in the Aberration-Corrected Scanning Transmission Electron Microscope
journal, August 2005

Varela, M.; Lupini, A. R.; Benthem, K. van
Annual Review of Materials Research, Vol. 35, Issue 1
DOI: 10.1146/annurev.matsci.35.102103.090513

Limits to the spatial, energy and momentum resolution of electron energy-loss spectroscopy
journal, August 2007

Egerton, R. F.
Ultramicroscopy, Vol. 107, Issue 8
DOI: 10.1016/j.ultramic.2006.11.005

Monochromated STEM with a 30 meV-wide, atom-sized electron probe
journal, January 2013

Krivanek, Ondrej L.; Lovejoy, Tracy C.; Dellby, Niklas
Microscopy, Vol. 62, Issue 1
DOI: 10.1093/jmicro/dfs089

Advantages of a monochromator for bandgap measurements using electron energy-loss spectroscopy
journal, February 2005

Kimoto, Koji; Kothleitner, Gerald; Grogger, Werner
Micron, Vol. 36, Issue 2
DOI: 10.1016/j.micron.2004.11.001

Maximum-entropy deconvolution applied to electron energy-loss spectroscopy
journal, August 2000

Overwijk, M. H. F.; Reefman, D.
Micron, Vol. 31, Issue 4
DOI: 10.1016/S0968-4328(99)00111-0

Multipolar Plasmonic Resonances in Silver Nanowire Antennas Imaged with a Subnanometer Electron Probe
journal, April 2011

Rossouw, D.; Couillard, M.; Vickery, J.
Nano Letters, Vol. 11, Issue 4
DOI: 10.1021/nl200634w

Vibrational and valence aloof beam EELS: A potential tool for nondestructive characterization of nanoparticle surfaces
journal, September 2017

Crozier, Peter A.
Ultramicroscopy, Vol. 180
DOI: 10.1016/j.ultramic.2017.03.011

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

Bosman, M.; Watanabe, M.; Alexander, D. T. L.
Ultramicroscopy, Vol. 106, Issue 11-12, p. 1024-1032
DOI: 10.1016/j.ultramic.2006.04.016

Excitation of long-wavelength surface optical vibrational modes in films, cubes and film/cube composite system using an atom-sized electron beam
journal, January 2018

Lagos, Maureen J.; Trügler, Andreas; Amarasinghe, Voshadhi
Microscopy, Vol. 67, Issue suppl_1
DOI: 10.1093/jmicro/dfx130

Measurement of vibrational spectrum of liquid using monochromated scanning transmission electron microscopy–electron energy loss spectroscopy
journal, July 2014

Miyata, Tomohiro; Fukuyama, Mao; Hibara, Akihide
Microscopy, Vol. 63, Issue 5
DOI: 10.1093/jmicro/dfu023

Software techniques for EELS to realize about 0.3 eV energy resolution using 300 kV FEG-TEM
journal, December 2002

Kimoto, K.; Matsui, Y.
Journal of Microscopy, Vol. 208, Issue 3
DOI: 10.1046/j.1365-2818.2002.01083.x

The development of a 200kV monochromated field emission electron source
journal, May 2014

Mukai, Masaki; Kim, Judy S.; Omoto, Kazuya
Ultramicroscopy, Vol. 140
DOI: 10.1016/j.ultramic.2014.02.004

Optical excitations in electron microscopy
journal, February 2010

García de Abajo, F. J.
Reviews of Modern Physics, Vol. 82, Issue 1
DOI: 10.1103/RevModPhys.82.209

Atomic Resolution Imaging at an Ultralow Accelerating Voltage by a Monochromatic Transmission Electron Microscope
journal, October 2016

Morishita, Shigeyuki; Mukai, Masaki; Suenaga, Kazu
Physical Review Letters, Vol. 117, Issue 15
DOI: 10.1103/PhysRevLett.117.153004

A new background subtraction for low-energy EELS core edges
journal, June 1992

Tenailleau, H.; Martin, J. M.
Journal of Microscopy, Vol. 166, Issue 3
DOI: 10.1111/j.1365-2818.1992.tb01529.x

Mapping surface plasmons on a single metallic nanoparticle
journal, April 2007

Nelayah, Jaysen; Kociak, Mathieu; Stéphan, Odile
Nature Physics, Vol. 3, Issue 5
DOI: 10.1038/nphys575

Zero loss peak deconvolution for bandgap EEL spectra
journal, January 2000

Rafferty, B.; Pennycook, S. J.; Brown, L. M.
Journal of Electron Microscopy, Vol. 49, Issue 4
DOI: 10.1093/oxfordjournals.jmicro.a023838

Direct Sub-Angstrom Imaging of a Crystal Lattice
journal, September 2004

Nellist, P. D.
Science, Vol. 305, Issue 5691
DOI: 10.1126/science.1100965

Using a monochromator to improve the resolution in TEM to below 0.5Å. Part II: Application to focal series reconstruction
journal, July 2012

Tiemeijer, P. C.; Bischoff, M.; Freitag, B.
Ultramicroscopy, Vol. 118
DOI: 10.1016/j.ultramic.2012.03.019

Quantifying the low-energy limit and spectral resolution in valence electron energy loss spectroscopy
journal, January 2013

Aguiar, Jeffery A.; Reed, Bryan W.; Ramasse, Quentin M.
Ultramicroscopy, Vol. 124
DOI: 10.1016/j.ultramic.2012.08.010

Direct Observation of Band Structure Modifications in Nanocrystals of CsPbBr ₃ Perovskite
journal, October 2016

Lin, Junhao; Gomez, Leyre; de Weerd, Chris
Nano Letters, Vol. 16, Issue 11
DOI: 10.1021/acs.nanolett.6b03552

Exciton Mapping at Subwavelength Scales in Two-Dimensional Materials
journal, March 2015

Tizei, Luiz H. G.; Lin, Yung-Chang; Mukai, Masaki
Physical Review Letters, Vol. 114, Issue 10
DOI: 10.1103/PhysRevLett.114.107601

Mapping vibrational surface and bulk modes in a single nanocube
journal, March 2017

Lagos, Maureen J.; Trügler, Andreas; Hohenester, Ulrich
Nature, Vol. 543, Issue 7646
DOI: 10.1038/nature21699

Sub-ångstrom resolution using aberration corrected electron optics
journal, August 2002

Batson, P. E.; Dellby, N.; Krivanek, O. L.
Nature, Vol. 418, Issue 6898
DOI: 10.1038/nature00972

Structure and bonding at the atomic scale by scanning transmission electron microscopy
journal, April 2009

Muller, David A.
Nature Materials, Vol. 8, Issue 4
DOI: 10.1038/nmat2380

UV-Vis plasmon studies of metal nanoparticles
journal, April 2010

Eccles, J. W. L.; Bangert, U.; Bromfield, M.
Journal of Physics: Conference Series, Vol. 241
DOI: 10.1088/1742-6596/241/1/012090

Detection of Single Atoms and Buried Defects in Three Dimensions by Aberration-Corrected Electron Microscope with 0.5-Å Information Limit
journal, September 2008

Kisielowski, C.; Freitag, B.; Bischoff, M.
Microscopy and Microanalysis, Vol. 14, Issue 5
DOI: 10.1017/S1431927608080902

Electron-Beam Mapping of Vibrational Modes with Nanometer Spatial Resolution
journal, December 2016

Dwyer, C.; Aoki, T.; Rez, P.
Physical Review Letters, Vol. 117, Issue 25
DOI: 10.1103/PhysRevLett.117.256101

Vibrational spectroscopy in the electron microscope
journal, October 2014

Krivanek, Ondrej L.; Lovejoy, Tracy C.; Dellby, Niklas
Nature, Vol. 514, Issue 7521
DOI: 10.1038/nature13870

Damage-free vibrational spectroscopy of biological materials in the electron microscope
journal, March 2016

Rez, Peter; Aoki, Toshihiro; March, Katia
Nature Communications, Vol. 7, Issue 1
DOI: 10.1038/ncomms10945

Nanoscale Probing of Bandgap States on Oxide Particles Using Electron Energy-Loss Spectroscopy
journal, July 2016

Liu, Qianlang; March, Katia; Crozier, Peter A.
Microscopy and Microanalysis, Vol. 22, Issue S3
DOI: 10.1017/s1431927616005705

Optical excitations in electron microscopy
text, January 2009

de Abajo, F. J. Garcia
arXiv
DOI: 10.48550/arxiv.0903.1669

Works referencing / citing this record:

Emerging Electron Microscopy Techniques for Probing Functional Interfaces in Energy Materials
journal, October 2019

Zachman, Michael J.; Hachtel, Jordan A.; Idrobo, Juan Carlos
Angewandte Chemie, Vol. 132, Issue 4
DOI: 10.1002/ange.201902993

Far-field midinfrared superresolution imaging and spectroscopy of single high aspect ratio gold nanowires
journal, January 2020

Aleshire, Kyle; Pavlovetc, Ilia M.; Collette, Robyn
Proceedings of the National Academy of Sciences, Vol. 117, Issue 5
DOI: 10.1073/pnas.1916433117

Identification of site-specific isotopic labels by vibrational spectroscopy in the electron microscope
journal, January 2019

Hachtel, Jordan A.; Huang, Jingsong; Popovs, Ilja
Science, Vol. 363, Issue 6426
DOI: 10.1126/science.aav5845

Emerging Electron Microscopy Techniques for Probing Functional Interfaces in Energy Materials
journal, January 2020

Zachman, Michael J.; Hachtel, Jordan A.; Idrobo, Juan Carlos
Angewandte Chemie International Edition, Vol. 59, Issue 4
DOI: 10.1002/anie.201902993

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Similar Records

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

Abstract

Citation Formats

Figures / Tables:

Momentum- and space-resolved high-resolution electron energy loss spectroscopy of individual single-wall carbon nanotubes journal, May 2017

Electron energy-loss spectroscopy in the TEM journal, December 2008

Enhancement of resolution in core-loss and low-loss spectroscopy in a monochromated microscope journal, October 2006

Das Aufl�sungsverm�gen des elektrostatisch-magnetischen Energieanalysators f�r schnelle Elektronen journal, August 1964

Nanoscale probing of bandgap states on oxide particles using electron energy-loss spectroscopy journal, July 2017

Band-gap measurements of direct and indirect semiconductors using monochromated electrons journal, May 2007

Construction and characterization of the fringe field monochromator for a field emission gun journal, April 2000

Background subtraction for low-loss transmission electron energy-loss spectroscopy journal, October 2002

Valence electron energy-loss spectroscopy in monochromated scanning transmission electron microscopy journal, October 2005

Materials Characterization in the Aberration-Corrected Scanning Transmission Electron Microscope journal, August 2005

Limits to the spatial, energy and momentum resolution of electron energy-loss spectroscopy journal, August 2007

Monochromated STEM with a 30 meV-wide, atom-sized electron probe journal, January 2013

Advantages of a monochromator for bandgap measurements using electron energy-loss spectroscopy journal, February 2005

Maximum-entropy deconvolution applied to electron energy-loss spectroscopy journal, August 2000

Multipolar Plasmonic Resonances in Silver Nanowire Antennas Imaged with a Subnanometer Electron Probe journal, April 2011

Vibrational and valence aloof beam EELS: A potential tool for nondestructive characterization of nanoparticle surfaces journal, September 2017

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

Excitation of long-wavelength surface optical vibrational modes in films, cubes and film/cube composite system using an atom-sized electron beam journal, January 2018

Measurement of vibrational spectrum of liquid using monochromated scanning transmission electron microscopy–electron energy loss spectroscopy journal, July 2014

Software techniques for EELS to realize about 0.3 eV energy resolution using 300 kV FEG-TEM journal, December 2002

The development of a 200kV monochromated field emission electron source journal, May 2014

Optical excitations in electron microscopy journal, February 2010

Atomic Resolution Imaging at an Ultralow Accelerating Voltage by a Monochromatic Transmission Electron Microscope journal, October 2016

A new background subtraction for low-energy EELS core edges journal, June 1992

Mapping surface plasmons on a single metallic nanoparticle journal, April 2007

Zero loss peak deconvolution for bandgap EEL spectra journal, January 2000

Direct Sub-Angstrom Imaging of a Crystal Lattice journal, September 2004

Using a monochromator to improve the resolution in TEM to below 0.5Å. Part II: Application to focal series reconstruction journal, July 2012

Quantifying the low-energy limit and spectral resolution in valence electron energy loss spectroscopy journal, January 2013

Direct Observation of Band Structure Modifications in Nanocrystals of CsPbBr 3 Perovskite journal, October 2016

Exciton Mapping at Subwavelength Scales in Two-Dimensional Materials journal, March 2015

Mapping vibrational surface and bulk modes in a single nanocube journal, March 2017

Sub-ångstrom resolution using aberration corrected electron optics journal, August 2002

Structure and bonding at the atomic scale by scanning transmission electron microscopy journal, April 2009

UV-Vis plasmon studies of metal nanoparticles journal, April 2010

Detection of Single Atoms and Buried Defects in Three Dimensions by Aberration-Corrected Electron Microscope with 0.5-Å Information Limit journal, September 2008

Electron-Beam Mapping of Vibrational Modes with Nanometer Spatial Resolution journal, December 2016

Vibrational spectroscopy in the electron microscope journal, October 2014

Damage-free vibrational spectroscopy of biological materials in the electron microscope journal, March 2016

Nanoscale Probing of Bandgap States on Oxide Particles Using Electron Energy-Loss Spectroscopy journal, July 2016

Optical excitations in electron microscopy text, January 2009

Emerging Electron Microscopy Techniques for Probing Functional Interfaces in Energy Materials journal, October 2019

Far-field midinfrared superresolution imaging and spectroscopy of single high aspect ratio gold nanowires journal, January 2020

Identification of site-specific isotopic labels by vibrational spectroscopy in the electron microscope journal, January 2019

Emerging Electron Microscopy Techniques for Probing Functional Interfaces in Energy Materials journal, January 2020

Momentum- and space-resolved high-resolution electron energy loss spectroscopy of individual single-wall carbon nanotubes
journal, May 2017

Electron energy-loss spectroscopy in the TEM
journal, December 2008

Enhancement of resolution in core-loss and low-loss spectroscopy in a monochromated microscope
journal, October 2006

Das Aufl�sungsverm�gen des elektrostatisch-magnetischen Energieanalysators f�r schnelle Elektronen
journal, August 1964

Nanoscale probing of bandgap states on oxide particles using electron energy-loss spectroscopy
journal, July 2017

Band-gap measurements of direct and indirect semiconductors using monochromated electrons
journal, May 2007

Construction and characterization of the fringe field monochromator for a field emission gun
journal, April 2000

Background subtraction for low-loss transmission electron energy-loss spectroscopy
journal, October 2002

Valence electron energy-loss spectroscopy in monochromated scanning transmission electron microscopy
journal, October 2005

Materials Characterization in the Aberration-Corrected Scanning Transmission Electron Microscope
journal, August 2005

Limits to the spatial, energy and momentum resolution of electron energy-loss spectroscopy
journal, August 2007

Monochromated STEM with a 30 meV-wide, atom-sized electron probe
journal, January 2013

Advantages of a monochromator for bandgap measurements using electron energy-loss spectroscopy
journal, February 2005

Maximum-entropy deconvolution applied to electron energy-loss spectroscopy
journal, August 2000

Multipolar Plasmonic Resonances in Silver Nanowire Antennas Imaged with a Subnanometer Electron Probe
journal, April 2011

Vibrational and valence aloof beam EELS: A potential tool for nondestructive characterization of nanoparticle surfaces
journal, September 2017

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

Excitation of long-wavelength surface optical vibrational modes in films, cubes and film/cube composite system using an atom-sized electron beam
journal, January 2018

Measurement of vibrational spectrum of liquid using monochromated scanning transmission electron microscopy–electron energy loss spectroscopy
journal, July 2014

Software techniques for EELS to realize about 0.3 eV energy resolution using 300 kV FEG-TEM
journal, December 2002

The development of a 200kV monochromated field emission electron source
journal, May 2014

Optical excitations in electron microscopy
journal, February 2010

Atomic Resolution Imaging at an Ultralow Accelerating Voltage by a Monochromatic Transmission Electron Microscope
journal, October 2016

A new background subtraction for low-energy EELS core edges
journal, June 1992

Mapping surface plasmons on a single metallic nanoparticle
journal, April 2007

Zero loss peak deconvolution for bandgap EEL spectra
journal, January 2000

Direct Sub-Angstrom Imaging of a Crystal Lattice
journal, September 2004

Using a monochromator to improve the resolution in TEM to below 0.5Å. Part II: Application to focal series reconstruction
journal, July 2012

Quantifying the low-energy limit and spectral resolution in valence electron energy loss spectroscopy
journal, January 2013

Direct Observation of Band Structure Modifications in Nanocrystals of CsPbBr ₃ Perovskite
journal, October 2016

Exciton Mapping at Subwavelength Scales in Two-Dimensional Materials
journal, March 2015

Mapping vibrational surface and bulk modes in a single nanocube
journal, March 2017

Sub-ångstrom resolution using aberration corrected electron optics
journal, August 2002

Structure and bonding at the atomic scale by scanning transmission electron microscopy
journal, April 2009

UV-Vis plasmon studies of metal nanoparticles
journal, April 2010

Detection of Single Atoms and Buried Defects in Three Dimensions by Aberration-Corrected Electron Microscope with 0.5-Å Information Limit
journal, September 2008

Electron-Beam Mapping of Vibrational Modes with Nanometer Spatial Resolution
journal, December 2016

Vibrational spectroscopy in the electron microscope
journal, October 2014

Damage-free vibrational spectroscopy of biological materials in the electron microscope
journal, March 2016

Nanoscale Probing of Bandgap States on Oxide Particles Using Electron Energy-Loss Spectroscopy
journal, July 2016

Optical excitations in electron microscopy
text, January 2009

Emerging Electron Microscopy Techniques for Probing Functional Interfaces in Energy Materials
journal, October 2019

Far-field midinfrared superresolution imaging and spectroscopy of single high aspect ratio gold nanowires
journal, January 2020

Identification of site-specific isotopic labels by vibrational spectroscopy in the electron microscope
journal, January 2019

Emerging Electron Microscopy Techniques for Probing Functional Interfaces in Energy Materials
journal, January 2020