Vibrational spectroscopy in the electron microscope

@article{Krivanek2014VibrationalSI,
  title={Vibrational spectroscopy in the electron microscope},
  author={Ondrej L. Krivanek and Tracy Clark Lovejoy and Niklas Dellby and Toshihiro Aoki and Ray W. Carpenter and Peter Rez and Emmanuel Soignard and Jiangtao Zhu and Philip E. Batson and Maureen J. Lagos and Ray F. Egerton and Peter A. Crozier},
  journal={Nature},
  year={2014},
  volume={514},
  pages={209-212}
}
Vibrational spectroscopies using infrared radiation, Raman scattering, neutrons, low-energy electrons and inelastic electron tunnelling are powerful techniques that can analyse bonding arrangements, identify chemical compounds and probe many other important properties of materials. The spatial resolution of these spectroscopies is typically one micrometre or more, although it can reach a few tens of nanometres or even a few ångströms when enhanced by the presence of a sharp metallic tip. If… 
Theory of Atomic-Scale Vibrational Mapping and Isotope Identification with Electron Beams.
TLDR
This study examines a hexagonal boron nitride molecule as an example of application, in which the presence of a single isotope impurity is revealed through changes in the electron spectra, as well as in the space-, energy-, and momentum-resolved inelastic electron signal.
Single-atom vibrational spectroscopy in the scanning transmission electron microscope
TLDR
Using high-resolution electron energy-loss spectroscopy in the electron microscope, it is shown that a single substitutional silicon impurity in graphene induces a characteristic, localized modification of the vibrational response.
Damage-free vibrational spectroscopy of biological materials in the electron microscope
TLDR
The potential of aloof spectroscopy is demonstrated, which opens up the possibility of non-damaging compositional analyses of organic functional groups, including non-crystalline biological materials, at a spatial resolution of ∼10 nm, simultaneously combined with imaging in the electron microscope.
Vibrational spectroscopy at atomic resolution with electron impact scattering
Atomic vibrations control all thermally activated processes in materials, including diffusion, heat transport, phase transformations and surface chemistry. Recent developments in scanning
Investigating the Spatial Resolution of Vibrational Electron Energy-Loss Spectroscopy
Recent work on monochromated electron energy-loss spectroscopy (EELS) has pushed the energy resolution achievable in a scanning transmission electron microscope (STEM) to around 10 meV [1]. This has
Vibrational Electron Energy Loss Spectroscopy of Astrosilicates
Vibrational spectroscopy in the electron microscope [1] offers the possibility of exploring the infrared (IR) optical properties of materials at the nanometer scale, in direct correlation with
Single-defect phonons imaged by electron microscopy
TLDR
The capabilities of a state-of-the-art transmission electron microscope open the door to the direct mapping of phonon propagation around defects, which is expected to provide useful guidance for engineering the thermal properties of materials.
Surface-Enhanced Molecular Electron Energy Loss Spectroscopy.
TLDR
The interaction of a localized electron beam with molecule-covered polaritonic nanoantennas is theoretically described, and the concept of surface-enhanced molecular EELS exploiting the electromagnetic coupling between the nanoantenna and the molecular sample is proposed.
Detection and Characterization of OH Vibrational Modes using High Energy Resolution EELS
The recent detection of vibrational excitations in monochromated electron energy-loss spectroscopy recorded from scanning transmission electron microscopes has opened up new opportunities for
...
...

References

SHOWING 1-10 OF 46 REFERENCES
Is Localized Infrared Spectroscopy Now Possible in the Electron Microscope?
  • P. Rez
  • Physics
    Microscopy and Microanalysis
  • 2014
TLDR
Improvements in both resolution and controlling the zero-loss tail will be necessary before it is practical to detect optic phonons in solids between 40 and 60 meV.
Optical excitations in electron microscopy
This review discusses how low-energy, valence excitations created by swift electrons can render information on the optical response of structured materials with unmatched spatial resolution. Electron
Atom-by-atom structural and chemical analysis by annular dark-field electron microscopy
TLDR
Annular dark-field imaging in an aberration-corrected scanning transmission electron microscope optimized for low voltage operation can resolve and identify the chemical type of every atom in monolayer hexagonal boron nitride that contains substitutional defects.
Atom-by-atom spectroscopy at graphene edge
TLDR
By demonstrating how rich chemical information can be obtained from single atoms through energy-loss near-edge fine-structure analysis, the results should open the way to exploring the local electronic structures of various nanodevices and individual molecules.
Single-molecule vibrational spectroscopy and microscopy
TLDR
Vibrational spectra for a single molecule adsorbed on a solid surface have been obtained with a scanning tunneling microscope (STM) and should lead to better understanding and control of surface chemistry at the atomic level.
Development of a high energy resolution electron energy‐loss spectroscopy microscope
We have developed a high energy resolution electron energy‐loss spectroscopy (EELS) microscope, which can take spectra from specified small specimen areas and specified small reciprocal space areas
Near-Field Electron Energy Loss Spectroscopy of Nanoparticles
Near-field spectroscopy of nanoparticles was performed with a subnanometer probe size, using ascanning transmission electron microscope. At nonintersecting beam-particle configuration,
Raman Spectroscopy for Chemical Analysis
TLDR
This volume by McCreery gives a very well balanced and authoritative account of Raman microscopy in all its different variants, and the ability to form images is the one that will capture a large share of devotees.
Monochromated STEM with a 30 meV-wide, atom-sized electron probe.
TLDR
Tests of the monochromator indicate that the instrument can perform imaging and EELS with an atom-sized probe <30 meV wide in energy, and that an improvement in energy resolution to 10 meV and beyond should be possible in the future.
...
...