• Corpus ID: 227127361

Three dimensional vectorial imaging of surface phonons.

@article{Li2020ThreeDV,
  title={Three dimensional vectorial imaging of surface phonons.},
  author={Xiaoyan Li and Georg Haberfehlner and Ulrich Hohenester and Odile St{\'e}phan and Gerald Kothleitner and Mathieu Kociak},
  journal={arXiv: Instrumentation and Detectors},
  year={2020}
}
While phonons and their related properties have been studied comprehensively in bulk materials, a thorough understanding of surface phonons for nanoscale objects remains elusive. Infra-red imaging methods with photons or electrons exist, which can map these vibrational excitations down to the individual atom scale. However, no technique so far was able to directly reveal the complete three-dimensional vectorial picture of the phononic electromagnetic density of states from a nanostructured… 

Figures from this paper

From early to present and future achievements of EELS in the TEM
  • C. Colliex
  • Physics
    The European Physical Journal Applied Physics
  • 2022
This paper reviews the implementation of Electron Energy Loss Spectroscopy (EELS) in a Transmission Electron Microscope (TEM), as an essential tool for advanced analytical studies, exhibiting a

References

SHOWING 1-10 OF 42 REFERENCES
Mapping vibrational surface and bulk modes in a single nanocube
TLDR
By demonstrating the excitation of both bulk and surface vibrational modes using a single probe, this work represents advances in the detection and visualization of spatially confined surface and bulk phonons in nanostructures.
Position and momentum mapping of vibrations in graphene nanostructures
TLDR
A new pathway is provided to determine phonon dispersions down to the scale of an individual free-standing graphene monolayer by mapping the distinct vibrational modes for a large momentum transfer.
Three-dimensional imaging of localized surface plasmon resonances of metal nanoparticles
TLDR
3D images related to LSPRs of an individual silver nanocube can be reconstructed through the application of electron energy-loss spectrum imaging, mapping the excitation across a range of orientations, with a novel combination of non-negative matrix factorization, compressed sensing and electron tomography.
Nanoscale momentum-resolved vibrational spectroscopy
TLDR
A widely applicable method for accessing phonon dispersions of materials at high spatial resolution is demonstrated and should allow for direct correlation of nanoscale vibrational mode dispersions with atomic-scale structure and chemistry.
Vibrational Surface Electron-Energy-Loss Spectroscopy Probes Confined Surface-Phonon Modes
Recently, two reports [Krivanek et al. Nature (London) 514, 209 (2014), Lagos et al. Nature (London) 543, 529 (2017)] have demonstrated the amazing possibility to probe vibrational excitations from
Eigenmode Tomography of Surface Charge Oscillations of Plasmonic Nanoparticles by Electron Energy Loss Spectroscopy
Plasmonic devices designed in three dimensions enable careful tuning of optical responses for control of complex electromagnetic interactions on the nanoscale. Probing the fundamental characteristics
Tailored Nanoscale Plasmon-Enhanced Vibrational Electron Spectroscopy
TLDR
It is experimentally demonstrated that the interaction between a relativistic electron and vibrational modes in nanostructures is fundamentally modified in the presence of plasmons, holding great potential for investigating sensing mechanisms and chemistry in complex nanomaterials down to the molecular level.
Surface phononic graphene.
TLDR
The demonstrated fully integrated artificial phononic graphene platform here constitutes a step towards on-chip quantum simulators of graphene and unique monolithic electro-acoustic integrated circuits.
Tomographic imaging of the photonic environment of plasmonic nanoparticles
TLDR
A tomography scheme based on electron microscopy that allows retrieval of the three-dimensional local density of states of plasmonic nanoparticles with nanometre spatial and sub-eV energy resolution is introduced.
Boron nitride nanoresonators for phonon-enhanced molecular vibrational spectroscopy at the strong coupling limit
TLDR
The interaction between phonon polaritons and molecular vibrations reaches experimentally the onset of the strong coupling regime, while numerical simulations predict that vibrational strong coupling can be fully achieved and could become a viable platform for sensing, local control of chemical reactivity and infrared cavity optics experiments.
...
...