Good vibrations

Brydson, Rik

doi:10.1038/514177a

Cited by 5 publications

(3 citation statements)

References 9 publications

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“…This provides an alternative approach for calculating (r,τ n ,τ e ) to that of explicitly obtaining all the functions ψ m (r) and a m (τ n ) in Eq. (4), which is what one must do in the coupled-channels formalism.…”

Section: The Quantum Excitation Of Phonons Modelmentioning

confidence: 98%

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Atomic resolution imaging using electron energy-loss phonon spectroscopy

et al. 2015

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Recent developments have improved the attainable energy resolution in electron energy-loss spectroscopy in aberration-corrected scanning transmission electron microscopy to the order of 10 meV. In principle, this allows spectroscopy and imaging of crystals using the phonon sector of the energy-loss spectrum at atomic resolution, a supposition supported by recent simulations for molecules. Here we show that the "quantum excitation of phonons" model encapsulates the physics necessary to simulate the atomic resolution imaging of crystals based on phonon excitation and we explore the predictions of such simulations.

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Section: The Quantum Excitation Of Phonons Modelmentioning

confidence: 98%

“…Recent experimental work on strontium titanate explored this [3]. Such images may extend characterization techniques by allowing the mapping of light elements such as hydrogen and lithium [4], for which phonon excitations may be more localized and also have a stronger signal than core-loss ionization signals.…”

Section: Introductionmentioning

confidence: 99%

Atomic resolution imaging using electron energy-loss phonon spectroscopy

et al. 2015

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“…A resolution of 60 meV (at 2 eV) in the frequency domain was demonstrated in these measurements, which is equivalent to a temporal resolution of ~2 fs [68]. On a related note, spectral features at energy losses below 100 meV can already be detected using a new generation of monochromators affording a nominal energy resolution of about 10 meV [69][70][71][72][73]. By taking advantage of this threefold increase in resolution, correlated vibrational EELS and infrared spectroscopic measurements are now possible [74].…”

Section: Cross-checking Insights: Direct Measurements Of the Local Elmentioning

confidence: 79%

The information content in single-molecule Raman nanoscopy

El‐Khoury

Abellán²,

Chantry³

et al. 2016

Advances in Physics: X

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It is now possible to establish the chemical identity of a substance at the ultimate detection limit of a single molecule, i.e. the sensitivity required to probe 1.66 yoctomoles (1/NA), using surface-enhanced Raman scattering (SERS). It is also possible to image within an individual molecule, all while retaining chemical selectivity, using tip-enhanced Raman scattering (TERS). The potential applications of ultrasensitive SERS and TERS in chemical and biological detection and imaging are evident, and have attracted significant attention over the past decade. Rather than focusing on conventional single/few-molecule SERS and TERS experiments, where the objective is ultrasensitive spectroscopy and nanoscale chemical imaging, herein we consider greatly informative, yet significantly underrated, signatures of single molecules. Namely, we review recent efforts ultimately aimed at probing different aspects of a molecule's local environment through a detailed analysis of its SERS and TERS spectra and images. Particular attention is devoted to local electric field imaging using TERS; we describe how the vector components and absolute magnitude of the local electric field may be inferred from molecular Raman signatures. We also propose experiments that can potentially be used to cross-check the insights gained from the described SERS and TERS measurements. The ultimate goal of this review is to demonstrate that there is much more to single-molecule Raman scattering than mere ultrasensitive chemical analysis.

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Spatially Confined Analysis

Adams¹,

Barbante²

2015

Chemical Imaging Analysis

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Good vibrations

Cited by 5 publications

References 9 publications

Atomic resolution imaging using electron energy-loss phonon spectroscopy

Atomic resolution imaging using electron energy-loss phonon spectroscopy

The information content in single-molecule Raman nanoscopy

Spatially Confined Analysis

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