Issue 12, 2016

Visualizing surface plasmons with photons, photoelectrons, and electrons

Abstract

Both photons and electrons may be used to excite surface plasmon polaritons, the collective charge density fluctuations at the surface of metal nanostructures. By virtue of their nanoscopic and dissipative nature, a detailed characterization of surface plasmon (SP) eigenmodes in real space-time ultimately requires joint nanometer spatial and femtosecond temporal resolution. The latter realization has driven significant developments in the past few years, aimed at interrogating both localized and propagating SP modes. In this mini-review, we briefly highlight different techniques employed by our own groups to visualize the enhanced electric fields associated with SPs. Specifically, we discuss recent hyperspectral optical microscopy, tip-enhanced Raman nano-spectroscopy, nonlinear photoemission electron microscopy, as well as correlated scanning transmission electron microscopy-electron energy loss spectroscopy measurements targeting prototypical plasmonic nanostructures and constructs. Through selected practical examples from our own laboratories, we examine the information content in multidimensional images recorded by taking advantage of each of the aforementioned techniques. In effect, we illustrate how SPs can be visualized at the ultimate limits of space and time.

Graphical abstract: Visualizing surface plasmons with photons, photoelectrons, and electrons

Article information

Article type
Minireview
Submitted
06 feb 2016
Accepted
05 apr 2016
First published
06 apr 2016

Analyst, 2016,141, 3562-3572

Visualizing surface plasmons with photons, photoelectrons, and electrons

P. Z. El-Khoury, P. Abellan, Y. Gong, F. S. Hage, J. Cottom, A. G. Joly, R. Brydson, Q. M. Ramasse and W. P. Hess, Analyst, 2016, 141, 3562 DOI: 10.1039/C6AN00308G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements