Related Experiment Video
Updated: Jun 23, 2026

Electrochemical Etching and Characterization of Sharp Field Emission Points for Electron Impact Ionization
Published on: July 12, 2016
Phenomenological local field enhancement factor distributions around electromagnetic hot spots
1The MacDiarmid Institute for Advanced Materials and Nanotechnology, School of Chemical and Physical Sciences, Victoria University of Wellington, P.O. Box 600, Wellington 6140, New Zealand. eric.leru@vuw.ac.nz
Abstract:
We propose a general phenomenological description of the enhancement factor distribution for surface-enhanced Raman scattering (SERS) and other related phenomena exploiting large local field enhancements at hot spots. This description extends naturally the particular case of a single (fixed) hot spot, and it is expected to be "universal" for many classes of common SERS substrates containing a collection of electromagnetic hot spots with varying geometrical parameters. We further justify it from calculations with generalized Mie theory. The description studied here provides a useful starting point for a qualitative (and semiquantitative) understanding of experimental data and, in particular, the analysis of the statistics of single-molecule SERS events.
Related Concept Videos
Electromagnetic Fields
However, the observation of Gauss's...
Magnetic Fields
A magnetic field is defined by the force that a charged particle experiences...
Induced Electric Fields: Applications
Induced Electric Fields
Dual Nature of Electromagnetic (EM) Radiation
Wavelength is the distance between two consecutive peaks (the highest point) or troughs (the lowest point) in the wave. Frequency is the number of...
Electric Field Lines
The solution to this problem is to use electric field lines, which are not vectors but...
