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Updated: May 7, 2026

Single-Digit Nanometer Electron-Beam Lithography with an Aberration-Corrected Scanning Transmission Electron Microscope
Published on: September 14, 2018
Nanometrology
1The Photophysics Research Group, Department of Physics, Centre for Molecular Nanometrology, SUPA, University of Strathclyde, Glasgow, Scotland, UK.
Abstract:
Methods and protocols are described when using fluorescence metrology to determine the average nanoparticle (np) size in colloids in the range of 1-10 nm. The technique is based on determining the rotational correlation time of the np from the decay of fluorescence anisotropy of a dye that is electrostatically or covalently attached to the np as it undergoes Brownian rotation. The np size is then calculated from the Stokes-Einstein equation. The exemplar of silica nps is presented, but the approach can also be applied to other types of nps.
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