Molecular ruler based on concurrent measurements of enhanced Raman scattering and fluorescence
Journal
Optics Letters
Journal Volume
35
Journal Issue
22
Pages
3808-3810
Date Issued
2010
Author(s)
Abstract
We report a way to assess the separation between a molecule and a metal surface on account of both Raman scattering and fluorescence intensities measured simultaneously. This approach has no need for an accurate quantity of molecules and bears 1 nm resolution. Its distance sensitivity is experimentally demonstrated in the case of dye molecules lying on a gold surface with a polymer spacer layer in between and is compared with theoretical prediction.
Publisher
Optical Society of America (OSA)
Type
journal article