Article ID Journal Published Year Pages File Type
5383812 Chemical Physics Letters 2011 6 Pages PDF
Abstract

Surface-enhanced Raman spectroscopy (SERS) has been shown as one of the most powerful analytical tool with high sensitivity. In this manuscript, we report the chemical design of SERS substrate, based on gold nanoparticles of different shapes-decorated with carbon nanotube with an enhancement factor of 7.5 × 1010. Shape dependent result shows that popcorn shape gold nanoparticle decorated SWCNT is the best choice for SERS substrate due to the existence of 'lightning rod effect' through several sharp edges or corners. Our results provide a good approach to develop highly sensitive SERS substrates and can help to improve the fundamental understanding of SERS phenomena.

Graphical abstractDownload high-res image (60KB)Download full-size imageHighlights► Design of CNT/GNP hybrid based SERS substrates is reported. ► Enhancement factor of up to 7.5 × 1010 observed. ► SERS enhancement using 'lightning rod effect' is shown. ► Results enhance fundamental understanding of SERS phenomena.

Related Topics
Physical Sciences and Engineering Chemistry Physical and Theoretical Chemistry
Authors
, , , , ,