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Tunable SERS in Gold Nanorod Dimers through Strain Control on an Elastomeric Substrate
journal contribution
posted on 2010-11-10, 00:00 authored by Kristen D. Alexander, Kwan Skinner, Shunping Zhang, Hong Wei, Rene LopezIn this Letter we provide experimental verification of the interparticle distance dependence of the SERS enhancement factor in 1 μm gold gapped nanorods. Au dimers are fabricated from electrochemically grown heterogeneous Au−Ag−Au nanorods and deposited on a stretchable elastomer film which allows active and reversible tuning of the interparticle gap on the sub-5-nm level. Significantly, this technique allows the distance dependence to be tracked using a single dimer, thereby avoiding enhancement factor reproducibility issues arising from morphological differences in disparate nanoparticle pairs.
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Gold Nanorod Dimersinterparticle gaptechniqueTunable SERSdistance dependenceSERS enhancement factor1 μ m goldnanoparticle pairselectrochemicallydimersinterparticle distance dependencenanorodstretchable elastomer filmsubenhancement factor reproducibility issuesStrain ControlElastomeric SubstrateInverificationdimer
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