A tunable Au core-Ag shell nanoparticle tip for tip-enhanced spectroscopy.
نویسندگان
چکیده
A single Au nanoparticle (NP) with a diameter of 5 nm was transferred to the end of a Si-tip through a picking process, and an Ag shell with a controlled thickness was formed on the Au core. By carrying out tip-enhanced Raman scattering (TERS) measurements on biphenyl-4-thiol (BPT) with the Au@Ag NP-tip (overall diameter of 22-60 nm), we confirm that such tips show a plasmonic local-field enhancement which is sufficient for tip-enhanced spectro-microscopy.
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ورودعنوان ژورنال:
- The Analyst
دوره 141 17 شماره
صفحات -
تاریخ انتشار 2016