Hairy gold nanorods: gold nanowire growth on nanosubstrates [invited]

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We report on the synthesis of a new metallic nanoarchitecture, namely, hairy gold nanorods that were carefully designed and engineered the seed-mediated growth of gold nanowires on the sub-nanometer scale gold nanorod substrate. The thickness of the gold nanowires grown could be tuned from 5 to 9 nm by controlling the ratio of HAuCl4 to 4-Mercaptobenzoic acid (MBA) from 2.5 to 25 while the length of gold nanowires could be controlled between 47 nm to 15 μm by varying the concentration of silica coated gold nanorod in the gold solution. The high-aspect-ratio hairy gold nanowires tethered to concentric gold nanorod could be used for fabrication of soft flexible high performance resistive strain sensors and soft surface-enhanced Raman scattering substrate.

Original languageEnglish
Pages (from-to)342-357
Number of pages16
JournalOptical Materials Express
Issue number2
Publication statusPublished - 1 Feb 2020

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