Large-scale growth of sharp gold nano-cones for single-molecule SERS detection

Ling Zhang, Hongwen Liu, Luyang Chen, Pengfei Guan, Bin Chen, Takeshi Fujita, Yoshinori Yamaguchi, Hiroshi Iwasaki, Qi Kun Xue, Mingwei Chen

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

We report a novel approach for large-scale gold nano-cone growth by utilizing the open nanopore channels of nanoporous gold films as both the template for nano-cone growth and the delivery channel of the reduction gas through the nano-pipes. Quasi-periodic nano-cone arrays uniformly sprout on the centimeter-sized free-standing nanoporous gold films. The sharp nano-cones give rise to ultrahigh surface enhanced Raman scattering for single molecule detection from the focused electromagnetic fields at the cone apexes. The large-scale nano-cone decorated nanoporous gold films may serve as high-performance SERS substrates for wide-ranging applications in ultrasensitive instrumentation and molecule diagnostics.

Original languageEnglish
Pages (from-to)2882-2887
Number of pages6
JournalRSC Advances
Volume6
Issue number4
DOIs
Publication statusPublished - 2016

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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