Catechol-functionalized polysiloxane nanocoating for surface enhanced raman scattering on a grating surface

Yida Liu, Ali Demirci, Hiroaki Ohara, Huie Zhu, Shunsuke Yamamoto, Akira Watanabe, Tokuji Miyashita, Keiko Tawa, Junji Nishii, Masaya Mitsuishi

Research output: Contribution to journalArticlepeer-review

Abstract

We demonstrate nanocoating on a corrugated surface with cyclosiloxane-based polymer. We assembled a catechol-functionalized polysiloxane nanofilm (ca. 37 nm) uniformly by dip coating on a one-dimensional grating surface that has a dimension of 500 nm pitch and 30 nm depth. Atomic force microscopy measurements revealed that the surface maintained its original shape even after assembling. Silver nanoparticles were also immobilized uniformly on the surface. The surface showed a remarkable surface enhanced Raman scattering signal, when the light polarization was set parallel to the grating vector (p-polarized light). The result indicates that silver nanoparticle arrays serve as a silver layer that enables incident light to couple with propagating surface plasmon excitation.

Original languageEnglish
Pages (from-to)84-87
Number of pages4
JournalInternational Journal of the Society of Material Engineering for Resources
Volume23
Issue number1
DOIs
Publication statusPublished - 2018 Mar

Keywords

  • Cyclosiloxane
  • Silver nanoparticle
  • Surface plasmon

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Science(all)
  • Mechanical Engineering

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