Nano-film aluminum-gold for ultra-high dynamic-range surface plasmon resonance chemical sensor

Briliant Adhi Prabowo*, I. Dewa Putu Hermida, Robeth Viktoria Manurung, Agnes Purwidyantri, Kou Chen Liu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

An analytical and experimental study of nanofilm aluminum (Al) for ultra-high dynamic range surface plasmon resonance (SPR) biosensor is presented in this article. A thin film of 16 nm Al is proposed for metallic sensing layer for SPR sensor. For the protective layer, a 10 nm of gold (Au) layer was configured on top of Al as a protection layer. This ultra-high dynamic range of SPR biosensor reached the bulk refractive index sample limit up to 1.45 RIU. For the analytical study, with the assumption of anisotropic refractive indices experiment, the dynamic range showed a refractive index value of around 1.58 RIU. The refractive index value limit achieved by the proposed sensing design is potentially implemented in various applications, such as in chemical detection and environmental monitoring study with high refractive index solution sample. The experimental results are presented as a proof-of-concept of the proposed idea.

Original languageEnglish
Pages (from-to)286-295
Number of pages10
JournalFrontiers of Optoelectronics
Volume12
Issue number3
Early online date03 Apr 2019
DOIs
Publication statusPublished - 01 Sept 2019
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2019, Higher Education Press and Springer-Verlag GmbH Germany, part of Springer Nature.

Keywords

  • aluminum (Al)
  • dynamic range
  • gold
  • sensor
  • surface plasmon resonance (SPR)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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