Surface-enhanced Raman scattering active gold nanoparticle/nanohole arrays fabricated through electron beam lithography

Tsunghsueh Wu, Yang-Wei Lin

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Effective surface-enhanced Raman scattering (SERS)-active substrates from gold nanoparticle and gold nanohole arrays were successfully fabricated through electron beam lithography with precise computer-aided control of the unit size and intergap distance. Their SERS performance was evaluated using 4-mercaptobenzoic acid (4-MBA). These gold arrays yielded strong SERS signals under 785 nm laser excitation. The enhancement factors for 4-MBA molecules on the prepared gold nanoparticle and nanohole arrays maxed at 1.08 × 10 7 and 8.61 × 10 6 , respectively. The observed increase in SERS enhancement was attributed to the localized surface plasmon resonance (LSPR) wavelength shifting toward the near-infrared regime when the gold nanohole diameter increased, in agreement with the theoretical prediction in this study. The contribution of LSPR to the Raman enhancement from nanohole arrays deposited on fluorine-doped tin oxide glass was elucidated by comparing SERS and transmission spectra. This simple fabrication procedure, which entails employing electron beam lithography and the controllability of the intergap distance, suggests highly promising uses of nanohole arrays as functional components in sensing and photonic devices.

Original languageEnglish
Pages (from-to)1143-1149
Number of pages7
JournalApplied Surface Science
Volume435
DOIs
Publication statusPublished - 2018 Mar 30

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Electron beam lithography
Gold
Raman scattering
Nanoparticles
Surface plasmon resonance
Photonic devices
Laser excitation
Acids
Fluorine
Tin oxides
Controllability
Infrared radiation
Fabrication
Glass
Wavelength
Molecules
Substrates
4-mercaptobenzoate

All Science Journal Classification (ASJC) codes

  • Surfaces, Coatings and Films

Cite this

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title = "Surface-enhanced Raman scattering active gold nanoparticle/nanohole arrays fabricated through electron beam lithography",
abstract = "Effective surface-enhanced Raman scattering (SERS)-active substrates from gold nanoparticle and gold nanohole arrays were successfully fabricated through electron beam lithography with precise computer-aided control of the unit size and intergap distance. Their SERS performance was evaluated using 4-mercaptobenzoic acid (4-MBA). These gold arrays yielded strong SERS signals under 785 nm laser excitation. The enhancement factors for 4-MBA molecules on the prepared gold nanoparticle and nanohole arrays maxed at 1.08 × 10 7 and 8.61 × 10 6 , respectively. The observed increase in SERS enhancement was attributed to the localized surface plasmon resonance (LSPR) wavelength shifting toward the near-infrared regime when the gold nanohole diameter increased, in agreement with the theoretical prediction in this study. The contribution of LSPR to the Raman enhancement from nanohole arrays deposited on fluorine-doped tin oxide glass was elucidated by comparing SERS and transmission spectra. This simple fabrication procedure, which entails employing electron beam lithography and the controllability of the intergap distance, suggests highly promising uses of nanohole arrays as functional components in sensing and photonic devices.",
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Surface-enhanced Raman scattering active gold nanoparticle/nanohole arrays fabricated through electron beam lithography. / Wu, Tsunghsueh; Lin, Yang-Wei.

In: Applied Surface Science, Vol. 435, 30.03.2018, p. 1143-1149.

Research output: Contribution to journalArticle

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