FDTD analysis on geometrical parameters of bimetallic localized surface plasmon resonance-based sensor and detection of alcohol in water

Fairus Atida Said, P. Susthitha Menon N V Visvanathan, Sahbudin Shaari, Burhanuddin Yeop Majlis

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8 Citations (Scopus)

Abstract

The localized surface plasmon resonance (LSPR) properties are numerically analyzed using finite-difference time domain (FDTD) method, which is a reliable technique in solving Maxwell's equations in dispersive medium. Optical properties and LSPR characteristics were analyzed with Titanium Nitride (TiN) as an adhesion layer at gold(Au)/silver(Ag) interface. The reflection spectra of bimetallic layer nano-holes was compared with various metallic layer thicknesses of Au and Ag, hole radii and lattice period. When compared between single and bimetallic Ag/TiN/Au nano-hole layers, it showed that the layer with 70nmthick Ag/5nm-thick TiN/50nm-thick Au (Ag70/TiN5/Au50) gave greater LSPR-based sensor performance with narrower plasmonic line width and better full width at half maximum (FWHM). Change in geometrical parameters such as lattice period and hole radii was affected the sensitivity and detection accuracy of Ag70/TiN5/Au50 nano-hole layer; which maximum of 90.9% reflection intensity and minimum of 18nm FWHM were obtained. As for application purpose, simulation of Ag70/TiN5/Au50 LSPR based sensor with 80nm nano-hole radii and 400nm periodicity to detect alcohol in water is also demonstrated.

Original languageEnglish
Pages (from-to)6.1-6.5
JournalInternational Journal of Simulation: Systems, Science and Technology
Volume16
Issue number4
DOIs
Publication statusPublished - 1 Aug 2015

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Localized Surface Plasmon Resonance
Time Domain Analysis
Time domain analysis
Finite-difference Time-domain (FDTD)
Surface plasmon resonance
Alcohol
Titanium nitride
Alcohols
Water
Sensor
Nitrides
Titanium
Sensors
Full width at half maximum
Radius
Finite difference time domain method
Maxwell equations
Linewidth
Dispersive Media
Silver

Keywords

  • Alcohol
  • Bimetallic
  • Component
  • Finite-difference time domain
  • Localized surface plasmon resonance
  • Single nano-hole layer
  • TiN adhesion layer

ASJC Scopus subject areas

  • Software
  • Modelling and Simulation

Cite this

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title = "FDTD analysis on geometrical parameters of bimetallic localized surface plasmon resonance-based sensor and detection of alcohol in water",
abstract = "The localized surface plasmon resonance (LSPR) properties are numerically analyzed using finite-difference time domain (FDTD) method, which is a reliable technique in solving Maxwell's equations in dispersive medium. Optical properties and LSPR characteristics were analyzed with Titanium Nitride (TiN) as an adhesion layer at gold(Au)/silver(Ag) interface. The reflection spectra of bimetallic layer nano-holes was compared with various metallic layer thicknesses of Au and Ag, hole radii and lattice period. When compared between single and bimetallic Ag/TiN/Au nano-hole layers, it showed that the layer with 70nmthick Ag/5nm-thick TiN/50nm-thick Au (Ag70/TiN5/Au50) gave greater LSPR-based sensor performance with narrower plasmonic line width and better full width at half maximum (FWHM). Change in geometrical parameters such as lattice period and hole radii was affected the sensitivity and detection accuracy of Ag70/TiN5/Au50 nano-hole layer; which maximum of 90.9{\%} reflection intensity and minimum of 18nm FWHM were obtained. As for application purpose, simulation of Ag70/TiN5/Au50 LSPR based sensor with 80nm nano-hole radii and 400nm periodicity to detect alcohol in water is also demonstrated.",
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author = "Said, {Fairus Atida} and {N V Visvanathan}, {P. Susthitha Menon} and Sahbudin Shaari and {Yeop Majlis}, Burhanuddin",
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AU - Said, Fairus Atida

AU - N V Visvanathan, P. Susthitha Menon

AU - Shaari, Sahbudin

AU - Yeop Majlis, Burhanuddin

PY - 2015/8/1

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N2 - The localized surface plasmon resonance (LSPR) properties are numerically analyzed using finite-difference time domain (FDTD) method, which is a reliable technique in solving Maxwell's equations in dispersive medium. Optical properties and LSPR characteristics were analyzed with Titanium Nitride (TiN) as an adhesion layer at gold(Au)/silver(Ag) interface. The reflection spectra of bimetallic layer nano-holes was compared with various metallic layer thicknesses of Au and Ag, hole radii and lattice period. When compared between single and bimetallic Ag/TiN/Au nano-hole layers, it showed that the layer with 70nmthick Ag/5nm-thick TiN/50nm-thick Au (Ag70/TiN5/Au50) gave greater LSPR-based sensor performance with narrower plasmonic line width and better full width at half maximum (FWHM). Change in geometrical parameters such as lattice period and hole radii was affected the sensitivity and detection accuracy of Ag70/TiN5/Au50 nano-hole layer; which maximum of 90.9% reflection intensity and minimum of 18nm FWHM were obtained. As for application purpose, simulation of Ag70/TiN5/Au50 LSPR based sensor with 80nm nano-hole radii and 400nm periodicity to detect alcohol in water is also demonstrated.

AB - The localized surface plasmon resonance (LSPR) properties are numerically analyzed using finite-difference time domain (FDTD) method, which is a reliable technique in solving Maxwell's equations in dispersive medium. Optical properties and LSPR characteristics were analyzed with Titanium Nitride (TiN) as an adhesion layer at gold(Au)/silver(Ag) interface. The reflection spectra of bimetallic layer nano-holes was compared with various metallic layer thicknesses of Au and Ag, hole radii and lattice period. When compared between single and bimetallic Ag/TiN/Au nano-hole layers, it showed that the layer with 70nmthick Ag/5nm-thick TiN/50nm-thick Au (Ag70/TiN5/Au50) gave greater LSPR-based sensor performance with narrower plasmonic line width and better full width at half maximum (FWHM). Change in geometrical parameters such as lattice period and hole radii was affected the sensitivity and detection accuracy of Ag70/TiN5/Au50 nano-hole layer; which maximum of 90.9% reflection intensity and minimum of 18nm FWHM were obtained. As for application purpose, simulation of Ag70/TiN5/Au50 LSPR based sensor with 80nm nano-hole radii and 400nm periodicity to detect alcohol in water is also demonstrated.

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