Modelling of chalcogenide glass based plasmonic structure for chemical sensing using near infrared light

2013

ISRN Optics

A theoretical study based on the use of admittance loci method in the design of surface plasmon resonance (SPR) based structure using Ag-Au bimetallic alloy film of different alloy fractions and nanoparticle sizes has been reported along with some interesting performance related simulated results at 633 nm wavelength. The sensitivity and other performance parameter issues of the structure based on the choice of correct alloy fraction and nanoparticle size of Ag-Au bimetallic alloy film have also been discussed giving due importance to the dynamic range of the designed structure.

Section: Introductionmentioning

confidence: 99%

Admittance Loci Based Design of a Plasmonic Structure Using Ag-Au Bimetallic Alloy Film

2013

ISRN Optics

“…Admittance loci method has also been utilized to design plasmonic structure comprising of chalcogenide and silicon prism materials at infrared wavelength [9,10]. A work on design of a plasmonic structure consisting of Ag-Au bimetallic alloy film using admittance loci method has been reported [11].…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of admittance loci based design of a ceramic prism based plasmonic structure

Proceedings of the 2014 International Conference on Control, Instrumentation, Energy and Communication (CIEC)

2014

A theoretical study based on the use of admittance loci method in design of a plasmonic structure using transparent ceramic prism material and some other types of prism materials has been reported in this paper. A Kretschmann-Raether type prism-based plasmonic structure consisting of a prism, gold (Au) metal film and dielectric sample has been investigated with the use of admittance loci method in Attenuated Total Internal Reflection (ATIR) mode. High refractive index of ceramic material along with high detection accuracy offers certain advantages for sensing applications. Admittance loci plots, surface plasmon sensing curves along with surface plasmon resonance angle, angular shift and detection accuracy plots using transparent ceramic prism material has been compared with those for other types of prism materials in order to study their effects on surface plasmon sensing at 670 nm wavelength.

“…The basic prism-based configurations of SPR device were proposed before for observing SPR. 6 Studies on SPR sensor comprised of high index coupling prism material has been reported. The first application of SPR phenomenon as a sensing tool was observed in gas detection and biosensing.…”

Section: Introductionmentioning

confidence: 99%

Performance of admittance loci based design of plasmonic sensor at infrared wavelength

2013

Opt. Eng

A Kretschmann-Raether prism-based three-layer structure consisting of a prism, gold (Au) metal film, and dielectric sample has been investigated with the use of admittance loci method in attenuated total internal reflection mode. High index prism materials like silicon, chalcogenide (2S2G), and SF14 have been used to study their effect on surface plasmon resonance (SPR) sensing (at 1200-nm wavelength) in infrared region by corresponding admittance loci plots and also by SPR sensing curves. The performance of the sensor based on the choice of the prism material has been discussed with the help of sensitivity plots giving due importance to the dynamic range of the designed sensor. Downloaded From: http://opticalengineering.spiedigitallibrary.org/ on 05/16/2015 Terms of Use: http://spiedl.org/terms Optical Engineering 087112-2 August 2013/Vol. 52(8) Brahmachari and Ray: Performance of admittance loci based design of plasmonic sensor. . . Downloaded From: http://opticalengineering.spiedigitallibrary.org/ on 05/16/2015 Terms of Use: http://spiedl.org/terms Optical Engineering 087112-3 August 2013/Vol. 52(8) Brahmachari and Ray: Performance of admittance loci based design of plasmonic sensor. . . Downloaded From: http://opticalengineering.spiedigitallibrary.org/ on 05/16/2015 Terms of Use: http://spiedl.org/terms Optical Engineering 087112-4 August 2013/Vol. 52(8) Brahmachari and Ray: Performance of admittance loci based design of plasmonic sensor. . . Downloaded From: http://opticalengineering.spiedigitallibrary.org/ on 05/16/2015 Terms of Use: http://spiedl.org/terms Optical Engineering 087112-6 August 2013/Vol. 52(8) Brahmachari and Ray: Performance of admittance loci based design of plasmonic sensor. . . Downloaded From: http://opticalengineering.spiedigitallibrary.org/ on 05/16/2015 Terms of Use: http://spiedl.org/terms Kaushik Brahmachari received his BSc (honors) degree in electronics from