Optical Dispersions of Bloch Surface Waves and Surface Plasmon Polaritons: Towards Advanced Biosensors

The total internal reflection ellipsometry (TIRE) method was used for the excitation and study of the sensitivity features of surface plasmon polariton (SPP) and Bloch surface waves (BSWs) resonances. For the BSWs generation distributed Bragg gratings were formed on the tops of the substrates (BK7 g...

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Main Authors:	Zigmas Balevicius, Algirdas Baskys
Format:	Article
Language:	English
Published:	MDPI AG 2019-09-01
Series:	Materials
Subjects:	bloch surface waves surface plasmon polariton optical biosensors photonic crystals silicon oxide titanium oxide
Online Access:	https://www.mdpi.com/1996-1944/12/19/3147

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spelling	doaj-5f351340474a469781e24765da868cc62020-11-24T21:55:32ZengMDPI AGMaterials1996-19442019-09-011219314710.3390/ma12193147ma12193147Optical Dispersions of Bloch Surface Waves and Surface Plasmon Polaritons: Towards Advanced BiosensorsZigmas Balevicius0Algirdas Baskys1Faculty of Electronics, Vilnius Gediminas Technical University, Naugarduko st. 41, 03227 Vilnius, LithuaniaFaculty of Electronics, Vilnius Gediminas Technical University, Naugarduko st. 41, 03227 Vilnius, LithuaniaThe total internal reflection ellipsometry (TIRE) method was used for the excitation and study of the sensitivity features of surface plasmon polariton (SPP) and Bloch surface waves (BSWs) resonances. For the BSWs generation distributed Bragg gratings were formed on the tops of the substrates (BK7 glass substrate), which had six bilayers of ~120 nm SiO<sub>2</sub> and ~40 nm TiO<sub>2</sub> and 40 nm of TiO<sub>2</sub> on the top. The SPP sample consisted of the BK7 glass prism and a gold layer (45 nm). Numerical calculations of the optical dispersions and the experimental TIRE data have shown that SPP resonance overtake the BSWs in wavelength scanning by a factor of about 17. However, for the ellipsometric parameters <i>Ψ</i> and <i>Δ</i> in the vicinity of excitations, the BSW sensitivity is comparable with SPP. The obtained resolutions were <inline-formula> <math display="inline"> <semantics> <mrow> <msub> <mi>Δ</mi> <mrow> <mi>S</mi> <mi>P</mi> <mi>P</mi> </mrow> </msub> <mo>=</mo> <mn>7.14</mn> <mo>×</mo> <msup> <mrow> <mn>10</mn> </mrow> <mrow> <mo>−</mo> <mn>6</mn> </mrow> </msup> <mi>R</mi> <mi>I</mi> <mi>U</mi> </mrow> </semantics> </math> </inline-formula>, <inline-formula> <math display="inline"> <semantics> <mrow> <msub> <mi>Ψ</mi> <mrow> <mi>S</mi> <mi>P</mi> <mi>P</mi> </mrow> </msub> <mo>=</mo> <mn>1.7</mn> <mo>×</mo> <msup> <mrow> <mn>10</mn> </mrow> <mrow> <mo>−</mo> <mn>5</mn> </mrow> </msup> <mi>R</mi> <mi>I</mi> <mi>U</mi> </mrow> </semantics> </math> </inline-formula> for the SPP and <inline-formula> <math display="inline"> <semantics> <mrow> <msub> <mi>Δ</mi> <mrow> <mi>B</mi> <mi>S</mi> <mi>W</mi> </mrow> </msub> <mo>=</mo> <mn>8.7</mn> <mo>×</mo> <msup> <mrow> <mn>10</mn> </mrow> <mrow> <mo>−</mo> <mn>6</mn> </mrow> </msup> <mi>R</mi> <mi>I</mi> <mi>U</mi> </mrow> </semantics> </math> </inline-formula>, <inline-formula> <math display="inline"> <semantics> <mrow> <msub> <mi>Ψ</mi> <mrow> <mi>B</mi> <mi>S</mi> <mi>W</mi> </mrow> </msub> <mo>=</mo> <mn>2.7</mn> <mo>×</mo> <msup> <mrow> <mn>10</mn> </mrow> <mrow> <mo>−</mo> <mn>5</mn> </mrow> </msup> <mi>R</mi> <mi>I</mi> <mi>U</mi> </mrow> </semantics> </math> </inline-formula> for the BSW. The capabilities of both surface excitations are discussed from the sensitivity point of view in the design of these advanced biosensors.https://www.mdpi.com/1996-1944/12/19/3147bloch surface wavessurface plasmon polaritonoptical biosensorsphotonic crystalssilicon oxidetitanium oxide
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Zigmas Balevicius Algirdas Baskys
spellingShingle	Zigmas Balevicius Algirdas Baskys Optical Dispersions of Bloch Surface Waves and Surface Plasmon Polaritons: Towards Advanced Biosensors Materials bloch surface waves surface plasmon polariton optical biosensors photonic crystals silicon oxide titanium oxide
author_facet	Zigmas Balevicius Algirdas Baskys
author_sort	Zigmas Balevicius
title	Optical Dispersions of Bloch Surface Waves and Surface Plasmon Polaritons: Towards Advanced Biosensors
title_short	Optical Dispersions of Bloch Surface Waves and Surface Plasmon Polaritons: Towards Advanced Biosensors
title_full	Optical Dispersions of Bloch Surface Waves and Surface Plasmon Polaritons: Towards Advanced Biosensors
title_fullStr	Optical Dispersions of Bloch Surface Waves and Surface Plasmon Polaritons: Towards Advanced Biosensors
title_full_unstemmed	Optical Dispersions of Bloch Surface Waves and Surface Plasmon Polaritons: Towards Advanced Biosensors
title_sort	optical dispersions of bloch surface waves and surface plasmon polaritons: towards advanced biosensors
publisher	MDPI AG
series	Materials
issn	1996-1944
publishDate	2019-09-01
description	The total internal reflection ellipsometry (TIRE) method was used for the excitation and study of the sensitivity features of surface plasmon polariton (SPP) and Bloch surface waves (BSWs) resonances. For the BSWs generation distributed Bragg gratings were formed on the tops of the substrates (BK7 glass substrate), which had six bilayers of ~120 nm SiO<sub>2</sub> and ~40 nm TiO<sub>2</sub> and 40 nm of TiO<sub>2</sub> on the top. The SPP sample consisted of the BK7 glass prism and a gold layer (45 nm). Numerical calculations of the optical dispersions and the experimental TIRE data have shown that SPP resonance overtake the BSWs in wavelength scanning by a factor of about 17. However, for the ellipsometric parameters <i>Ψ</i> and <i>Δ</i> in the vicinity of excitations, the BSW sensitivity is comparable with SPP. The obtained resolutions were <inline-formula> <math display="inline"> <semantics> <mrow> <msub> <mi>Δ</mi> <mrow> <mi>S</mi> <mi>P</mi> <mi>P</mi> </mrow> </msub> <mo>=</mo> <mn>7.14</mn> <mo>×</mo> <msup> <mrow> <mn>10</mn> </mrow> <mrow> <mo>−</mo> <mn>6</mn> </mrow> </msup> <mi>R</mi> <mi>I</mi> <mi>U</mi> </mrow> </semantics> </math> </inline-formula>, <inline-formula> <math display="inline"> <semantics> <mrow> <msub> <mi>Ψ</mi> <mrow> <mi>S</mi> <mi>P</mi> <mi>P</mi> </mrow> </msub> <mo>=</mo> <mn>1.7</mn> <mo>×</mo> <msup> <mrow> <mn>10</mn> </mrow> <mrow> <mo>−</mo> <mn>5</mn> </mrow> </msup> <mi>R</mi> <mi>I</mi> <mi>U</mi> </mrow> </semantics> </math> </inline-formula> for the SPP and <inline-formula> <math display="inline"> <semantics> <mrow> <msub> <mi>Δ</mi> <mrow> <mi>B</mi> <mi>S</mi> <mi>W</mi> </mrow> </msub> <mo>=</mo> <mn>8.7</mn> <mo>×</mo> <msup> <mrow> <mn>10</mn> </mrow> <mrow> <mo>−</mo> <mn>6</mn> </mrow> </msup> <mi>R</mi> <mi>I</mi> <mi>U</mi> </mrow> </semantics> </math> </inline-formula>, <inline-formula> <math display="inline"> <semantics> <mrow> <msub> <mi>Ψ</mi> <mrow> <mi>B</mi> <mi>S</mi> <mi>W</mi> </mrow> </msub> <mo>=</mo> <mn>2.7</mn> <mo>×</mo> <msup> <mrow> <mn>10</mn> </mrow> <mrow> <mo>−</mo> <mn>5</mn> </mrow> </msup> <mi>R</mi> <mi>I</mi> <mi>U</mi> </mrow> </semantics> </math> </inline-formula> for the BSW. The capabilities of both surface excitations are discussed from the sensitivity point of view in the design of these advanced biosensors.
topic	bloch surface waves surface plasmon polariton optical biosensors photonic crystals silicon oxide titanium oxide
url	https://www.mdpi.com/1996-1944/12/19/3147
work_keys_str_mv	AT zigmasbalevicius opticaldispersionsofblochsurfacewavesandsurfaceplasmonpolaritonstowardsadvancedbiosensors AT algirdasbaskys opticaldispersionsofblochsurfacewavesandsurfaceplasmonpolaritonstowardsadvancedbiosensors
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Optical Dispersions of Bloch Surface Waves and Surface Plasmon Polaritons: Towards Advanced Biosensors

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