Optical sensing of analytes in aqueous solutions with a multiple surface-plasmon-polariton-wave platform

Stephen E. Swiontek; Drew P. Pulsifer; Akhlesh Lakhtakia

doi:10.1038/srep01409

Optical sensing of analytes in aqueous solutions with a multiple surface-plasmon-polariton-wave platform

Stephen E. Swiontek, Drew P. Pulsifer, Akhlesh Lakhtakia

Research output: Contribution to journal › Article › peer-review

63 Scopus citations

Abstract

The commonly used optical sensor based on surface plasmon-polariton wave phenomenon can sense just one chemical, because only one SPP wave can be guided by the interface of a metal and a dielectric material contained in the sensor. Multiple analytes could be detected and/or the sensing reliability for a single analyte could be enhanced, if multiple SPP-wave modes could be excited on a single metal/dielectric interface. For that to happen, the partnering dielectric material must be periodically non-homogeneous. Using a chiral sculptured thin film (CSTF) as that material in a SPP-wave platform, we show that the angular locations of multiple SPP-wave modes shift when the void regions of the CSTF are infiltrated with a fluid. The sensitivities realized in the proof-of-concept experiments are comparable to state-of-research values.

Original language	English (US)
Article number	1409
Journal	Scientific reports
Volume	3
DOIs	https://doi.org/10.1038/srep01409
State	Published - 2013

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title = "Optical sensing of analytes in aqueous solutions with a multiple surface-plasmon-polariton-wave platform",

abstract = "The commonly used optical sensor based on surface plasmon-polariton wave phenomenon can sense just one chemical, because only one SPP wave can be guided by the interface of a metal and a dielectric material contained in the sensor. Multiple analytes could be detected and/or the sensing reliability for a single analyte could be enhanced, if multiple SPP-wave modes could be excited on a single metal/dielectric interface. For that to happen, the partnering dielectric material must be periodically non-homogeneous. Using a chiral sculptured thin film (CSTF) as that material in a SPP-wave platform, we show that the angular locations of multiple SPP-wave modes shift when the void regions of the CSTF are infiltrated with a fluid. The sensitivities realized in the proof-of-concept experiments are comparable to state-of-research values.",

author = "Swiontek, {Stephen E.} and Pulsifer, {Drew P.} and Akhlesh Lakhtakia",

note = "Funding Information: This work was supported in part by the US National Science Foundation under Grant No. CBET-1106503. A.L. and S.E.S. also thank the Charles Godfrey Binder Endowment at the Pennsylvania State University for partial financial support.",

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AU - Swiontek, Stephen E.

AU - Pulsifer, Drew P.

AU - Lakhtakia, Akhlesh

N1 - Funding Information: This work was supported in part by the US National Science Foundation under Grant No. CBET-1106503. A.L. and S.E.S. also thank the Charles Godfrey Binder Endowment at the Pennsylvania State University for partial financial support.

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N2 - The commonly used optical sensor based on surface plasmon-polariton wave phenomenon can sense just one chemical, because only one SPP wave can be guided by the interface of a metal and a dielectric material contained in the sensor. Multiple analytes could be detected and/or the sensing reliability for a single analyte could be enhanced, if multiple SPP-wave modes could be excited on a single metal/dielectric interface. For that to happen, the partnering dielectric material must be periodically non-homogeneous. Using a chiral sculptured thin film (CSTF) as that material in a SPP-wave platform, we show that the angular locations of multiple SPP-wave modes shift when the void regions of the CSTF are infiltrated with a fluid. The sensitivities realized in the proof-of-concept experiments are comparable to state-of-research values.

AB - The commonly used optical sensor based on surface plasmon-polariton wave phenomenon can sense just one chemical, because only one SPP wave can be guided by the interface of a metal and a dielectric material contained in the sensor. Multiple analytes could be detected and/or the sensing reliability for a single analyte could be enhanced, if multiple SPP-wave modes could be excited on a single metal/dielectric interface. For that to happen, the partnering dielectric material must be periodically non-homogeneous. Using a chiral sculptured thin film (CSTF) as that material in a SPP-wave platform, we show that the angular locations of multiple SPP-wave modes shift when the void regions of the CSTF are infiltrated with a fluid. The sensitivities realized in the proof-of-concept experiments are comparable to state-of-research values.

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Optical sensing of analytes in aqueous solutions with a multiple surface-plasmon-polariton-wave platform

Abstract

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