Toward a new sensing platform based on conducting polymer: thickness measurement and the effect of different oxidant solution on damage threshold

Soroush Shahnia; Junaiz Rehmen; David Lancaster; Drew G. Evans; Shahraam Afshar

doi:10.1117/12.2539940

30 December 2019 Toward a new sensing platform based on conducting polymer: thickness measurement and the effect of different oxidant solution on damage threshold

Soroush Shahnia, Junaiz Rehmen, David Lancaster, Drew G. Evans, Shahraam Afshar

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Proceedings Volume 11200, AOS Australian Conference on Optical Fibre Technology (ACOFT) and Australian Conference on Optics, Lasers, and Spectroscopy (ACOLS) 2019; 1120030 (2019) https://doi.org/10.1117/12.2539940
Event: ANZCOP, 2019, Melbourne, Australia

Abstract

Conducting polymers are widely researched in terms of both their electrical and optical properties. The optical properties are typically observed on the macroscopic scale. To broaden their application, fabrication and char- acterization of conducting polymers on the nanoscale thickness are required. In this study microscale volume poly(3,4-ethylenedioxytiophene)-tosylate (PEDOT:Tos) layers are fabricated at the tip of a single mode optical fibre without the need for intermediate layers such as Indium Tin Oxide. This allows for optical interrogation (primarily at 1550 nm) of the properties and behaviour of PEDOT:Tos below thicknesses of 500 nm. The optical response (transmission and back-reflection) of the PEDOT:Tos obtained by exposure to different oxidant solu- tion is measured. The effect of different oxidant solution on conductivity, thermal conductivity and degradation time will be examined. This knowledge will lead to implications for the use of conducting polymers in sensing applications where an optical response is detected via a fibre.

Citation Download Citation

Soroush Shahnia, Junaiz Rehmen, David Lancaster, Drew G. Evans, and Shahraam Afshar "Toward a new sensing platform based on conducting polymer: thickness measurement and the effect of different oxidant solution on damage threshold", Proc. SPIE 11200, AOS Australian Conference on Optical Fibre Technology (ACOFT) and Australian Conference on Optics, Lasers, and Spectroscopy (ACOLS) 2019, 1120030 (30 December 2019); https://doi.org/10.1117/12.2539940

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KEYWORDS

Polymers

Laser damage threshold

Reflection

Optical fibers

Continuous wave operation

Absorption

Bioalcohols

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