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Hybrid nanowire ion-to-electron transducers for integrated bioelectronic circuitry(Conference Presentation)

Damon J. Carrad, Bernard Mostert Orcid Logo, Paul Meredith, Adam P. Micolich

Organic Sensors and Bioelectronics IX, Volume: 9944, Start page: 994408

Swansea University Author: Bernard Mostert Orcid Logo

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DOI (Published version): 10.1117/12.2238701

Abstract

A key task in bioelectronics is the transduction between ionic/protonic signals and electronic signals at high fidelity. This is a considerable challenge since the two carrier types exhibit intrinsically different physics. We present our work on a new class of organic-inorganic transducing interface...

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Published in: Organic Sensors and Bioelectronics IX
ISBN: 9781510602793 9781510602809
ISSN: 0277786X
Published: San Diego, California, United States SPIE 2016
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URI: https://cronfa.swan.ac.uk/Record/cronfa38496
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spelling 2018-03-12T12:50:19.5440905 v2 38496 2018-02-09 Hybrid nanowire ion-to-electron transducers for integrated bioelectronic circuitry(Conference Presentation) a353503c976a7338c7708a32e82f451f 0000-0002-9590-2124 Bernard Mostert Bernard Mostert true false 2018-02-09 SPH A key task in bioelectronics is the transduction between ionic/protonic signals and electronic signals at high fidelity. This is a considerable challenge since the two carrier types exhibit intrinsically different physics. We present our work on a new class of organic-inorganic transducing interface utilising semiconducting InAs and GaAs nanowires directly gated with a proton transporting hygroscopic polymer consisting of undoped polyethylene oxide (PEO) patterned to nanoscale dimensions by a newly developed electron-beam lithography process [1]. Remarkably, we find our undoped PEO polymer electrolyte gate dielectric [2] gives equivalent electrical performance to the more traditionally used LiClO4-doped PEO [3], with an ionic conductivity three orders of magnitude higher than previously reported for undoped PEO [4]. The observed behaviour is consistent with proton conduction in PEO. We attribute our undoped PEO-based devices’ performance to the small external surface and high surface-to-volume ratio of both the nanowire conducting channel and patterned PEO dielectric in our devices, as well as the enhanced hydration afforded by device processing and atmospheric conditions. In addition to studying the basic transducing mechanisms, we also demonstrate high-fidelity ionic to electronic conversion of a.c. signals at frequencies up to 50 Hz. Moreover, by combining complementary n- and p-type transducers we demonstrate functional hybrid ionic-electronic circuits can achieve logic (NOT operation), and with some further engineering of the nanowire contacts, potentially also amplification. Our device structures have significant potential to be scaled towards realising integrated bioelectronic circuitry. [1] D.J. Carrad et al., Nano Letters 14, 94 (2014). [2] D.J. Carrad et al., Manuscript in preparation (2016). [3] S.H. Kim et al., Advanced Materials 25, 1822 (2013). [4] S.K. Fullerton-Shirey et al., Macromolecules 42, 2142 (2009). Conference Paper/Proceeding/Abstract Organic Sensors and Bioelectronics IX 9944 994408 SPIE San Diego, California, United States 9781510602793 9781510602809 0277786X Nanowires, Integrated circuit design, Integrated circuits, Transducers, Dielectrics, Polymers, Indium arsenide 7 11 2016 2016-11-07 10.1117/12.2238701 COLLEGE NANME Physics COLLEGE CODE SPH Swansea University 2018-03-12T12:50:19.5440905 2018-02-09T16:09:31.1434413 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Damon J. Carrad 1 Bernard Mostert 0000-0002-9590-2124 2 Paul Meredith 3 Adam P. Micolich 4
title Hybrid nanowire ion-to-electron transducers for integrated bioelectronic circuitry(Conference Presentation)
spellingShingle Hybrid nanowire ion-to-electron transducers for integrated bioelectronic circuitry(Conference Presentation)
Bernard Mostert
title_short Hybrid nanowire ion-to-electron transducers for integrated bioelectronic circuitry(Conference Presentation)
title_full Hybrid nanowire ion-to-electron transducers for integrated bioelectronic circuitry(Conference Presentation)
title_fullStr Hybrid nanowire ion-to-electron transducers for integrated bioelectronic circuitry(Conference Presentation)
title_full_unstemmed Hybrid nanowire ion-to-electron transducers for integrated bioelectronic circuitry(Conference Presentation)
title_sort Hybrid nanowire ion-to-electron transducers for integrated bioelectronic circuitry(Conference Presentation)
author_id_str_mv a353503c976a7338c7708a32e82f451f
author_id_fullname_str_mv a353503c976a7338c7708a32e82f451f_***_Bernard Mostert
author Bernard Mostert
author2 Damon J. Carrad
Bernard Mostert
Paul Meredith
Adam P. Micolich
format Conference Paper/Proceeding/Abstract
container_title Organic Sensors and Bioelectronics IX
container_volume 9944
container_start_page 994408
publishDate 2016
institution Swansea University
isbn 9781510602793
9781510602809
issn 0277786X
doi_str_mv 10.1117/12.2238701
publisher SPIE
college_str Faculty of Science and Engineering
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hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
document_store_str 0
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description A key task in bioelectronics is the transduction between ionic/protonic signals and electronic signals at high fidelity. This is a considerable challenge since the two carrier types exhibit intrinsically different physics. We present our work on a new class of organic-inorganic transducing interface utilising semiconducting InAs and GaAs nanowires directly gated with a proton transporting hygroscopic polymer consisting of undoped polyethylene oxide (PEO) patterned to nanoscale dimensions by a newly developed electron-beam lithography process [1]. Remarkably, we find our undoped PEO polymer electrolyte gate dielectric [2] gives equivalent electrical performance to the more traditionally used LiClO4-doped PEO [3], with an ionic conductivity three orders of magnitude higher than previously reported for undoped PEO [4]. The observed behaviour is consistent with proton conduction in PEO. We attribute our undoped PEO-based devices’ performance to the small external surface and high surface-to-volume ratio of both the nanowire conducting channel and patterned PEO dielectric in our devices, as well as the enhanced hydration afforded by device processing and atmospheric conditions. In addition to studying the basic transducing mechanisms, we also demonstrate high-fidelity ionic to electronic conversion of a.c. signals at frequencies up to 50 Hz. Moreover, by combining complementary n- and p-type transducers we demonstrate functional hybrid ionic-electronic circuits can achieve logic (NOT operation), and with some further engineering of the nanowire contacts, potentially also amplification. Our device structures have significant potential to be scaled towards realising integrated bioelectronic circuitry. [1] D.J. Carrad et al., Nano Letters 14, 94 (2014). [2] D.J. Carrad et al., Manuscript in preparation (2016). [3] S.H. Kim et al., Advanced Materials 25, 1822 (2013). [4] S.K. Fullerton-Shirey et al., Macromolecules 42, 2142 (2009).
published_date 2016-11-07T03:48:41Z
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score 11.016593

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