Ultrasensitive Multi-Functional Flexible Sensors Based on Organic Field-Effect Transistors with Polymer-Dispersed Liquid Crystal Sensing Layers

Abstract Ultrasensitive flexible sensors with multi-sensing functions are required for various applications in flexible electronics era. Here we demonstrate flexible polymer-dispersed liquid crystal (PDLC)-integrated-organic field-effect transistors (OFETs) (PDLC-i-OFETs), which sensitively respond...

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Autores principales:	Myeonghun Song, Jooyeok Seo, Hwajeong Kim, Youngkyoo Kim
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2edad46111c742c6a55b565fa9a619df
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spelling	oai:doaj.org-article:2edad46111c742c6a55b565fa9a619df2021-12-02T16:06:17ZUltrasensitive Multi-Functional Flexible Sensors Based on Organic Field-Effect Transistors with Polymer-Dispersed Liquid Crystal Sensing Layers10.1038/s41598-017-02160-x2045-2322https://doaj.org/article/2edad46111c742c6a55b565fa9a619df2017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-02160-xhttps://doaj.org/toc/2045-2322Abstract Ultrasensitive flexible sensors with multi-sensing functions are required for various applications in flexible electronics era. Here we demonstrate flexible polymer-dispersed liquid crystal (PDLC)-integrated-organic field-effect transistors (OFETs) (PDLC-i-OFETs), which sensitively respond to various stimulations including weak gas (air) flow, direct physical touch, light, and heat. The flexible PDLC-i-OFETs were fabricated by spin-coating the poly(methyl methacrylate) (PMMA)-dispersed 4,4’-pentyl-cyanobiphenyl (5CB) layers on the poly(3-hexylthiophene) (P3HT) channel layers of OFETs with 200 μm-thick poly(ethylene naphthalate) (PEN) substrates. The flexible PDLC-i-OFET devices could sense very weak nitrogen gas flow (0.3 sccm), which cannot be felt by human skins, and stably responded to direct physical touches (0.6~4.8 g load). In addition, the present devices showed very sensitive photoresponses to a visible light and exhibited excellent heat-sensing characteristics at a temperature of 25~70 °C. In particular, the present flexible PDLC-i-OFET devices could sense two different stimulations at the same time, indicative of promising multi-sensing capabilities.Myeonghun SongJooyeok SeoHwajeong KimYoungkyoo KimNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Myeonghun Song Jooyeok Seo Hwajeong Kim Youngkyoo Kim Ultrasensitive Multi-Functional Flexible Sensors Based on Organic Field-Effect Transistors with Polymer-Dispersed Liquid Crystal Sensing Layers
description	Abstract Ultrasensitive flexible sensors with multi-sensing functions are required for various applications in flexible electronics era. Here we demonstrate flexible polymer-dispersed liquid crystal (PDLC)-integrated-organic field-effect transistors (OFETs) (PDLC-i-OFETs), which sensitively respond to various stimulations including weak gas (air) flow, direct physical touch, light, and heat. The flexible PDLC-i-OFETs were fabricated by spin-coating the poly(methyl methacrylate) (PMMA)-dispersed 4,4’-pentyl-cyanobiphenyl (5CB) layers on the poly(3-hexylthiophene) (P3HT) channel layers of OFETs with 200 μm-thick poly(ethylene naphthalate) (PEN) substrates. The flexible PDLC-i-OFET devices could sense very weak nitrogen gas flow (0.3 sccm), which cannot be felt by human skins, and stably responded to direct physical touches (0.6~4.8 g load). In addition, the present devices showed very sensitive photoresponses to a visible light and exhibited excellent heat-sensing characteristics at a temperature of 25~70 °C. In particular, the present flexible PDLC-i-OFET devices could sense two different stimulations at the same time, indicative of promising multi-sensing capabilities.
format	article
author	Myeonghun Song Jooyeok Seo Hwajeong Kim Youngkyoo Kim
author_facet	Myeonghun Song Jooyeok Seo Hwajeong Kim Youngkyoo Kim
author_sort	Myeonghun Song
title	Ultrasensitive Multi-Functional Flexible Sensors Based on Organic Field-Effect Transistors with Polymer-Dispersed Liquid Crystal Sensing Layers
title_short	Ultrasensitive Multi-Functional Flexible Sensors Based on Organic Field-Effect Transistors with Polymer-Dispersed Liquid Crystal Sensing Layers
title_full	Ultrasensitive Multi-Functional Flexible Sensors Based on Organic Field-Effect Transistors with Polymer-Dispersed Liquid Crystal Sensing Layers
title_fullStr	Ultrasensitive Multi-Functional Flexible Sensors Based on Organic Field-Effect Transistors with Polymer-Dispersed Liquid Crystal Sensing Layers
title_full_unstemmed	Ultrasensitive Multi-Functional Flexible Sensors Based on Organic Field-Effect Transistors with Polymer-Dispersed Liquid Crystal Sensing Layers
title_sort	ultrasensitive multi-functional flexible sensors based on organic field-effect transistors with polymer-dispersed liquid crystal sensing layers
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/2edad46111c742c6a55b565fa9a619df
work_keys_str_mv	AT myeonghunsong ultrasensitivemultifunctionalflexiblesensorsbasedonorganicfieldeffecttransistorswithpolymerdispersedliquidcrystalsensinglayers AT jooyeokseo ultrasensitivemultifunctionalflexiblesensorsbasedonorganicfieldeffecttransistorswithpolymerdispersedliquidcrystalsensinglayers AT hwajeongkim ultrasensitivemultifunctionalflexiblesensorsbasedonorganicfieldeffecttransistorswithpolymerdispersedliquidcrystalsensinglayers AT youngkyookim ultrasensitivemultifunctionalflexiblesensorsbasedonorganicfieldeffecttransistorswithpolymerdispersedliquidcrystalsensinglayers
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Ultrasensitive Multi-Functional Flexible Sensors Based on Organic Field-Effect Transistors with Polymer-Dispersed Liquid Crystal Sensing Layers

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