Three-dimensional platinum nanoparticle-based bridges for ammonia gas sensing

Abstract This study demonstrates the fabrication of self-aligning three-dimensional (3D) platinum bridges for ammonia gas sensing using gas-phase electrodeposition. This deposition scheme can guide charged nanoparticles to predetermined locations on a surface with sub-micrometer resolution. A shutte...

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Autores principales:	Nishchay A. Isaac, Johannes Reiprich, Leslie Schlag, Pedro H. O. Moreira, Mostafa Baloochi, Vishal A. Raheja, Anna-Lena Hess, Luis F. Centeno, Gernot Ecke, Jörg Pezoldt, Heiko O. Jacobs
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/1f040e2c67b343858a754484d0fe17cd
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spelling	oai:doaj.org-article:1f040e2c67b343858a754484d0fe17cd2021-12-02T16:04:18ZThree-dimensional platinum nanoparticle-based bridges for ammonia gas sensing10.1038/s41598-021-91975-w2045-2322https://doaj.org/article/1f040e2c67b343858a754484d0fe17cd2021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-91975-whttps://doaj.org/toc/2045-2322Abstract This study demonstrates the fabrication of self-aligning three-dimensional (3D) platinum bridges for ammonia gas sensing using gas-phase electrodeposition. This deposition scheme can guide charged nanoparticles to predetermined locations on a surface with sub-micrometer resolution. A shutter-free deposition is possible, preventing the use of additional steps for lift-off and improving material yield. This method uses a spark discharge-based platinum nanoparticle source in combination with sequentially biased surface electrodes and charged photoresist patterns on a glass substrate. In this way, the parallel growth of multiple sensing nodes, in this case 3D self-aligning nanoparticle-based bridges, is accomplished. An array containing 360 locally grown bridges made out of 5 nm platinum nanoparticles is fabricated. The high surface-to-volume ratio of the 3D bridge morphology enables fast response and room temperature operated sensing capabilities. The bridges are preconditioned for ~ 24 h in nitrogen gas before being used for performance testing, ensuring drift-free sensor performance. In this study, platinum bridges are demonstrated to detect ammonia (NH3) with concentrations between 1400 and 100 ppm. The sensing mechanism, response times, cross-sensitivity, selectivity, and sensor stability are discussed. The device showed a sensor response of ~ 4% at 100 ppm NH3 with a 70% response time of 8 min at room temperature.Nishchay A. IsaacJohannes ReiprichLeslie SchlagPedro H. O. MoreiraMostafa BaloochiVishal A. RahejaAnna-Lena HessLuis F. CentenoGernot EckeJörg PezoldtHeiko O. JacobsNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Nishchay A. Isaac Johannes Reiprich Leslie Schlag Pedro H. O. Moreira Mostafa Baloochi Vishal A. Raheja Anna-Lena Hess Luis F. Centeno Gernot Ecke Jörg Pezoldt Heiko O. Jacobs Three-dimensional platinum nanoparticle-based bridges for ammonia gas sensing
description	Abstract This study demonstrates the fabrication of self-aligning three-dimensional (3D) platinum bridges for ammonia gas sensing using gas-phase electrodeposition. This deposition scheme can guide charged nanoparticles to predetermined locations on a surface with sub-micrometer resolution. A shutter-free deposition is possible, preventing the use of additional steps for lift-off and improving material yield. This method uses a spark discharge-based platinum nanoparticle source in combination with sequentially biased surface electrodes and charged photoresist patterns on a glass substrate. In this way, the parallel growth of multiple sensing nodes, in this case 3D self-aligning nanoparticle-based bridges, is accomplished. An array containing 360 locally grown bridges made out of 5 nm platinum nanoparticles is fabricated. The high surface-to-volume ratio of the 3D bridge morphology enables fast response and room temperature operated sensing capabilities. The bridges are preconditioned for ~ 24 h in nitrogen gas before being used for performance testing, ensuring drift-free sensor performance. In this study, platinum bridges are demonstrated to detect ammonia (NH3) with concentrations between 1400 and 100 ppm. The sensing mechanism, response times, cross-sensitivity, selectivity, and sensor stability are discussed. The device showed a sensor response of ~ 4% at 100 ppm NH3 with a 70% response time of 8 min at room temperature.
format	article
author	Nishchay A. Isaac Johannes Reiprich Leslie Schlag Pedro H. O. Moreira Mostafa Baloochi Vishal A. Raheja Anna-Lena Hess Luis F. Centeno Gernot Ecke Jörg Pezoldt Heiko O. Jacobs
author_facet	Nishchay A. Isaac Johannes Reiprich Leslie Schlag Pedro H. O. Moreira Mostafa Baloochi Vishal A. Raheja Anna-Lena Hess Luis F. Centeno Gernot Ecke Jörg Pezoldt Heiko O. Jacobs
author_sort	Nishchay A. Isaac
title	Three-dimensional platinum nanoparticle-based bridges for ammonia gas sensing
title_short	Three-dimensional platinum nanoparticle-based bridges for ammonia gas sensing
title_full	Three-dimensional platinum nanoparticle-based bridges for ammonia gas sensing
title_fullStr	Three-dimensional platinum nanoparticle-based bridges for ammonia gas sensing
title_full_unstemmed	Three-dimensional platinum nanoparticle-based bridges for ammonia gas sensing
title_sort	three-dimensional platinum nanoparticle-based bridges for ammonia gas sensing
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/1f040e2c67b343858a754484d0fe17cd
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Three-dimensional platinum nanoparticle-based bridges for ammonia gas sensing

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