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Heading toward Miniature Sensors: Electrical Conductance of Linearly Assembled Gold Nanorods
Metal nanoparticles are increasingly used as key elements in the fabrication and processing of advanced electronic systems and devices. For future device integration, their charge transport properties are essential. This has been exploited, e.g., in the development of gold-nanoparticle-based conduct...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10179793/ https://www.ncbi.nlm.nih.gov/pubmed/37177011 http://dx.doi.org/10.3390/nano13091466 |
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author | Hoffmann, Marisa Schedel, Christine Alexandra Mayer, Martin Rossner, Christian Scheele, Marcus Fery, Andreas |
author_facet | Hoffmann, Marisa Schedel, Christine Alexandra Mayer, Martin Rossner, Christian Scheele, Marcus Fery, Andreas |
author_sort | Hoffmann, Marisa |
collection | PubMed |
description | Metal nanoparticles are increasingly used as key elements in the fabrication and processing of advanced electronic systems and devices. For future device integration, their charge transport properties are essential. This has been exploited, e.g., in the development of gold-nanoparticle-based conductive inks and chemiresistive sensors. Colloidal wires and metal nanoparticle lines can also be used as interconnection structures to build directional electrical circuits, e.g., for signal transduction. Our scalable bottom-up, template-assisted self-assembly creates gold-nanorod (AuNR) lines that feature comparably small widths, as well as good conductivity. However, the bottom-up approach poses the question about the consistency of charge transport properties between individual lines, as this approach leads to heterogeneities among those lines with regard to AuNR orientation, as well as line defects. Therefore, we test the conductance of the AuNR lines and identify requirements for a reliable performance. We reveal that multiple parallel AuNR lines (>11) are necessary to achieve predictable conductivity properties, defining the level of miniaturization possible in such a setup. With this system, even an active area of only 16 µm(2) shows a higher conductance (~10(−5) S) than a monolayer of gold nanospheres with dithiolated-conjugated ligands and additionally features the advantage of anisotropic conductance. |
format | Online Article Text |
id | pubmed-10179793 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-101797932023-05-13 Heading toward Miniature Sensors: Electrical Conductance of Linearly Assembled Gold Nanorods Hoffmann, Marisa Schedel, Christine Alexandra Mayer, Martin Rossner, Christian Scheele, Marcus Fery, Andreas Nanomaterials (Basel) Article Metal nanoparticles are increasingly used as key elements in the fabrication and processing of advanced electronic systems and devices. For future device integration, their charge transport properties are essential. This has been exploited, e.g., in the development of gold-nanoparticle-based conductive inks and chemiresistive sensors. Colloidal wires and metal nanoparticle lines can also be used as interconnection structures to build directional electrical circuits, e.g., for signal transduction. Our scalable bottom-up, template-assisted self-assembly creates gold-nanorod (AuNR) lines that feature comparably small widths, as well as good conductivity. However, the bottom-up approach poses the question about the consistency of charge transport properties between individual lines, as this approach leads to heterogeneities among those lines with regard to AuNR orientation, as well as line defects. Therefore, we test the conductance of the AuNR lines and identify requirements for a reliable performance. We reveal that multiple parallel AuNR lines (>11) are necessary to achieve predictable conductivity properties, defining the level of miniaturization possible in such a setup. With this system, even an active area of only 16 µm(2) shows a higher conductance (~10(−5) S) than a monolayer of gold nanospheres with dithiolated-conjugated ligands and additionally features the advantage of anisotropic conductance. MDPI 2023-04-25 /pmc/articles/PMC10179793/ /pubmed/37177011 http://dx.doi.org/10.3390/nano13091466 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Hoffmann, Marisa Schedel, Christine Alexandra Mayer, Martin Rossner, Christian Scheele, Marcus Fery, Andreas Heading toward Miniature Sensors: Electrical Conductance of Linearly Assembled Gold Nanorods |
title | Heading toward Miniature Sensors: Electrical Conductance of Linearly Assembled Gold Nanorods |
title_full | Heading toward Miniature Sensors: Electrical Conductance of Linearly Assembled Gold Nanorods |
title_fullStr | Heading toward Miniature Sensors: Electrical Conductance of Linearly Assembled Gold Nanorods |
title_full_unstemmed | Heading toward Miniature Sensors: Electrical Conductance of Linearly Assembled Gold Nanorods |
title_short | Heading toward Miniature Sensors: Electrical Conductance of Linearly Assembled Gold Nanorods |
title_sort | heading toward miniature sensors: electrical conductance of linearly assembled gold nanorods |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10179793/ https://www.ncbi.nlm.nih.gov/pubmed/37177011 http://dx.doi.org/10.3390/nano13091466 |
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