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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Boland, Conor S.
University of Sussex
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2024Hometronics – accessible production of graphene suspensions for health sensing applications using only household items
- 2023Food-Inspired, High-Sensitivity Piezoresistive Graphene Hydrogelscitations
- 2023Smart Skins Based on Assembled Piezoresistive Networks of Sustainable Graphene Microcapsules for High Precision Health Diagnosticscitations
- 2020Quantifying the contributing factors towards signal fatigue in nanocomposite strain sensorscitations
- 2019Stumbling through the research wilderness, standard methods to shine light on electrically conductive nanocomposites for future healthcare monitoringcitations
- 2019Negative Gauge Factor Piezoresistive Composites Based on Polymers Filled with MoS2 Nanosheetscitations
- 2017Enabling Flexible Heterostructures for Li-Ion Battery Anodes Based on Nanotube and Liquid-Phase Exfoliated 2D Gallium Chalcogenide Nanosheet Colloidal Solutionscitations
- 2016Multifaceted sensors based on conductive nanocomposites
- 2016Sensitive electromechanical sensors using viscoelastic graphene-polymer nanocompositescitations
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article
Sensitive electromechanical sensors using viscoelastic graphene-polymer nanocomposites
Abstract
Despite its widespread use in nanocomposites, the effect of embedding graphene in highly viscoelastic polymer matrices is not well understood. We added graphene to a lightly cross-linked polysilicone, often encountered as Silly Putty, changing its electromechanical properties substantially. The resulting nanocomposites display unusual electromechanical behavior, such as postdeformation temporal relaxation of electrical resistance and nonmonotonic changes in resistivity with strain. These phenomena are associated with the mobility of the nanosheets in the low-viscosity polymer matrix. By considering both the connectivity and mobility of the nanosheets, we developed a quantitative model that completely describes the electromechanical properties. These nanocomposites are sensitive electromechanical sensors with gauge factors >500 that can measure pulse, blood pressure, and even the impact associated with the footsteps of a small spider.