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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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Khan, Umar
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2023Double-diffusive stagnation point flow over a vertical surface with thermal radiation: Assisting and opposing flowscitations
- 2023Unsteady non-axisymmetric MHD Homann stagnation point flow of CNTs-suspended nanofluid over convective surface with radiation using Yamada–Ota modelcitations
- 2022Wafer-level hermetically sealed silicon photonic MEMScitations
- 2021Silicon photonic microelectromechanical phase shifters for scalable programmable photonicscitations
- 2016Sensitive electromechanical sensors using viscoelastic graphene-polymer nanocompositescitations
- 2016Understanding the Dispersion and Assembly of Bacterial Cellulose in Organic Solventscitations
- 2015Design, fabrication and characterisation of nano-imprinted single mode waveguide structures for intra-chip optical communicationscitations
- 2014Reinforcement in melt-processed polymer-graphene composites at extremely low graphene loading levelcitations
- 2012High strength composite fibres from polyester filled with nanotubes and graphenecitations
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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.