| People | Locations | Statistics |
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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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Huber, Norbert
Federal Institute For Materials Research and Testing
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2023Densification of nanoporous metals during nanoindentation: The role of structural and mechanical propertiescitations
- 2020A Review of Experimentally Informed Micromechanical Modeling of Nanoporous Metals: From Structural Descriptors to Predictive Structure–Property Relationshipscitations
- 2020Giant electrochemical actuation in a nanoporous silicon-polypyrrole hybrid materialcitations
- 2019Numerical investigation of polymer coated nanoporous goldcitations
- 2018Fatigue Life Extension of AA2024 Specimens and Integral Structures by Laser Shock Peeningcitations
- 2017Artificial neural network for correction of effects of plasticity in equibiaxial residual stress profiles measured by hole drillingcitations
- 2017In-situ experiment for laser beam welding of TiAl alloys using high-energy x-rays
- 2017Effects of laser shock peening on the microstructure and fatigue crack propagation behaviour of thin AA2024 specimenscitations
- 2016Phase Transformation and Residual Stress in a Laser Beam Spot-Welded TiAl-Based Alloycitations
- 2016Scaling laws of nanoporous gold under uniaxial compression : effects of structural disorder on the solid fraction, elastic Poisson's ratio, Young's modulus and yield strength
- 2014Scaling laws of nanoporous metals under uniaxial compressioncitations
- 2014Effect of Post-weld Heat Treatment on Microstructure and Mechanical Properties of Laser Beam Welded TiAl-based Alloycitations
- 2013Crashworthiness of magnesium sheet structurescitations
- 2013On the interaction between different size effects in fibre reinforced PMMAcitations
- 2011Research with Neutron and Synchrotron Radiation on Aerospace and Automotive Materials and Componentscitations
- 2011Modelling and simulation of wear in micro-machines
Places of action
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document
Giant electrochemical actuation in a nanoporous silicon-polypyrrole hybrid material
Abstract
The absence of piezoelectricity in silicon makes direct electromechanical applications of this mainstream semiconductorimpossible. Integrated electrical control of the silicon mechanics, however, would open up new perspectivesfor on-chip actuorics. Here, we combine wafer-scale nanoporosity in single-crystalline silicon withpolymerization of an artificial muscle material inside pore space to synthesize a composite that shows macroscopicelectrostrain in aqueous electrolyte. The voltage-strain coupling is three orders of magnitude larger than the best-performingceramics in terms of piezoelectric actuation. We trace this huge electroactuation to the concerted actionof 100 billions of nanopores per square centimeter cross section and to potential-dependent pressures of up to150 atmospheres at the single-pore scale. The exceptionally small operation voltages (0.4 to 0.9 volts), along withthe sustainable and biocompatible base materials, make this hybrid promising for bioactuator applications.