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Electrochemically C...
Electrochemically Controlled Hydrogels with Electrotunable Permeability and Uniaxial Actuation
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- Benselfelt, Tobias (author)
- KTH Royal Inst Technol, Sweden,Department of Fibre and Polymer Technology School of Engineering Sciences in Chemistry Biotechnology and Health KTH Royal Institute of Technology Stockholm 100 44 Sweden
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- Shakya, Jyoti (author)
- KTH Royal Inst Technol, Sweden,Department of Fibre and Polymer Technology School of Engineering Sciences in Chemistry Biotechnology and Health KTH Royal Institute of Technology Stockholm 100 44 Sweden
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- Rothemund, Philipp (author)
- Max Planck Inst Intelligent Syst, Germany,Robotic Materials Department Max Planck Institute for Intelligent Systems 70569 Stuttgart Germany
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- Lindström, Stefan (author)
- Linköpings universitet,Mekanik och hållfasthetslära,Tekniska fakulteten,Department of Management and Engineering Division of Solid Mechanics Linköping University Linköping 58183 Sweden
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- Piper, Andrew (author)
- KTH Royal Inst Technol, Sweden,Department of Fibre and Polymer Technology School of Engineering Sciences in Chemistry Biotechnology and Health KTH Royal Institute of Technology Stockholm 100 44 Sweden
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- Winkler, Thomas E. (author)
- Tech Univ Carolo Wilhelmina Braunschweig, Germany; Tech Univ Carolo Wilhelmina Braunschweig, Germany,Institute of Microtechnology & Center of Pharmaceutical Engineering Technische Universität Braunschweig 38106 Braunschweig Germany
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- Hajian, Alireza (author)
- KTH Royal Inst Technol, Sweden,Department of Fibre and Polymer Technology School of Engineering Sciences in Chemistry Biotechnology and Health KTH Royal Institute of Technology Stockholm 100 44 Sweden
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- Wagberg, Lars (author)
- KTH Royal Inst Technol, Sweden,Department of Fibre and Polymer Technology School of Engineering Sciences in Chemistry Biotechnology and Health KTH Royal Institute of Technology Stockholm 100 44 Sweden
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- Keplinger, Christoph (author)
- Max Planck Inst Intelligent Syst, Germany; Univ Colorado, CO 80309 USA; Univ Colorado, CO 80309 USA,Robotic Materials Department Max Planck Institute for Intelligent Systems 70569 Stuttgart Germany;Paul M. Rady Department of Mechanical Engineering University of Colorado Boulder CO 80309 USA;Materials Science and Engineering Program University of Colorado Boulder CO 80309 USA
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- Hamedi, Mahiar Max (author)
- KTH Royal Inst Technol, Sweden,Department of Fibre and Polymer Technology School of Engineering Sciences in Chemistry Biotechnology and Health KTH Royal Institute of Technology Stockholm 100 44 Sweden
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(creator_code:org_t)
- WILEY-V C H VERLAG GMBH, 2023
- 2023
- English.
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In: Advanced Materials. - : WILEY-V C H VERLAG GMBH. - 0935-9648 .- 1521-4095. ; 35:45
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- The unique properties of hydrogels enable the design of life-like soft intelligent systems. However, stimuli-responsive hydrogels still suffer from limited actuation control. Direct electronic control of electronically conductive hydrogels can solve this challenge and allow direct integration with modern electronic systems. An electrochemically controlled nanowire composite hydrogel with high in-plane conductivity that stimulates a uniaxial electrochemical osmotic expansion is demonstrated. This materials system allows precisely controlled shape-morphing at only -1 V, where capacitive charging of the hydrogel bulk leads to a large uniaxial expansion of up to 300%, caused by the ingress of & AP;700 water molecules per electron-ion pair. The material retains its state when turned off, which is ideal for electrotunable membranes as the inherent coupling between the expansion and mesoporosity enables electronic control of permeability for adaptive separation, fractionation, and distribution. Used as electrochemical osmotic hydrogel actuators, they achieve an electroactive pressure of up to 0.7 MPa (1.4 MPa vs dry) and a work density of & AP;150 kJ m-3 (2 MJ m-3 vs dry). This new materials system paves the way to integrate actuation, sensing, and controlled permeation into advanced soft intelligent systems. The unique properties of hydrogels enable the design of life-like soft intelligent systems. This work demonstrates how the swelling of hydrogels from cellulose nanofibrils and carbon nanotubes can be electrochemically controlled to achieve electrochemical osmotic actuation. This new materials system paves the way for integrated actuation, sensing, and controlled permeation in electrotunable separation membranes or soft actuators.image
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
- NATURVETENSKAP -- Kemi -- Polymerkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Polymer Chemistry (hsv//eng)
Keyword
- electrochemical actuation; electronic actuators; hydrogels; nanowires; osmotic pressure; tunable membranes
Publication and Content Type
- ref (subject category)
- art (subject category)
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Benselfelt, Tobi ...
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Shakya, Jyoti
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Rothemund, Phili ...
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Lindström, Stefa ...
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Piper, Andrew
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Winkler, Thomas ...
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Hajian, Alireza
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Wagberg, Lars
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Keplinger, Chris ...
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Hamedi, Mahiar M ...
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- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Electrical Engin ...
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and Other Electrical ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Polymer Chemistr ...
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Advanced Materia ...
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Linköping University
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Mid Sweden University