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Electrochemically Controlled Hydrogels with Electrotunable Permeability and Uniaxial Actuation.
Benselfelt, Tobias; Shakya, Jyoti; Rothemund, Philipp; Lindström, Stefan B; Piper, Andrew; Winkler, Thomas E; Hajian, Alireza; Wågberg, Lars; Keplinger, Christoph; Hamedi, Mahiar Max.
Afiliación
  • Benselfelt T; Department of Fibre and Polymer Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm, 100 44, Sweden.
  • Shakya J; Department of Fibre and Polymer Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm, 100 44, Sweden.
  • Rothemund P; Robotic Materials Department, Max Planck Institute for Intelligent Systems, 70569, Stuttgart, Germany.
  • Lindström SB; Department of Management and Engineering, Division of Solid Mechanics, Linköping University, Linköping, 58183, Sweden.
  • Piper A; Department of Fibre and Polymer Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm, 100 44, Sweden.
  • Winkler TE; Institute of Microtechnology & Center of Pharmaceutical Engineering, Technische Universität Braunschweig, 38106, Braunschweig, Germany.
  • Hajian A; Department of Fibre and Polymer Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm, 100 44, Sweden.
  • Wågberg L; Department of Fibre and Polymer Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm, 100 44, Sweden.
  • Keplinger C; Robotic Materials Department, Max Planck Institute for Intelligent Systems, 70569, Stuttgart, Germany.
  • Hamedi MM; Paul M. Rady Department of Mechanical Engineering, University of Colorado, Boulder, CO, 80309, USA.
Adv Mater ; 35(45): e2303255, 2023 Nov.
Article en En | MEDLINE | ID: mdl-37451686
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 ≈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 ≈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.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Adv Mater Asunto de la revista: BIOFISICA / QUIMICA Año: 2023 Tipo del documento: Article País de afiliación: Suecia Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Adv Mater Asunto de la revista: BIOFISICA / QUIMICA Año: 2023 Tipo del documento: Article País de afiliación: Suecia Pais de publicación: Alemania