Article (Scientific journals)
3D-Printed Stacked Ionic Assemblies for Iontronic Touch Sensors
Odent, Jérémy; Baleine, Nicolas; Biard, Valentin et al.
2022In Advanced Functional Materials, p. 2210485
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Keywords :
iontronic sensors; stacked ionic assemblies; stereolithography; touch-pressure monitoring; Environmental parameter; Ionic assemblies; Iontronic sensor; Physico-chemicals; Pressure monitoring; Self-powered; Stacked ionic assembly; Streaming Potential; Touch sensors; Touch-pressure monitoring; Chemistry (all); Materials Science (all); Condensed Matter Physics; Electrochemistry; Biomaterials; Electronic, Optical and Magnetic Materials
Abstract :
[en] Sensing is the process of detecting and monitoring any physico-chemical environmental parameters. Herein, new self-powered iontronic sensors, which utilize touch-induced ionic charge separation in ionically conductive hydrogels, are introduced for potential use in object mapping, recognition, and localization. This is accomplished using high-resolution stereolithography (SLA) 3D printing of stacked ionic assemblies consisting of discrete compartments having different ion transport properties. The latter assemblies readily allow programming the output voltage magnitude and polarity by means of variations in ion type, charge density, and cross-linking density within the iontronic device. Voltages of up to 70 mV are generated on application of compressive strains of as much as 50% (≈22.5 kPa), with the magnitude directly proportional to stress, and the polarity dependent on the sign of the mobile ion. As a proof-of-concept demonstration, the resulting touch sensors are integrated on the fingertip to enable the tactile feedback, mimicking the tactile perception of objects for recognition applications. In addition, it is proposed that streaming potential is the underlying mechanism behind the iontronic touch sensors. The electromechanical response is therein consistent with a streaming potential model.
Disciplines :
Materials science & engineering
Author, co-author :
Odent, Jérémy   ;  Université de Mons - UMONS > Faculté des Sciences > Service des Matériaux Polymères et Composites
Baleine, Nicolas ;  Université de Mons - UMONS > Faculté des Sciences > Service des Matériaux Polymères et Composites
Biard, Valentin;  Laboratory of Polymeric and Composite Materials (LPCM), Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons (UMONS), Mons, Belgium
Dobashi, Yuta;  Institute of Medical Science, University of Toronto, Toronto, Canada
Vancaeyzeele, Cédric;  The Laboratory of Physical Chemistry of Polymers and Interfaces (LPPI), CY Cergy Paris Université, Cergy, France
Nguyen, Giao T. M.;  The Laboratory of Physical Chemistry of Polymers and Interfaces (LPPI), CY Cergy Paris Université, Cergy, France
Madden, John D. W.;  Advanced Materials and Process Engineering Laboratory, Electrical and Computer Engineering, University of British Columbia, Vancouver, Canada
Plesse, Cédric;  The Laboratory of Physical Chemistry of Polymers and Interfaces (LPPI), CY Cergy Paris Université, Cergy, France
Raquez, Jean-Marie  ;  Université de Mons - UMONS > Faculté des Sciences > Service des Matériaux Polymères et Composites
 These authors have contributed equally to this work.
Language :
English
Title :
3D-Printed Stacked Ionic Assemblies for Iontronic Touch Sensors
Publication date :
2022
Journal title :
Advanced Functional Materials
ISSN :
1616-301X
eISSN :
1616-3028
Publisher :
John Wiley and Sons Inc
Pages :
2210485
Peer reviewed :
Peer Reviewed verified by ORBi
Research institute :
R400 - Institut de Recherche en Science et Ingénierie des Matériaux
Funders :
European Regional Development Fund
Fédération Wallonie-Bruxelles
Funding text :
We gratefully acknowledge support from the Belgian Federal Government Office of Science Policy (SSTC‐PAI 6/27) as well as both Wallonia and the European Commission “FSE and FEDER”. The authors acknowledge the Interreg France‐Wallonie‐Vlaanderen program, 3D4Med, with the financial support of the European Regional Development Fund (ERDF). J.‐M.R. is a senior research associate at F.R.S.‐F.N.R.S. (Belgium).
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