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Functional stretchable elastomers and devices

English title Functional stretchable elastomers and devices
Applicant Opris Dorina Maria
Number 172693
Funding scheme Project funding (Div. I-III)
Research institution Abteilung Funktionspolymere EMPA
Institution of higher education Swiss Federal Laboratories for Materials Science and Technology - EMPA
Main discipline Material Sciences
Start/End 01.09.2017 - 31.08.2021
Approved amount 308'428.00
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All Disciplines (2)

Discipline
Material Sciences
Chemical Engineering

Keywords (6)

functional polymers; dielectric elastomer actuators; polymer synthesis; high permittivity silicones; smart materials; thiol-ene post polymerization modification

Lay Summary (German)

Lead
Dorina M. Opris
Lay summary

Weiche und nachgiebige funktionelle Materialien und Bauteile, welche bei externem Stimulus Energie von der einen in die andere Form konvertieren, sind von grosser Bedeutung in den aufkommenden, zukünftigen Energietechnologien. Sie können als Aktoren in künstlichen Muskeln eingesetzt werden, produzieren bei Bedarf Energie und können als Sensoren verwendet werden. Eines Tages werden diese attraktiven Funktionen dank dielektrischen Elastomer-Umwandler (DET) möglich sein. DET sind elastische Kondensatoren, welche als Aktoren, Generatoren und Sensoren betrieben werden. Nachteilig wirkt sich beim heutigen Stand der Technologie die hohe Betriebsspannung aus. Neben den zahlreichen Anforderungen, die erfüllt werden müssen, zählt die Erhöhung der dielektrischen Permitivität zu den wichtigsten. Dabei dürfen jedoch weitere dielektrische oder mechanische Eigenschaften nicht verändert werden. Das Ziel dieses Projektes ist die Entwicklung eines neuartigen Elastomers mit hoher Dielektrizitätskonstante für den Einsatz als DET in Sensoren und Energiegeneratoren mit noch nie da gewesener tiefer Betriebsspannung (<100 V). Dieses Ziel soll mit der Entwicklung von neuen, fortgeschrittenen funktionellen Materialien erreicht werden. Das Projektvorhaben soll eine tiefgreifende Verbesserung des rationalen Designs von DET Materialien hervorbringen, sowie das Verständnis der Struktur-Eigenschaftsbeziehung ergründen. Neuartige dielektrische Elastomere und Bauteile mit einem grossen Potential für technologische Anwendungen sollen demonstriert werden.

Direct link to Lay Summary Last update: 12.06.2017

Responsible applicant and co-applicants

Employees

Publications

Publication
Electrically Driven Artificial Muscles Using Novel Polysiloxane Elastomers Modified with Nitroaniline Push–Pull Moieties
Perju Elena, Shova Sergiu, Opris Dorina M. (2020), Electrically Driven Artificial Muscles Using Novel Polysiloxane Elastomers Modified with Nitroaniline Push–Pull Moieties, in ACS Applied Materials & Interfaces, 12(20), 23432-23442.
Synthesis of solvent-free processable and on-demand cross-linkable dielectric elastomers for actuators
CaspariPhilip, NüeschFrank, OprisDorina M. (2019), Synthesis of solvent-free processable and on-demand cross-linkable dielectric elastomers for actuators, in Journal of Materials Chemistry C, 7, 12139-12150.
Artificial Muscles: Dielectric Elastomers Responsive to Low Voltages
Sheima Yauhen, Caspari Philip, Opris Dorina M. (2019), Artificial Muscles: Dielectric Elastomers Responsive to Low Voltages, in Macromolecular Rapid Communications, 40(16), 1900205-1900205.
Polar Elastomers as Novel Materials for Electromechanical Actuator Applications
OprisdDorina M. (2017), Polar Elastomers as Novel Materials for Electromechanical Actuator Applications, in Advanced Materials, 30, 1703678 (1-(23).

Collaboration

Group / person Country
Types of collaboration
Martin Tress Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
EDMX Research Day 2019 Poster Low voltage actuators with polar silicones 29.11.2019 Lausanne, Switzerland Sheima Yauhen;
Seminar at Dartmouth College, October 15, 2019, Hanover, New Hampshire, USA Individual talk Smart dielectric elastomers: from synthesis to applications 15.10.2019 New Hampshire, United States of America Opris Dorina Maria;
5th International Fall School on Organic Electronics (IFSOE-2019), IFSOE-2019 robotics Talk given at a conference Functional dielectric elastomers: from synthesis to applications 15.09.2019 Moscow, Russia Opris Dorina Maria;
17th IEEE International Symposium on Electrets (ISE 2019), September 2-6 Talk given at a conference Smart Capacitors 02.09.2019 Limerick, Ireland Opris Dorina Maria;
European Polymer Congress 2019, Heraklion, June 9-14, 2019 Individual talk Artificial muscles responsive to low voltages 09.06.2019 Heraklion, Greece Opris Dorina Maria;
EuroEAP Poster Dielectric elastomer generators based on silicone/nanospringcarbon-nanotubes composite 04.06.2019 Dresden, Germany Caspari Philip; Sheima Yauhen; Opris Dorina Maria;
EuroEAP 2019, 4-6 June, 2019, Dresden, Germany Individual talk Thin functional dielectric elastomers: synthesis and applications 04.06.2019 Dresden, Germany Opris Dorina Maria;
SCS Fall Meeting 2018 Poster Low voltage actuators with polar silicones 07.09.2018 Lausanne, Switzerland Sheima Yauhen; Opris Dorina Maria;
CIMTEC 2018, June 11-15, 2018, Perugia, Italy Talk given at a conference Thin Functional Dielectric Elastomers for Stretchable Devices 18.06.2018 Perugia, Italy Opris Dorina Maria;
Élastomères et applications médicales: Quelles Innovations?, June 7, 2018, Lyon, France Individual talk Artificial muscles for medical applications 07.06.2018 Lyon, France Opris Dorina Maria;
Euro EAP Poster Dielectric elastomer actuators operated below 300 V 05.06.2018 Lyon, France Sheima Yauhen; Opris Dorina Maria;


Communication with the public

Communication Title Media Place Year
Print (books, brochures, leaflets) annual report of the ETH board on the ETH domain 2028 German-speaking Switzerland Western Switzerland Italian-speaking Switzerland Rhaeto-Romanic Switzerland 2019

Awards

Title Year
EuroEAP Society award “For important contributions to the field of new materials for Dielectric Elastomer Transducers” at the Ninth international conference on Electromechanically Active Polymer (EAP) transducers & artificial muscles, June 5th 2019, Dresden, Germany. 2019

Associated projects

Number Title Start Funding scheme
142215 Energy harvesting by dielectric elastomer generators 01.01.2013 Romanian-Swiss Research Programme (RSRP)
142215 Energy harvesting by dielectric elastomer generators 01.01.2013 Romanian-Swiss Research Programme (RSRP)
173526 Synthesis of polysiloxanes containing nitroaniline groups at defined positions 01.02.2017 International short research visits

Abstract

Soft and compliant functional materials and devices that convert one form of energy into another in response to external stimuli, produce energy on demand, can sense environment changes, and can mimic natural muscles are of great importance for future emerging technologies. These appealing functions will be possible one day thanks to progress in dielectric elastomer transducers (DET) technology. DET are elastic capacitors which can function as actuators, generators, or sensors. A large variety of applications have been proposed which range from actuators, optical devices, robotics, sensors, energy harvesters, valves, pumps, to muscle replacement. This is because of a number of properties including a simple working principle and construction, ease of fabrication in different shapes and sizes, and low weight and noiseless operation. The main drawback of this technology is the high voltage required for operation. The commercialization of this technology will significantly improve if dielectric elastomer materials with better performance were available. Of the various requirements that have to be met are an increased dielectric permittivity, while maintaining all of the other dielectric and mechanical properties. The aim of this project is to develop novel high permittivity dielectric elastomers to be used in DETs operated at unprecedentedly low voltages (< 100 V), in sensors or energy harvesters. To achieve this, new advanced functional materials will be developed. High permittivity elastomers will be achieved by modifying polysiloxanes with polar groups. Functional devices incorporating these novel materials will be constructed and their performance evaluated.The proposed research project will result in a profound improvement to the rational design of materials for DET as well as in the understanding of structure property relationships. It will also deliver novel dielectric elastomers and devices with high technological applicability.
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