functional polymers; dielectric elastomer actuators; polymer synthesis; high permittivity silicones; smart materials; thiol-ene post polymerization modification
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.
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.
Sheima Yauhen, Caspari Philip, Opris Dorina M. (2019), Artificial Muscles: Dielectric Elastomers Responsive to Low Voltages, in Macromolecular Rapid Communications
, 40(16), 1900205-1900205.
OprisdDorina M. (2017), Polar Elastomers as Novel Materials for Electromechanical Actuator Applications, in Advanced Materials
, 30, 1703678 (1-(23).
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.