Print Email Facebook Twitter Production, design and control of P(VDF-TrFE-CTFE) relaxor-ferroelectric actuators Title Production, design and control of P(VDF-TrFE-CTFE) relaxor-ferroelectric actuators Author van der Nolle, Rens (TU Delft Mechanical, Maritime and Materials Engineering) Contributor Hossein Nia Kani, S.H. (mentor) Herder, J.L. (graduation committee) Goosen, J.F.L. (graduation committee) Degree granting institution Delft University of Technology Programme Mechanical Engineering | Mechatronic System Design (MSD) Date 2017-07-03 Abstract The amount of research and development in smart materials is increasing every year. These smart materials offer a solution to integrated and distributed actuation and sensing. Pressure sensors, acoustic transducers, deformable mirrors, micro-robotics and stiffness control of flapping wings are some applicationswhere these smart materials show great promise over their external actuated counterparts. New materials are developed and reported regularly, P(VDF-TrFE-CTFE) a relaxor-ferroelectric polymer is such a smart material. Relaxor ferroelectric materials can convert electrical signals to mechanical strain and vice versa, allowing the possibility to act as an actuator and sensor in one. This relatively new material has some promising parameters, with a dielectric constant of 50, Young’s modulus of 0.4 GPa, coupling factor of 0.3 and transparency above 88%, where 100% is no disruption of light at all. With these properties P(VDF-TrFE-CTFE) can serve as a useful component in mechatronic systems. In this thesis, the possibilities in production and enhancement of P(VDF-TrFE-CTFE) are discussed and experimentally validated. The piezoelectric and electrostrictive response in such polymers are formed through polarisation and annealing processes. This thesis shall prove as a guide to achieve the maximum electromechanical performance of a relaxor-ferroelectric polymer, a new method to successfully polarise this relaxor ferroelectric polymer is presented and a novel way to remove residual stresses after spin casting of thin film polymers is proposed. Subject Relaxor-ferroelectricpiezoelectricpolymersmart materialsproductioncontrol To reference this document use: http://resolver.tudelft.nl/uuid:b59a695b-ad30-4432-b469-134b64e4713f Embargo date 2019-07-03 Part of collection Student theses Document type master thesis Rights © 2017 Rens van der Nolle Files PDF report.pdf 26.39 MB Close viewer /islandora/object/uuid:b59a695b-ad30-4432-b469-134b64e4713f/datastream/OBJ/view