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1. (WO2018087342) STIFFNESS CONTROL FOR ELECTROACTIVE ACTUATORS

Pub. No.:    WO/2018/087342    International Application No.:    PCT/EP2017/078968
Publication Date: Fri May 18 01:59:59 CEST 2018 International Filing Date: Sat Nov 11 00:59:59 CET 2017
IPC: H01L 41/04
H01L 41/09
H01L 41/18
F03G 7/00
A61M 25/01
Applicants: KONINKLIJKE PHILIPS N.V.
Inventors: PELSSERS, Eduard, Gerard, Marie
HENDRIKS, Cornelis, Petrus
HAKKENS, Franciscus, Johannes, Gerardus
HILGERS, Achim
VAN DEN ENDE, Daan, Anton
JOHNSON, Mark, Thomas
Title: STIFFNESS CONTROL FOR ELECTROACTIVE ACTUATORS
Abstract:
An actuator device is provided having a controllable stiffness profile, wherein an actuator member (12) comprises an electroactive polymer material (16) having light absorbing filler elements (20) embedded therein. The filler elements are adapted to absorb and convert incident light (26) to heat energy to therefore heat surrounding sections of the electroactive material. By selectively controlling an intensity level or spectral composition of a light source (24) directed at the actuator member, a specific degree and spread of heating can be achieved across the member and, as a result, a specific desired stiffness or flexibility profile can be realised across the actuator member.