Volumetric 3D-Printed Piezoelectric Polymer Films

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • Achidi Frick - , Vrije Universiteit Amsterdam (VU) (Autor:in)
  • Wesley Alexander van Vliet - , Photosynthetic B.V. (Autor:in)
  • Agnė Žukauskaitė - , Professur für Beschichtungstechnologien für die Elektronik (gB/FG), Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology (Autor:in)
  • Olaf Zywitzki - , Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology (Autor:in)
  • Thomas Modes - , Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology (Autor:in)
  • Alexander Kostenko - , Photosynthetic B.V. (Autor:in)
  • Elizabeth von Hauff - , Professur für Beschichtungstechnologien für die Elektronik (gB/FG), Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology (Autor:in)

Abstract

A novel additive manufacturing route using a tailored resin containing Poly(vinylidene fluoride) Trifluoroethylene (PVDF-TrFE) to 3D print piezoelectric films is demonstrated. Piezoelectric films are printed within 2 seconds in a single step by simultaneously focusing initiating and inhibiting excitations within the liquid resin to locally confine the photochemical reaction. The printed films are patterned with an array of holes with a diameter of 30 µm and a pitch of 55 µm. The piezoelectric response is homogeneous across the film, indicating that the print pattern does not impact the PVDF-TrFE microstructure. Although the printed films contain only a small volume fraction of PVDF-TrFE (3 wt.%), their piezoelectric response (d33 = 20.3 pC/N) is comparable to the highest literature values reported for PVDF-TrFE films. The printed PVDF-TrFE films are predominantly β-phase, and no electrical poling, post-processing, piezoelectric or inorganic additives are used in the fabrication. Analysis using piezoresponse force microscopy (PFM) and scanning electron microscopy (SEM) reveals that the enhanced piezoelectric response is due to the preferential formation of oriented PVDF-TrFE phases during printing. These results demonstrate how the dedicated design of photoactive resins in combination with volumetric additive manufacturing can be applied to rapidly fabricate functional 3D structures.

Details

OriginalspracheEnglisch
Aufsatznummer2301469
FachzeitschriftAdvanced materials technologies
Jahrgang9
Ausgabenummer6
PublikationsstatusVeröffentlicht - 18 März 2024
Peer-Review-StatusJa

Schlagworte

Schlagwörter

  • additive manufacturing, piezoelectric, polymer, PVDF, volumetric