Fabrication of piezoelectric composites using high temperature dielectrophoresis technique

Jibran Khaliq (Inventor), Sybrand Van der Zwaag (Inventor), Wilhelm Albert Groen (Inventor), Theodorus Lambertus Hoeks (Inventor), Peter Vollenberg (Inventor)

Research output: Patent

Abstract

A method of making an aligned piezoelectric composite comprising contacting a thermoplastic material with a plurality of piezoelectric particles to form a thermoplastic material and piezoelectric particles mixture; applying an alternating current electric field across the thermoplastic material and piezoelectric particles mixture to structurally align the piezoelectric particles within the alternating current electric field; heating the thermoplastic material and piezoelectric particles mixture to form a molten polymer composite, while continuing to apply the alternating current electric field; maintaining the alternating current electric field across the molten polymer composite; cooling the molten polymer composite to form a structurally aligned piezoelectric composite, while continuing to apply the alternating current electric field; discontinuing the alternating current electric field; and applying a direct current electric field across the structurally aligned piezoelectric composite to align electric dipoles of the piezoelectric particles within the direct current electric field and to produce the aligned piezoelectric composite.
Original languageEnglish
IPCH01L41/183
Priority date8/08/16
Filing date15/02/18
Publication statusPublished - 15 Feb 2018

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