Piezoelectric AlN films for FPW sensors with improved device performance

Abstract: Reactively sputtered piezoelectric aluminum nitride (AlN) films for flexural plate wave (FPW) electroacoustic sensors equipped with buried interdigital transducers (IDTs) for sensing in liquids were fabricated and characterized. In order to assess the crystallographic and elastic film properties, residual film stress, and piezoelectric response, comprehensive analyses were performed on AlN layers and bimorph AlN structures, including X-ray diffraction, atomic force microscopy, and nanoindentation, in combination with analysis of the piezoelectric charge coefficient d33,f. To demonstrate the applicability of the optimized AlN films to electro-acoustic devices, IDT equipped devices were fabricated and characterized by means of laser Doppler vibrometry

Location
Deutsche Nationalbibliothek Frankfurt am Main
Extent
Online-Ressource
Language
Englisch
Notes
Procedia engineering. - 168 (2016) , 1040-1043, ISSN: 1877-7058

Event
Veröffentlichung
(where)
Freiburg
(who)
Universität
(when)
2025
Creator
Reusch, Markus
Holc, Katarzyna
Kirste, Lutz
Katus, Philip
Reindl, Leonhard M.
Ambacher, Oliver
Lebedev, Vadim

DOI
10.1016/j.proeng.2016.11.335
URN
urn:nbn:de:bsz:25-freidok-1724009
Rights
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Last update
15.08.2025, 7:38 AM CEST

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Associated

Time of origin

  • 2025

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