Title :
Optimized flextensional transducers for an implantable hearing aid
Author :
Schmitt, Daniel ; Weber, Peter K. ; Pelinescu, Ion ; Park, Seung-Eek
Author_Institution :
Fraunhofer Inst. Biomedizinische Technik, St. Ingbert, Germany
Abstract :
Relaxor single crystal based flextensional transducers were investigated for an implantable hearing aid application. Oval shape cymbal structure, adopted due to anatomic requirement, was simulated using finite element analysis (FEA). The optimum lateral orientation was determined to be <100> along the longer direction of oval cap. The simulation results suggest that optimized single crystal transducers offer 100% improved performance over the analogous PZT transducers, adequate for implantable hearing aid device applications.
Keywords :
acoustic transducers; finite element analysis; hearing aids; piezoelectric transducers; relaxor ferroelectrics; anatomic requirement; finite element analysis; implantable hearing aid; optimized flextensional transducers; optimum lateral orientation; oval shape cymbal structure; relaxor single crystal; Acoustic transducers; Anisotropic magnetoresistance; Auditory system; Ceramics; Crystallography; Crystals; Niobium; Piezoelectric transducers; Shape; Vibrations;
Conference_Titel :
Ultrasonics Symposium, 2002. Proceedings. 2002 IEEE
Print_ISBN :
0-7803-7582-3
DOI :
10.1109/ULTSYM.2002.1192526
