3D-Printed Bionic Ear for Sound Identification and Localization Based on In Situ Polling of PVDF-TrFE Film

Caokun Yang; Yong Xiang; Bin Liao; Xiaoran Hu

doi:10.1002/mabi.202200374

3D-Printed Bionic Ear for Sound Identification and Localization Based on In Situ Polling of PVDF-TrFE Film

Macromol Biosci. 2023 Feb;23(2):e2200374. doi: 10.1002/mabi.202200374. Epub 2022 Dec 7.

Authors

Caokun Yang^{1

2}, Yong Xiang^{1

2

3}, Bin Liao⁴, Xiaoran Hu^{1

2

3}

Affiliations

¹ School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, China.
² Advanced Energy Institute, University of Electronic Science and Technology of China, Chengdu, 611731, China.
³ Sichuan Flexible Display Materials Genome Engineering Center, Chengdu, 611731, China.
⁴ Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, No. 29 Zhongguancun East Road, Haidian District, Beijing, 100190, P. R. China.

PMID: 36408815
DOI: 10.1002/mabi.202200374

Abstract

Bionic acoustic sensors are an indispensable part to realize interactions between humans and robotics. In this work, a PVDF-TrFE sensor array with multiple active pixels combined with a 3D-printed bionic ear model is prepared, which can accurately detect sounds with different frequencies and locate the sound source from different directions. The PVDF-TrFE sensor array can clearly identify the sound within 25 cm, and the error between the accepted sound frequency and the original input frequency is less than 0.001%. Through the algorithm analysis of the input signal, the location of the sound source can be immediately analyzed. Compared with other acoustic sensors, this sensor has the advantages of being self-powered, small size, and high flexibility, which holds great potential for bionic applications.

Keywords: 3D-printing; PVDF-TrFE; bionic sensor; self-powered; sound locating.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Bionics*
Humans
Polyvinyls*
Printing, Three-Dimensional

Substances

vinylidene fluoride-trifluoroethylene copolymer
Polyvinyls