Displacement sensing with quasi-zero stiffness structure and flexoelectricity

Flexoelectricity is a strain-gradient-induced electromechanical coupling effect promising for high-resolution sensing. A novel displacement sensing method is developed based on long-range quasi-zero stiffness and flexoelectricity. The structure of curved beams is geometrically designed by optimizing...

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Bibliographic Details
Published in:Smart materials and structures 2023-03, Vol.32 (3), p.35024
Main Authors: Gu, Haoyu, Ji, Hui, Zhang, Shuwen, Zhai, Chongpu, Xu, Minglong
Format: Article
Language:English
Subjects:
displacement sensing
flexoelectricity
quasi-zero stiffness
structure design
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Summary:Flexoelectricity is a strain-gradient-induced electromechanical coupling effect promising for high-resolution sensing. A novel displacement sensing method is developed based on long-range quasi-zero stiffness and flexoelectricity. The structure of curved beams is geometrically designed by optimizing the mechanical and flexoelectric responses. For the optimal configuration, the predicted load-displacement properties and flexoelectric polarization obtained based on finite element analyses agree well with experimental observations. Within the quasi-zero stiffness range, the exported flexoelectric charge shows significant linearity to structure deformation. This study contributes a novel approach for displacement sensing with the combination of quasi-zero stiffness and flexoelectricity, providing insights into applications of flexoelectricity in functional materials and structures.
ISSN:0964-1726
1361-665X
DOI:10.1088/1361-665X/acb747