Issue 8, 2022

Configurable direction sensitivity of skin-mounted microfluidic strain sensor with auxetic metamaterial

Abstract

Electromechanical coupling plays a key role in determining the performance of stretchable strain sensor. Current regulation of the electromechanical coupling in stretchable strain sensor is largely restricted by the intrinsic mechanical properties of the device. In this study, a microfluidic strain sensor based on the core–shell package design with the auxetic metamaterial (AM) is presented. By overriding the mechanical properties of the device, the AM in the package effectively tunes the deformation of the microfluidic channel with the applied strain and configures the directional strain sensitivity with a large modulation range. The gauge factor (GF) of the strain sensor in the radial direction of the channel can be gradually shifted from the intrinsically negative value to a positive one by adopting the AMs with different designs. By simply replacing the AM in the package, the microfluidic strain sensor with the core–shell package can be configurated as an omnidirectional or directional stretchable strain sensor. With the directional sensitivity brought by the rational AM design, the application of the AM-integrated strain sensor in the skin-mounted tactile detection is demonstrated with high tolerance to unintended wrist movements.

Graphical abstract: Configurable direction sensitivity of skin-mounted microfluidic strain sensor with auxetic metamaterial

Supplementary files

Article information

Article type
Paper
Submitted
14 févr. 2022
Accepted
21 mars 2022
First published
21 mars 2022

Lab Chip, 2022,22, 1630-1639

Configurable direction sensitivity of skin-mounted microfluidic strain sensor with auxetic metamaterial

L. Mao, T. Pan, Y. Ke, Z. Yan, S. Huang, D. Guo, N. Gao, W. Huang, G. Yao, M. Gao and Y. Lin, Lab Chip, 2022, 22, 1630 DOI: 10.1039/D2LC00141A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements