Highly Stretchable and Transparent Microfluidic Strain Sensors for Monitoring Human Body Motions
- Authors
- Yoon, Sun Geun; Koo, Hyung-Jun; Chang, Suk Tai
- Issue Date
- Dec-2015
- Publisher
- AMER CHEMICAL SOC
- Keywords
- microfluidics; transparent strain sensors; ionic liquids; stretchable devices; human motion monitoring
- Citation
- ACS APPLIED MATERIALS & INTERFACES, v.7, no.49, pp 27562 - 27570
- Pages
- 9
- Journal Title
- ACS APPLIED MATERIALS & INTERFACES
- Volume
- 7
- Number
- 49
- Start Page
- 27562
- End Page
- 27570
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/8811
- DOI
- 10.1021/acsami.5b08404
- ISSN
- 1944-8244
1944-8252
- Abstract
- We report a new class of simple microfluidic strain sensors with high stretchability, transparency, sensitivity, and long-term stability with no considerable hysteresis and a fast response to various deformations by combining the merits of microfluidic techniques and ionic liquids. The high optical transparency of the strain sensors was achieved by introducing refractive-index matched ionic liquids into microfluidic networks or channels embedded in an elastomeric matrix. The microfluidic strain sensors offer the outstanding sensor performance under a variety of deformations induced by stretching, bending, pressing, and twisting of the microfluidic strain sensors. The principle of our microfluidic strain sensor is explained by a theoretical model based on the elastic channel deformation. In order to demonstrate its capability of practical usage, the simple-structured microfluidic strain sensors were performed Onto a finger, wrist, and arm. The highly stretchable and transparent microfluidic strain sensors were successfully applied as potential platforms for distinctively monitoring a wide range of human body motions in real time. Our novel microfluidic strain sensors show great promise for making future stretchable electronic devices.
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Collections - College of Engineering > School of Chemical Engineering and Material Science > 1. Journal Articles
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