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Highly Stretchable and Transparent Microfluidic Strain Sensors for Monitoring Human Body Motions
journal contribution
posted on 2015-12-16, 00:00 authored by Sun Geun Yoon, Hyung-Jun Koo, Suk Tai ChangWe 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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elastomeric matrixmicrofluidic techniquesfuture stretchablemicrofluidic networksmicrofluidic strain sensors offermicrofluidic strain sensorstrain sensorsTransparent Microfluidic Strain Sensorsmicrofluidic strain sensorsMonitoring Human Body MotionsWe reportnovel microfluidic strain sensors showbody motionssensor performancechannel deformation
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