“Because the design is so simple, there are so many different ways to customize the sensor, depending on the application,” said Yecheng Wang, a postdoctoral fellow at SEAS and first author of the paper. “You can choose different materials, arranged in different ways and optimized for different tasks.”
By arranging the electrolyte, dielectric, and electrode in different configurations, the researchers developed four designs for the temperature sensor. In one test, they integrated the sensor into a soft gripper and measured the temperature of a hot hard boiled egg. The sensors are more sensitive than traditional thermoelectric thermometers and can respond to changes in temperature within about 10 milliseconds.
“We demonstrated that these sensors can be made small, stable, and even transparent,” said Wang.
Depending on the materials used, the thermometer can measure temperatures upwards of 200 degrees Celsius or as cold as -100 degrees Celsius.
“This highly customizable platform could usher in new developments to enable and improve the internet of everything and everyone,” said Suo.
The research was co-authored by Kun Jia, Shuwen Zhang, Hyeong Jun Kim, Yang Bai and Ryan C. Hayward. The research was supported in part by the National Science Foundation through the Harvard University Materials Research Science and Engineering Center under grant DMR2011754.
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January 20, 2022 at 07:00PM
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A soft, stretchable thermometer - Harvard School of Engineering and Applied Sciences
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