This research develops a sensor that improves response in polymers, indicating better motion detection capabilities.
Improving the response of sensors is often hindered by inadequate molding effects and complex manufacturing processes. Here, combining a simple magnetic-field-orientation and nano-imprinting process, a micropillar arrayed sensor was successfully fabricated, meanwhile, the boron nitride nanosheets (BNNS) were oriented in the polymer matrix. Due to the strain confinement effect, the outputted voltage of m-BNNS/PDMS composite film (SABNNS) demonstrated an improvement of 115.5% compared to the film sample with randomly dispersed nanoparticles. And the device showed a high sensitivity and rapid response capability to human motion. Furthermore, the oriented arrangement of m-BNNS and the enlarged heat dissipation area of the micropillar array contribute to the optimized thermal conductivity of the device.
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Xin et al. (2024) studied this question.
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