期刊
ACS SENSORS
卷 8, 期 10, 页码 3804-3811出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssensors.3c01253
关键词
portable; cost-effective; flexible; motor speed monitoring; electrochemical sensor
Understanding the speed of micromotors is essential for their practical applications. Current analysis methods rely on expensive optical microscopes, which are limited to laboratory settings. In this study, a lightweight, portable, and low-cost micromotor sensor was developed using water-sensitive materials. The sensor allows real-time monitoring of micromotor speed in various settings with high accuracy.
Autonomous movement promotes practical applications of micromotors. Understanding the moving speeds is a crucial step in micromotor studies. The current analysis method relies on an expensive optical microscope, which is limited to laboratory settings. Herein, we have developed a lightweight (0.15 g), portable (2.0 x 3.5 cm(2)), and low-cost (approximately $0.26) micromotor sensor (mu-Motor sensor), composed of water-sensitive materials for micromotor speed monitoring. Moving micromotors induce fluid flow, enhancing the evaporation rate of the liquid medium. Consequently, a high correlation between motor speed and water molecule concentration above the moving medium has been established. The mu-Motor sensor enables a real-time readout of the moving speed in various settings, with high accuracy (>= 95% in the lab and >= 90% in field studies at a local beach). The mu-Motor sensor opens up a new way for detecting micro/nanomachine movements, illuminating future applications of micro/nanorobotics for diverse scenarios.
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