Abstract
The poor detecting limit and attenuated sensitivity to tiny strain of a strain sensor retard their development toward practical applications ranging from wearable electronics, human healthcare monitoring to smart sensing system. Here, a strain sensor with high sensitivity to tiny strain, high flexibility, fast response and good stability is developed utilizing the micro-cracked metal thin film based on a novel working principle of combining the overlap mode with tunnel effect of the adjacent cracks. Monitoring of human motions and physiological signals as well as anti-interference voice recognition based on the sensor is demonstrated, showing its potential applications in wearable electronics, human healthcare monitoring and smart sensing system.
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