| 초록 |
Recently, ultrasesitive nanoscale crack based mechanosensor inspired by spider's sensory organ is presented. [1] The sensors are sensitive to strain and vibration with the ability to detect amplitude of apporximately 10nm scale. It is attributed to the disconnection-reconnection undergone by zip-like nanoscale crack interfaces under tiny stiumulations. However, among many geometrical parameters of the cracks, crack depth is considered as a key factor to improve sensor's performance. In this presentation, we present improved performance of the nanoscale crack-based sensors by modulation of nanoscale crack geometry. By understanding of the key issue, we develop the sensor has superior sensing capability with a gauge factor over 15,000 in the 0-2% in strain range. We also demonstrate the sensors are applicable to wearable electronics. [1] D. Kang et al., "Ultrasensitive mechanical crack based sensor inspired by the spider sensory system" Nature 516.7530 (2014): 222-226 |
