Dramatically Enhanced Mechanosensitivity and Signal-to-Noise Ratio of Nanoscale Crack-Based Sensors: Effect of Crack Depth.

Park, Byeonghak; Kim, Jisun; Kang, Daeshik; Jeong, Chanho; Kim, Kwang Su; Kim, Jong Uk; Yoo, Pil J; Kim, Tae-Il · Adv Mater · 2016

basic_science · Level V

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Abstract

The sensitivity of a nanoscale crack-based sensor is enhanced markedly by modulating the crack depth. The crack-depth-propagated sensor exhibits ≈16 000 gauge factor at 2% strain and a superior signal-to-noise ratio of ≈35, which facilitates detection of target signals for voice-pattern recognition.