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Dramatically Enhanced Mechanosensitivity and Signal‐to‐Noise Ratio of Nanoscale Crack‐Based Sensors: Effect of Crack Depth
Author(s) -
Park Byeonghak,
Kim Jisun,
Kang Daeshik,
Jeong Chanho,
Kim Kwang Su,
Kim Jong Uk,
Yoo Pil J.,
Kim Taeil
Publication year - 2016
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201602425
Subject(s) - materials science , nanoscopic scale , gauge factor , signal (programming language) , sensitivity (control systems) , noise (video) , signal to noise ratio (imaging) , strain gauge , acoustics , crack closure , composite material , nanotechnology , fracture mechanics , electronic engineering , computer science , telecommunications , artificial intelligence , engineering , medicine , alternative medicine , physics , pathology , fabrication , image (mathematics) , programming language
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.