title: Dramatically Enhanced Mechanosensitivity and Signal-to-Noise Ratio of Nanoscale Crack-Based Sensors: Effect of Crack Depth.
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.
authors.affiliation: School of Chemical Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea.
authors.forename: Byeonghak
authors.initials: B
authors.lastname: Park
authors.affiliation: School of Chemical Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea.
authors.forename: Jisun
authors.initials: J
authors.lastname: Kim
authors.affiliation: Department of Mechanical Engineering, Ajou University, Suwon, 16499, Republic of Korea.
authors.forename: Daeshik
authors.initials: D
authors.lastname: Kang
authors.affiliation: Center for Neuroscience Imaging Research (CNIR), Institute of Basic Science (IBS), Suwon, 16419, Republic of Korea.|Department of Biomedical Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea.
authors.forename: Chanho
authors.initials: C
authors.lastname: Jeong
authors.affiliation: SKKU Advanced Institute of Nanoscience and Technology (SAINT), Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea.
authors.forename: Kwang Su
authors.initials: KS
authors.lastname: Kim
authors.affiliation: School of Chemical Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea.
authors.forename: Jong Uk
authors.initials: JU
authors.lastname: Kim
authors.affiliation: School of Chemical Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea.|SKKU Advanced Institute of Nanoscience and Technology (SAINT), Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea.
authors.forename: Pil J
authors.initials: PJ
authors.lastname: Yoo
authors.affiliation: School of Chemical Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea. taeilkim@skku.edu.|Center for Neuroscience Imaging Research (CNIR), Institute of Basic Science (IBS), Suwon, 16419, Republic of Korea. taeilkim@skku.edu.|Department of Biomedical Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea. taeilkim@skku.edu.
authors.forename: Tae-Il
authors.initials: TI
authors.lastname: Kim
keywords: crack depth; gauge factors; signal-to-noise ratio; strain gauge sensors