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Rough‐Surface‐Enabled Capacitive Pressure Sensors with 3D Touch Capability
Author(s) -
Lee Kilsoo,
Lee Jaehong,
Kim Gwangmook,
Kim Youngjae,
Kang Subin,
Cho Sungjun,
Kim SeulGee,
Kim JaeKang,
Lee Wooyoung,
Kim DaeEun,
Kang Shinill,
Kim DaeEun,
Lee Taeyoon,
Shim Wooyoung
Publication year - 2017
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201700368
Subject(s) - capacitive sensing , microfabrication , electronics , pressure sensor , realization (probability) , fabrication , computer science , capacitor , process (computing) , surface roughness , materials science , electronic engineering , computer hardware , nanotechnology , electrical engineering , mechanical engineering , voltage , engineering , medicine , statistics , alternative medicine , mathematics , pathology , composite material , operating system
Fabrication strategies that pursue “simplicity” for the production process and “functionality” for a device, in general, are mutually exclusive. Therefore, strategies that are less expensive, less equipment‐intensive, and consequently, more accessible to researchers for the realization of omnipresent electronics are required. Here, this study presents a conceptually different approach that utilizes the inartificial design of the surface roughness of paper to realize a capacitive pressure sensor with high performance compared with sensors produced using costly microfabrication processes. This study utilizes a writing activity with a pencil and paper, which enables the construction of a fundamental capacitor that can be used as a flexible capacitive pressure sensor with high pressure sensitivity and short response time and that it can be inexpensively fabricated over large areas. Furthermore, the paper‐based pressure sensors are integrated into a fully functional 3D touch‐pad device, which is a step toward the realization of omnipresent electronics.