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Micropatterned P(VDF‐TrFE) Film‐Based Piezoelectric Nanogenerators for Highly Sensitive Self‐Powered Pressure Sensors
Author(s) -
Lee JuHyuck,
Yoon HongJoon,
Kim Tae Yun,
Gupta Manoj Kumar,
Lee Jeong Hwan,
Seung Wanchul,
Ryu Hanjun,
Kim SangWoo
Publication year - 2015
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201500856
Subject(s) - materials science , multiphysics , micropatterning , piezoelectricity , pressure sensor , mechanical energy , composite material , energy harvesting , optoelectronics , polymer , nanotechnology , power (physics) , mechanical engineering , finite element method , physics , quantum mechanics , engineering , thermodynamics
Here micropatterned poly(vinylidenefluoride‐ co ‐trifluoroethylene) (P(VDF‐TrFE)) films‐based piezoelectric nanogenerators (PNGs) with high power‐generating performance for highly sensitive self‐powered pressure sensors are demonstrated. The microstructured P(VDF‐TrFE)‐based PNGs reveal nearly five times larger power output compared to a flat film‐based PNG. The micropatterning of P(VDF‐TrFE) polymer makes itself ultrasensitive in response to mechanical deformation. The application is demonstrated successfully as self‐powered pressure sensors in which mechanical energy comes from water droplet and wind. The mechanism of the high performance is intensively discussed and illustrated in terms of strain developed in the flat and micropatterned P(VDF‐TrFE) films. The impact derived from the patterning on the output performance is studied in term of effective pressure using COMSOL multiphysics software.