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Application of electrodeposited piezo‐resistive polypyrrole for a pressure‐sensitive bruxism sensor
Author(s) -
Akkermans Onno,
Spronck Mitch,
Kluskens Theo,
Offerein Fred,
Saralidze Ketie,
Aarts Jos,
Keshaniyan Pegah,
Steen Redeker Erik,
Diliën Hanne,
van Grinsven Bart,
Cleij Thomas J.
Publication year - 2016
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201532793
Subject(s) - polypyrrole , materials science , dopant , scanning electron microscope , composite material , conductive polymer , polymerization , polymer , resistive touchscreen , pressure sensor , nanotechnology , optoelectronics , doping , electrical engineering , physics , thermodynamics , engineering
This paper presents the application of the conducting polymer polypyrrole in a pressure sensitive sensor. Polypyrrole was electrodeposited on copper plates using phytic acid as a dopant and cross‐linker. A combination of different polymerization durations and potentials were tested to find the polymerization conditions for thin polymer layers and homogenous surface coverage. The morphology of the surface of the polypyrrole films was examined with scanning electron microscopy to study the formation of hollow sphere beads. The polymer layers were sandwiched between two copper sheets to create pressure sensitive sensors and the piezo‐resistive effect was tested. For this, increasing forces were applied to the sensors and the resistance was measured. It was found that the polypyrrole layers were pressure sensitive to pressures relevant for bruxism events and had a thickness that is suitable for application in a splint for the detection of awake bruxism. An SEM image of polypyrrole hollow sphere beads at 20 kV and 1000× magnification.