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Retracted: Development of a Highly Sensitive Wearable Tactile Sensor on Fabric by Using Conductive Inks Based on Electrical Contact Resistance (ECR) Change Mechanism
Author(s) -
Chen WeiLin,
Karmakar Rajat Subhra,
Liao YingChih,
Lu YenWen
Publication year - 2021
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.202100130
Subject(s) - materials science , wearable computer , electrical conductor , microscale chemistry , contact resistance , electrical contacts , tactile sensor , wearable technology , nanotechnology , screen printing , pillar , graphene , electrical resistance and conductance , optoelectronics , sensitivity (control systems) , composite material , computer science , electronic engineering , mechanical engineering , layer (electronics) , embedded system , artificial intelligence , robot , mathematics education , mathematics , engineering
Abstract A wearable tactile device, based on the electrical contact resistance (ECR) between the two fabric substrates, is developed in this work for continuous health monitoring. Microscale pillar structures are formed over top and bottom fabric substrates by screen‐printing technique with conductive inks followed by the face‐to‐face assembly of top and bottom parts. The contact areas between the substrates increase after the application of an external force, resulting the increment of charge carrier conduction and reduction in ECR value. To enhance the sensitivity, the device is optimized with two different conductive inks (i.e., silver and graphene inks) to create pillar shaped microstructures resulting a higher sensitivity due to the variation in ECR. This wearable tactile sensor's practical applications also are investigated in monitoring human wrist pulses with wireless module and smartphone, showing its capability in faster response and high sensitivity for internet‐of‐thing and medical applications.