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Highly sensitive and flexible wearable pressure sensor with dielectric elastomer and carbon nanotube electrodes
- Source :
- Sensors and Actuators A: Physical. 305:111941
- Publication Year :
- 2020
- Publisher :
- Elsevier BV, 2020.
-
Abstract
- Wearable sensors for tracking human body motion are being increasingly applied in medical systems and are considered important components of human–machine interfaces. This study proposes a flexible sandwich-like capacitive pressure sensor that consists of carbon nanotube–polydimethylsiloxane (CNT–PDMS) composite electrodes and a porous polymer dielectric layer. CNT yarn and polymer materials help fabricate a pressure sensor without complex patterns, easily and quickly. The dielectric layer is made of a porous polymer to improve the sensor sensitivity. The high porosity of the dielectric layer increases its deformation under pressure and enhances the sensitivity (to approximately 5.6 kPa−1 (%)) even under low pressures ( Owing to the high porosity of the dielectric layer and flexibility of the CNT yarn, the capacitive pressure sensor proposed in this study exhibits good performance in detecting even a slight change in stimulus. The proposed pressure sensor can be applied in wearable applications such as human-friendly interfaces and sensitive electronic skins.
- Subjects :
- Materials science
Composite number
02 engineering and technology
Carbon nanotube
Dielectric
Elastomer
01 natural sciences
law.invention
law
0103 physical sciences
Electrical and Electronic Engineering
Composite material
Porosity
Instrumentation
010302 applied physics
chemistry.chemical_classification
Metals and Alloys
Polymer
021001 nanoscience & nanotechnology
Condensed Matter Physics
Pressure sensor
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
chemistry
Electrode
0210 nano-technology
Subjects
Details
- ISSN :
- 09244247
- Volume :
- 305
- Database :
- OpenAIRE
- Journal :
- Sensors and Actuators A: Physical
- Accession number :
- edsair.doi...........2c6166ff61caea969df63ad5c5e81be6