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Carbon Nanofiber versus Graphene-Based Stretchable Capacitive Touch Sensors for Artificial Electronic Skin
- Source :
- Cataldi, P, Dussoni, S, Ceseracciu, L, Maggiali, M, Natale, L, Metta, G, Athanassiou, A & Bayer, I S 2017, ' Carbon Nanofiber versus Graphene-Based Stretchable Capacitive Touch Sensors for Artificial Electronic Skin ', Advanced Science . https://doi.org/10.1002/advs.201700587, Advanced Science
- Publication Year :
- 2017
-
Abstract
- Stretchable capacitive devices are instrumental for new‐generation multifunctional haptic technologies particularly suited for soft robotics and electronic skin applications. A majority of elongating soft electronics still rely on silicone for building devices or sensors by multiple‐step replication. In this study, fabrication of a reliable elongating parallel‐plate capacitive touch sensor, using nitrile rubber gloves as templates, is demonstrated. Spray coating both sides of a rubber piece cut out of a glove with a conductive polymer suspension carrying dispersed carbon nanofibers (CnFs) or graphene nanoplatelets (GnPs) is sufficient for making electrodes with low sheet resistance values (≈10 Ω sq−1). The electrodes based on CnFs maintain their conductivity up to 100% elongation whereas the GnPs‐based ones form cracks before 60% elongation. However, both electrodes are reliable under elongation levels associated with human joints motility (≈20%). Strikingly, structural damages due to repeated elongation/recovery cycles could be healed through annealing. Haptic sensing characteristics of a stretchable capacitive device by wrapping it around the fingertip of a robotic hand (ICub) are demonstrated. Tactile forces as low as 0.03 N and as high as 5 N can be easily sensed by the device under elongation or over curvilinear surfaces.
- Subjects :
- Materials science
General Chemical Engineering
Capacitive sensing
Soft robotics
Electronic skin
General Physics and Astronomy
Medicine (miscellaneous)
02 engineering and technology
010402 general chemistry
01 natural sciences
Biochemistry, Genetics and Molecular Biology (miscellaneous)
flexible electronics
law.invention
Natural rubber
law
General Materials Science
Composite material
Sheet resistance
elongating tactile sensors
Full Paper
Carbon nanofiber
Graphene
graphene nanoplatelets
General Engineering
Full Papers
021001 nanoscience & nanotechnology
Flexible electronics
0104 chemical sciences
visual_art
visual_art.visual_art_medium
artificial electronic skin
carbon nanofibers
0210 nano-technology
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Cataldi, P, Dussoni, S, Ceseracciu, L, Maggiali, M, Natale, L, Metta, G, Athanassiou, A & Bayer, I S 2017, ' Carbon Nanofiber versus Graphene-Based Stretchable Capacitive Touch Sensors for Artificial Electronic Skin ', Advanced Science . https://doi.org/10.1002/advs.201700587, Advanced Science
- Accession number :
- edsair.doi.dedup.....87607184b376c264a5d361f7c7aeec6a