Wearable, Ultrawide-Range, and Bending-Insensitive Pressure Sensor Based on Carbon Nanotube Network-Coated Porous Elastomer Sponges for Human Interface and Healthcare Devices
| Autor: | Yong Suk Oh, Inkyu Park, Tae-Ik Lee, Taek-Soo Kim, Yongrok Jeong, Min Seong Kim, Seung-Hwan Kim, Kyuyoung Kim, Donguk Kwon, Morteza Amjadi |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Electronic skin Wearable computer Nanotechnology 02 engineering and technology Bending Carbon nanotube Biosensing Techniques 010402 general chemistry Elastomer 01 natural sciences law.invention Wearable Electronic Devices law Pressure Humans General Materials Science Porosity Nanotubes Carbon Electric Conductivity 021001 nanoscience & nanotechnology Pressure sensor 0104 chemical sciences Human interface device Elastomers 0210 nano-technology |
| Zdroj: | ACS applied materialsinterfaces. 11(26) |
| ISSN: | 1944-8252 |
| Popis: | Flexible and wearable pressure sensors have attracted a tremendous amount of attention due to their wider applications in human interfaces and healthcare monitoring. However, achieving accurate pressure detection and stability against external stimuli (in particular, bending deformation) over a wide range of pressures from tactile to body weight levels is a great challenge. Here, we introduce an ultrawide-range, bending-insensitive, and flexible pressure sensor based on a carbon nanotube (CNT) network-coated thin porous elastomer sponge for use in human interface devices. The integration of the CNT networks into three-dimensional microporous elastomers provides high deformability and a large change in contact between the conductive CNT networks due to the presence of micropores, thereby improving the sensitivity compared with that obtained using CNT-embedded solid elastomers. As electrical pathways are continuously generated up to high compressive strain (∼80%), the pressure sensor shows an ultrawide pressure sensing range (10 Pa to 1.2 MPa) while maintaining favorable sensitivity (0.01-0.02 kPa |
| Databáze: | OpenAIRE |
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