Stretchable and Flexible High-Strain Sensors Made Using Carbon Nanotubes and Graphite Films on Natural Rubber
Conventional metallic strain sensors are flexible, but they can sustain maximum strains of only ~5%, so there is a need for sensors that can bear high strains for multifunctional applications. In this study, we report stretchable and flexible high-strain sensors that consist of entangled and randoml...
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| Format: | Article |
| Language: | English |
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MDPI AG
2014-01-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1424-8220/14/1/868 |
| _version_ | 1798041496460460032 |
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| author | Sreenivasulu Tadakaluru Wiradej Thongsuwan Pisith Singjai |
| author_facet | Sreenivasulu Tadakaluru Wiradej Thongsuwan Pisith Singjai |
| author_sort | Sreenivasulu Tadakaluru |
| collection | DOAJ |
| description | Conventional metallic strain sensors are flexible, but they can sustain maximum strains of only ~5%, so there is a need for sensors that can bear high strains for multifunctional applications. In this study, we report stretchable and flexible high-strain sensors that consist of entangled and randomly distributed multiwall carbon nanotubes or graphite flakes on a natural rubber substrate. Carbon nanotubes/graphite flakes were sandwiched in natural rubber to produce these high-strain sensors. Using field emission scanning electron microscopy, the morphology of the films for both the carbon nanotube and graphite sensors were assessed under different strain conditions (0% and 400% strain). As the strain was increased, the films fractured, resulting in an increase in the electrical resistance of the sensor; this change was reversible. Strains of up to 246% (graphite sensor) and 620% (carbon nanotube sensor) were measured; these values are respectively ~50 and ~120 times greater than those of conventional metallic strain sensors. |
| first_indexed | 2024-04-11T22:22:20Z |
| format | Article |
| id | doaj.art-eb1dafee87194be288d6ba64f34c81dc |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T22:22:20Z |
| publishDate | 2014-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-eb1dafee87194be288d6ba64f34c81dc2022-12-22T04:00:05ZengMDPI AGSensors1424-82202014-01-0114186887610.3390/s140100868s140100868Stretchable and Flexible High-Strain Sensors Made Using Carbon Nanotubes and Graphite Films on Natural RubberSreenivasulu Tadakaluru0Wiradej Thongsuwan1Pisith Singjai2Materials Science Research Center, Department of Physics and Materials Science, Faculty of Science, Chiangmai University, Chiangmai 50200, ThailandMaterials Science Research Center, Department of Physics and Materials Science, Faculty of Science, Chiangmai University, Chiangmai 50200, ThailandMaterials Science Research Center, Department of Physics and Materials Science, Faculty of Science, Chiangmai University, Chiangmai 50200, ThailandConventional metallic strain sensors are flexible, but they can sustain maximum strains of only ~5%, so there is a need for sensors that can bear high strains for multifunctional applications. In this study, we report stretchable and flexible high-strain sensors that consist of entangled and randomly distributed multiwall carbon nanotubes or graphite flakes on a natural rubber substrate. Carbon nanotubes/graphite flakes were sandwiched in natural rubber to produce these high-strain sensors. Using field emission scanning electron microscopy, the morphology of the films for both the carbon nanotube and graphite sensors were assessed under different strain conditions (0% and 400% strain). As the strain was increased, the films fractured, resulting in an increase in the electrical resistance of the sensor; this change was reversible. Strains of up to 246% (graphite sensor) and 620% (carbon nanotube sensor) were measured; these values are respectively ~50 and ~120 times greater than those of conventional metallic strain sensors.http://www.mdpi.com/1424-8220/14/1/868piezoresistive sensorsoft wearable sensorselectro-mechanical propertiesfilm compositestretchable devicecarbon nanotubeshealth monitoring |
| spellingShingle | Sreenivasulu Tadakaluru Wiradej Thongsuwan Pisith Singjai Stretchable and Flexible High-Strain Sensors Made Using Carbon Nanotubes and Graphite Films on Natural Rubber Sensors piezoresistive sensor soft wearable sensors electro-mechanical properties film composite stretchable device carbon nanotubes health monitoring |
| title | Stretchable and Flexible High-Strain Sensors Made Using Carbon Nanotubes and Graphite Films on Natural Rubber |
| title_full | Stretchable and Flexible High-Strain Sensors Made Using Carbon Nanotubes and Graphite Films on Natural Rubber |
| title_fullStr | Stretchable and Flexible High-Strain Sensors Made Using Carbon Nanotubes and Graphite Films on Natural Rubber |
| title_full_unstemmed | Stretchable and Flexible High-Strain Sensors Made Using Carbon Nanotubes and Graphite Films on Natural Rubber |
| title_short | Stretchable and Flexible High-Strain Sensors Made Using Carbon Nanotubes and Graphite Films on Natural Rubber |
| title_sort | stretchable and flexible high strain sensors made using carbon nanotubes and graphite films on natural rubber |
| topic | piezoresistive sensor soft wearable sensors electro-mechanical properties film composite stretchable device carbon nanotubes health monitoring |
| url | http://www.mdpi.com/1424-8220/14/1/868 |
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