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Strain Sensing Characteristics of Rubbery Carbon Nanotube Composite for Flexible Sensors

Title
Strain Sensing Characteristics of Rubbery Carbon Nanotube Composite for Flexible Sensors
Author
김현우
Keywords
Flexible Sensor; Piezoresistive Sensor; Carbon Nanotubes; Rubbery Nanocomposite
Issue Date
2016-02
Publisher
AMER SCIENTIFIC PUBLISHERS
Citation
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v. 16, NO 2, Page. 1607-1611
Abstract
In this study, the piezoresistive properties of CNT (Carbon Nanotube)/EPDM composite are characterized for the applications of a flexible sensor. The CNT/EPDM composites were prepared by using a Brabender mixer with MWCNT (Multi-walled Carbon Nanotube) and organo-clay. The static and quasi-dynamic voltage output responses of the composite sensor were also experimentally studied and were compared with those of a conventional foil strain gage. The voltage output by using a signal processing system was fairly stable and it shows somehow linear responses at both of loading and unloading cases with hysteresis. The voltage output was distorted under a quasi-dynamic test due to its unsymmetrical piezoresistive characteristics. The CNT/EPDM sensor showed quite tardy response to its settling time test under static deflections and that would be a hurdle for its real time applications. Furthermore, since the CNT/EPDM sensor does not have directional voltage output to tension and compression, it only could be utilized as a mono-directional force sensor such as a compressive touch sensor.
URI
http://www.ingentaconnect.com/content/asp/jnn/2016/00000016/00000002/art00059;jsessionid=36v17s67e5gde.x-ic-live-01http://hdl.handle.net/20.500.11754/31928
ISSN
1533-4880; 1533-4899
DOI
10.1166/jnn.2016.11978
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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