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Design and fabrication of single-walled carbon nanonet flexible strain sensors.

Huang YT, Huang SC, Hsu CC, Chao RM, Vu TK - Sensors (Basel) (2012)

Bottom Line: All of the micro-fabrication was compatible with the standard IC process.Experimental results indicated that the gauge factor of the proposed strain sensor was larger than 4.5, approximately 2.0 times greater than those of commercial gauges.The results also demonstrated that the gauge factor is small when the growth time of SWCNNs is lengthier, and the gauge factor is large when the line width of the serpentine pattern of SWCNNs is small.

View Article: PubMed Central - PubMed

Affiliation: Department of Mechanical Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung 80778, Taiwan. yating3133@yahoo.com.tw

ABSTRACT
This study presents a novel flexible strain sensor for real-time strain sensing. The material for strain sensing is single-walled carbon nanonets, grown using the alcohol catalytic chemical vapor deposition method, that were encapsulated between two layers of Parylene-C, with a polyimide layer as the sensing surface. All of the micro-fabrication was compatible with the standard IC process. Experimental results indicated that the gauge factor of the proposed strain sensor was larger than 4.5, approximately 2.0 times greater than those of commercial gauges. The results also demonstrated that the gauge factor is small when the growth time of SWCNNs is lengthier, and the gauge factor is large when the line width of the serpentine pattern of SWCNNs is small.

No MeSH data available.


Related in: MedlinePlus

The strain sensitivities of the SWCNN strain sensor (growth time of 10 min, sample 2).
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f9-sensors-12-03269: The strain sensitivities of the SWCNN strain sensor (growth time of 10 min, sample 2).

Mentions: Figures 9 and 10 show the experimental results for the tensile test of the Parylene-based SWCNN strain sensors. Nine strain sensors with various lengths were obtained. The relative changes of the resistance of the strain sensors were increased when tension loading was applied. The gauge factor was calculated from the graph by the following equation:(1)ΔR/R=G×εwhere ΔR/R is the relative change in resistance, and ε is the strain measured by the strain gauge. G is the gauge factor of the SWCNNs strain sensors. The average gauge factor of the SWCNN strain sensors was 5.05. The gauge factors were higher than those of the commercial metallic foil strain gauge (the GF of the metal foil gauge is 2.1).


Design and fabrication of single-walled carbon nanonet flexible strain sensors.

Huang YT, Huang SC, Hsu CC, Chao RM, Vu TK - Sensors (Basel) (2012)

The strain sensitivities of the SWCNN strain sensor (growth time of 10 min, sample 2).
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3376622&req=5

f9-sensors-12-03269: The strain sensitivities of the SWCNN strain sensor (growth time of 10 min, sample 2).
Mentions: Figures 9 and 10 show the experimental results for the tensile test of the Parylene-based SWCNN strain sensors. Nine strain sensors with various lengths were obtained. The relative changes of the resistance of the strain sensors were increased when tension loading was applied. The gauge factor was calculated from the graph by the following equation:(1)ΔR/R=G×εwhere ΔR/R is the relative change in resistance, and ε is the strain measured by the strain gauge. G is the gauge factor of the SWCNNs strain sensors. The average gauge factor of the SWCNN strain sensors was 5.05. The gauge factors were higher than those of the commercial metallic foil strain gauge (the GF of the metal foil gauge is 2.1).

Bottom Line: All of the micro-fabrication was compatible with the standard IC process.Experimental results indicated that the gauge factor of the proposed strain sensor was larger than 4.5, approximately 2.0 times greater than those of commercial gauges.The results also demonstrated that the gauge factor is small when the growth time of SWCNNs is lengthier, and the gauge factor is large when the line width of the serpentine pattern of SWCNNs is small.

View Article: PubMed Central - PubMed

Affiliation: Department of Mechanical Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung 80778, Taiwan. yating3133@yahoo.com.tw

ABSTRACT
This study presents a novel flexible strain sensor for real-time strain sensing. The material for strain sensing is single-walled carbon nanonets, grown using the alcohol catalytic chemical vapor deposition method, that were encapsulated between two layers of Parylene-C, with a polyimide layer as the sensing surface. All of the micro-fabrication was compatible with the standard IC process. Experimental results indicated that the gauge factor of the proposed strain sensor was larger than 4.5, approximately 2.0 times greater than those of commercial gauges. The results also demonstrated that the gauge factor is small when the growth time of SWCNNs is lengthier, and the gauge factor is large when the line width of the serpentine pattern of SWCNNs is small.

No MeSH data available.


Related in: MedlinePlus