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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

Therelationship of line width and gauge factor.
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f12-sensors-12-03269: Therelationship of line width and gauge factor.

Mentions: The line width effect on the gauge factor is shown in Figure 12. As shown, under the same number, the small line width has a large gauge factor. The difference in the number width and the gauge factor curve is smaller when the growth time is 20 min. This indicates that the higher the density of the single-walled carbon nanonet, the length change from the number has a smaller effect on the relation curve difference between line width and gauge factor. Figure 13 shows the relationship of resistance and gauge factor. As seen resistance and gauge factor are positively correlated. The electronic conductive path decrease as the network density decreases, resulting in an increase in resistance. Also, when the device is during a tension loading, the sparse network became more sparse, that resulting in an increase in gauge factor. Under the same line width and bar number, the large resistance indicates that the density of the single-walled carbon nanonet is low.


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

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

Therelationship of line width and gauge factor.
© Copyright Policy
Related In: Results  -  Collection

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

f12-sensors-12-03269: Therelationship of line width and gauge factor.
Mentions: The line width effect on the gauge factor is shown in Figure 12. As shown, under the same number, the small line width has a large gauge factor. The difference in the number width and the gauge factor curve is smaller when the growth time is 20 min. This indicates that the higher the density of the single-walled carbon nanonet, the length change from the number has a smaller effect on the relation curve difference between line width and gauge factor. Figure 13 shows the relationship of resistance and gauge factor. As seen resistance and gauge factor are positively correlated. The electronic conductive path decrease as the network density decreases, resulting in an increase in resistance. Also, when the device is during a tension loading, the sparse network became more sparse, that resulting in an increase in gauge factor. Under the same line width and bar number, the large resistance indicates that the density of the single-walled carbon nanonet is low.

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