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Evaluation of thermal conductivity of single carbon nanotubes in air and liquid using a fluorescence temperature sensor
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10.1063/1.4824757
/content/aip/journal/apl/103/16/10.1063/1.4824757
http://aip.metastore.ingenta.com/content/aip/journal/apl/103/16/10.1063/1.4824757

Figures

Image of FIG. 1.
FIG. 1.

A schematic of the thermal conductivity evaluation method for single carbon nanotubes using a fluorescent temperature sensor and Joule-heating.

Image of FIG. 2.
FIG. 2.

A schematic of the evaluation model used for thermal conductivity of a single CNT (side view).

Image of FIG. 3.
FIG. 3.

The fabrication process of the evaluation model. (a) Spin-coating of SU-8; (b) dispersion of CNT; (c) spin-coating of SU-8 after drying; (d) exposure; (e) development and drying; (f) spatter of Cr/Au; (g) patterning of Cr/Au; and (h) names of each part.

Image of FIG. 4.
FIG. 4.

Photographs of the fabricated evaluation model. (a) Overall view; (b) electrode and gap; (c) CNT connection area; and (d) SEM image.

Image of FIG. 5.
FIG. 5.

Fluorescence images of the micro sensors at each temperature. (a) 30 °C, (b) 34 °C, (c) 38 °C. (d) Calibration result of temperature measurement with sensor fluorescence intensity. (e) Effect of z-position fluctuation on fluorescence intensity at each point.

Image of FIG. 6.
FIG. 6.

Evaluation result of thermal conductivity of a single CNT in air (heating period: t = 40–70 s). (a) Optical image; (b) t = 30 s; (c) t = 50 s; and (d) calculated thermal conductivity.

Image of FIG. 7.
FIG. 7.

Evaluation result of thermal conductivity of a single CNT in water (heating period: t = 40–70 s). (a) Optical image; (b) t = 30 s; (c) t = 50 s; and (d) calculated thermal conductivity.

Tables

Generic image for table
Table I.

Comparison of calculated thermal conductivity in air and in water.

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/content/aip/journal/apl/103/16/10.1063/1.4824757
2013-10-15
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Evaluation of thermal conductivity of single carbon nanotubes in air and liquid using a fluorescence temperature sensor
http://aip.metastore.ingenta.com/content/aip/journal/apl/103/16/10.1063/1.4824757
10.1063/1.4824757
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