Study of Ink Paper Sensor Based on Aluminum/Carbon Nanotubes Agglomerated Nanocomposites
Type
Article in International Scientific Journal
Year
2012
Authors
Marcos A L dos Reis
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Augusto F Saraiva
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Abstract (EN):
Agglomerated nanocomposites based on Aluminum/Carbon Nanotubes (Al/CNT) were produced by an arc discharge technique under argon/acetone atmosphere and ultrasonically dispersed in distilled water to form an ink-like composite. This ink was spread onto commercial paper to produce a conductive thick film. Experimental results show that the electrical resistance of Al/CNT nanocomposite on paper changes when a mechanical stress and/or heat is applied. The multi-sensory properties obtained are the following: (i) piezoresistive effect, electrical resistance shows linear dependence with pressure intensity at room temperature; (ii) polynomial relationship between electrical resistance and temperature; and (iii) high accuracy thermal sensor compared to a K type thermocouple at 25 degrees C. The nanocomposite and paper morphology was analyzed by Scanning Electron Microscopy with Energy Dispersive Spectrometry (SEM/EDS) and a favorable surface for physisorption was observed. Transmission Electron Microscopy (TEM) was utilized for Al/CNT agglomerated indicating that the ink paper based on nanocomposite shows good performance as a thermo-piezoresistive sensor.
Language:
English
Type (Professor's evaluation):
Scientific
No. of pages:
6
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