Study of Ink Paper Sensor Based on Aluminum/Carbon Nanotubes Agglomerated Nanocomposites

• Type: Article in International Scientific Journal
• Date: 2012

Authors

Marcos A L dos Reis (Author) Other; Augusto F Saraiva (Author) Other; Manuel F G Vieira (Author) FEUP; Jordan Del Nero (Author) Other

Journal

Title: Journal of Nanoscience and Nanotechnology

Vol. 12

Pages: 6955-6960

ISSN: 1533-4880

Publisher: American Scientific Publishers

Indexing

ISI Web of Knowledge - 4 Citations

Scopus - 6 Citations

Scientific classification

FOS: Engineering and technology > Materials engineering

Other information

Authenticus ID: P-002-621

DOI: 10.1166/jnn.2012.6145

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