Investigations on printed elastic resistors containing carbon nanotubes
Marcin Słoma , Małgorzata Jakubowska , Andrzej Kolek , Krzysztof Mleczko , Piotr Ptak , Adam Stadler , Zbigniew Zawiślak , Anna Młożniak
AbstractThis paper presents the results of authors investigations on elaboration of a new thick film composition filled with carbon nanotubes (CNTs). The polymer composition consists of polymer vehicle, which is the solution of organic resin in certain combination of solvents, and functional phase—carbon nanotubes well dispersed in the vehicle. The pastes were applied with screen-printing on several substrates and temperature cured. The properties of obtained layers were characterized. Series of samples were prepared with different amount of CNTs to evaluate electrical properties. Changes in resistance were investigated during periodic mechanical and temperature stresses, realized through cyclical bending and rapid temperature change. Tensometric effect was also investigated. Investigations have proved that polymer composites based on carbon nanotubes exhibit high resilience to stress factors. Resistance change in function of temperature was also investigated to evaluate temperature coefficient of resistance (TCR). All this aspects are important for elastic resistors fabrication in printed electronics microcircuits. Resistance and noise measurements in cryostats have also been involved. 1/f type noise has been observed. Noise intensity, calculated in decade frequency bands, rises significantly with increasing temperature. Activation energies of thermally activated noise sources (TANS) have been revealed using low-frequency noise spectroscopy. Relatively large value of negative TCR has been obtained from resistance versus temperature curve. Calculated dimensionless sensitivity is similar to that observed in cryogenic temperature sensors. However, bulk noise intensity of resistive layer is larger than obtained for lead containing RuO2 based resistive layers.
|Journal series||Journal of Materials Science-Materials in Electronics, ISSN 0957-4522, (A 25 pkt)|
|Keywords in English||Characterization and Evaluation of Materials, Optical and Electronic Materials|
|ASJC Classification||; ; ;|
|Publication indicators||= 13; = 11; = 12.0; : 2011 = 0.872; : 2011 = 1.076 (2) - 2011=1.023 (5)|
|Citation count*||12 (2016-09-01)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.