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A multi-component nanocomposite screen-printed ink with non-linear touch sensitive electrical conductivity.

Webb, Alexander J. and Szablewski, Marek and Bloor, David and Atkinson, Del and Graham, Adam and Laughlin, Paul and Lussey, David (2013) 'A multi-component nanocomposite screen-printed ink with non-linear touch sensitive electrical conductivity.', Nanotechnology., 24 (16). p. 165501.

Abstract

Printable electronics is an innovative area of technology with great commercial potential. Here, a screen-printed functional ink, comprising a combination of semiconducting acicular particles, electrically insulating nanoparticles and a base polymer ink, is described that exhibits pronounced pressure sensitive electrical properties for applications in sensing and touch sensitive surfaces. The combination of these components in the as-printed ink yield a complex structure and a large and reproducible touch pressure sensitive resistance range. In contrast to the case for some composite systems, the resistance changes occur down to applied pressures of 13 Pa. Current–voltage measurements at fixed pressures show monotonic non-linear behaviour, which becomes more Ohmic at higher pressures and in all cases shows some hysteresis. The physical basis for conduction, particularly in the low pressure regime, can be described in terms of field assisted quantum mechanical tunnelling.

Item Type:Article
Full text:(AM) Accepted Manuscript
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Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1088/0957-4484/24/16/165501
Publisher statement:Copyright notice. This is an author-created, un-copyedited version of an article accepted for publication in Nanotechnology. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://dx.doi.org/10.1088/0957-4484/24/16/165501.
Date accepted:No date available
Date deposited:18 June 2014
Date of first online publication:April 2013
Date first made open access:No date available

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