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Paper-based Touch Sensor with Embedded Micro-Probe Array Fabricated by Double-sided Laser Printing

Abstract

Touch sensor is one key component for human interfacing devices. However, although various touch sensors have been demonstrated, their sophisticated fabrication process and complicated structure make them expensive and delicate, thus they are not considered to be practical for wide applications in daily life. Here we present a low-cost and scalable paper-based touch sensor suitable for practical applications. The sensor is based on a novel structure of embedding silver nanowire micro-probe arrays in the paper substrate, which owns high sensitivity to multiple touch inputs and compact structure with a total thickness of ca. 100 μm. The silver nanowire electrodes on double sides are manufactured at the same time by an original double-sided laser printing technique. Since it is mask-free, solvent-free and high efficient, this technique is quite suitable for paper substrates that cannot endure solvent process. Sensing properties of the sensor in various extreme situations are examined and spatial distributions of touch pressure are detected by arranging the sensing units in arrays. Demonstrating examples of touch sensor and pressure mapping are presented and finally a successful application of the sensor array in an electronic lock system is shown to further illustrate its applicability.

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Publication details

The article was received on 07 Apr 2017, accepted on 02 Jun 2017 and first published on 06 Jun 2017


Article type: Paper
DOI: 10.1039/C7NR02469J
Citation: Nanoscale, 2017, Accepted Manuscript
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    Paper-based Touch Sensor with Embedded Micro-Probe Array Fabricated by Double-sided Laser Printing

    G. Huang, N. Li, H. Xiao, Q. Feng and S. Fu, Nanoscale, 2017, Accepted Manuscript , DOI: 10.1039/C7NR02469J

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