Marked object recognition multitouch screen printed touchpad for interactive applications

The market for interactive platforms is rapidly growing, and touchscreens have been incorporated in an increasing number of devices. Thus, the area of smart objects and devices is strongly increasing by adding interactive touch and multimedia content, leading to new uses and capabilities. In this wo...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2017-12, Vol.17 (12), p.2786
Main Authors: Nunes, Jivago Serrado Gomes Aguiar, Castro, Nelson, Gonçalves, Sérgio, Pereira, Nélson, Correia, Vítor Manuel Gomes, Lanceros-Méndez, S.
Format: Article
Language:English
Subjects:
Ciências Físicas
Ciências Naturais
Diamonds
Flexible sensors
Object recognition
Polyethylene terephthalate
Printable sensors
Science & Technology
Tactile data processing
Touch control panels
Touch sensors
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Summary:The market for interactive platforms is rapidly growing, and touchscreens have been incorporated in an increasing number of devices. Thus, the area of smart objects and devices is strongly increasing by adding interactive touch and multimedia content, leading to new uses and capabilities. In this work, a flexible screen printed sensor matrix is fabricated based on silver ink in a polyethylene terephthalate (PET) substrate. Diamond shaped capacitive electrodes coupled with conventional capacitive reading electronics enables fabrication of a highly functional capacitive touchpad, and also allows for the identification of marked objects. For the latter, the capacitive signatures are identified by intersecting points and distances between them. Thus, this work demonstrates the applicability of a low cost method using royalty-free geometries and technologies for the development of flexible multitouch touchpads for the implementation of interactive and object recognition applications. Portuguese Foundation for Science and Technology (FCT) in the framework of the Strategic Funding UID/FIS/04650/2013. The authors thank the FCT for financial support under projects PTDC/EEI-SII/5582/2014 and PTDC/CTM-ENE/5387/2014. P. C., J.O. and V. C. also thank the FCT for the SFRH/BPD/110914/2015, SFRH/BPD/98219/2013 and SFRH/BPD/97739/2013 grants, respectively. Financial support from the Basque Government Industry Department under the ELKARTEK Program is also acknowledged as well as funding by theSpanish Ministry of Economy and Competitiveness (MINECO) through the project MAT2016-76039-C4-3-R
ISSN:1424-8220
1424-8220
DOI:10.3390/s17122786