Please use this identifier to cite or link to this item: https://hdl.handle.net/1822/75472

TitleEnvironmentally friendly Graphene-Based conductive inks for multitouch capacitive sensing surfaces
Author(s)Franco, M.
Correia, V.
Marques, P.
Sousa, F.
Silva, R.
Figueiredo, B. R.
Bernardes, Adriana
Silva, Rui P. Silva
Lanceros-Méndez, S.
Costa, Pedro Filipe Ribeiro
Keywordsfunctional ink
multitouch capacitive sensing
printed electronics
screen-printing
water-based inks
Issue date6-Sep-2021
PublisherWiley
JournalAdvanced Materials Interfaces
CitationFranco, M., Correia, V., Marques, P., Sousa, F., Silva, R., Figueiredo, B. R., Bernardes, A., Silva, R. P., Lanceros-Mendez, S., Costa, P., Environmentally Friendly Graphene-Based Conductive Inks for Multitouch Capacitive Sensing Surfaces. Adv. Mater. Interfaces 2021, 8, 2100578. https://doi.org/10.1002/admi.202100578
Abstract(s)Conductive graphene-based inks can be tailored for functional applications and, in particular, for printed electronics. Transparent, flexible, and easy printable materials are nowadays increasingly required for sensing applications. In this context, a capacitive multitouch sensing surface is developed using conductive graphene nanoparticles-based ink with carboxymethyl cellulose as a binder. The rheological properties of the ink are tailored to be printed by the screen-printing technique. The touchscreen is based on printed conductive lines and columns and thus the characteristics of the printed lines are optimized based on the line width and number of printing steps. The optimal printed conditions are 0.5 mm of width and five printing steps, leading to electrical resistance of 2.4 kΩ. The screen-printed flexible touchscreen is composed of 40 columns × 28 rows. An electric circuit and a graphic interface are also developed leading to an 8” touchscreen with multitouch capabilities and fast signal processing.
TypeArticle
URIhttps://hdl.handle.net/1822/75472
DOI10.1002/admi.202100578
ISSN2196-7350
e-ISSN2196-7350
Publisher versionhttps://onlinelibrary.wiley.com/doi/full/10.1002/admi.202100578
Peer-Reviewedyes
AccessRestricted access (UMinho)
Appears in Collections:CAlg - Artigos em revistas internacionais / Papers in international journals
FUNCTIONAL AND SMART MATERIALS AND SURFACES FOR ADVANCED APPLICATIONS (2018 - ...)
IPC - Artigos em revistas científicas internacionais com arbitragem

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