The ongoing revolution in touch panel technology and electronics demands the need for thin films, which are flexible, stretchable, conductive, and highly touch responsive. In this regard, conductive elastomer nanocomposites offer potential solutions for these stipulations; however, viability is limited to the poor dispersion of conductive nanomaterials such as graphene into the matrix. Here, we fabricated a reduced graphene oxide (rGO) and poly(dimethylsiloxane) (PDMS) elastomer based transparent and flexible conductive touch responsive film by dispersing rGO honeycombs uniformly into PDMS elastomer through an ionic liquid (IL) modification. Pursuing a simple, scalable, and safe method of solution casting, this provides a versatile and creative design of a transparent and stretchable rGO/IL-PDMS capacitive touch responsive, where rGO acts as a sensing element. This transparent film with ∼70% transmittance exhibits approximately a five times faster response in comparison to rGO/PDMS film, with negligible degradation over time. The performance of this touch screen film is expected to have applications in the emerging field of foldable electronics.
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25 April 2016
Research Article|
April 28 2016
Reduced graphene oxide filled poly(dimethyl siloxane) based transparent stretchable, and touch-responsive sensors
Deepalekshmi Ponnamma;
Deepalekshmi Ponnamma
1Center for Advanced Materials,
Qatar University
, P. O. Box 2713, Doha, Qatar
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Kishor Kumar Sadasivuni;
Kishor Kumar Sadasivuni
2Mechanical and Industrial Engineering,
Qatar University
, P.O. Box 2713, Doha, Qatar
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John-John Cabibihan;
John-John Cabibihan
2Mechanical and Industrial Engineering,
Qatar University
, P.O. Box 2713, Doha, Qatar
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W. Jong Yoon;
W. Jong Yoon
3School of Science, Technology, Engineering, and Mathematics,
University of Washington
, Bothell, Washington 98011, USA
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Bijandra Kumar
Bijandra Kumar
a)
4Conn Center for Renewable Energy Research,
University of Louisville
, Louisville, Kentucky 40292, USA
5Research and Development Centre in Pharmaceutical Science and Applied Chemistry, Poona College of Pharmacy,
Bharati Vidyapeeth Deemed University Erandawane
, Pune 411038, India
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a)
Author to whom correspondence should be addressed. Electronic mail: bijandra.kumar@louisville.edu
Appl. Phys. Lett. 108, 171906 (2016)
Article history
Received:
November 28 2015
Accepted:
April 07 2016
Citation
Deepalekshmi Ponnamma, Kishor Kumar Sadasivuni, John-John Cabibihan, W. Jong Yoon, Bijandra Kumar; Reduced graphene oxide filled poly(dimethyl siloxane) based transparent stretchable, and touch-responsive sensors. Appl. Phys. Lett. 25 April 2016; 108 (17): 171906. https://doi.org/10.1063/1.4947595
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