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Highly stretchable slectric circuits from a composite material of silver nanoparticles and elastomeric fibres

Title
Highly stretchable slectric circuits from a composite material of silver nanoparticles and elastomeric fibres
Other Titles
미분류 Highly stretchable electric circuits from a composite material of silver nanoparticles and elastomeric fibres.
Author
배지현
Keywords
Electronic properties and materials; Nanocomposites; Nanoparticles
Issue Date
2012-11
Publisher
Nature Publishing Group
Citation
Nature Nanotechnology, 2012, 7(12), P.803-809
Abstract
Conductive electrodes and electric circuits that can remain active and electrically stable under large mechanical deformations are highly desirable for applications such as flexible displays1,2,3, field-effect transistors4,5, energy-related devices6,7, smart clothing8 and actuators9,10,11. However, high conductivity and stretchability seem to be mutually exclusive parameters. The most promising solution to this problem has been to use one-dimensional nanostructures such as carbon nanotubes and metal nanowires coated on a stretchable fabric12,13, metal stripes with a wavy geometry14,15, composite elastomers embedding conductive fillers16,17 and interpenetrating networks of a liquid metal and rubber18. At present, the conductivity values at large strains remain too low to satisfy requirements for practical applications. Moreover, the ability to make arbitrary patterns over large areas is also desirable. Here, we introduce a conductive composite mat of silver nanoparticles and rubber fibres that allows the formation of highly stretchable circuits through a fabrication process that is compatible with any substrate and scalable for large-area applications. A silver nanoparticle precursor is absorbed in electrospun poly (styrene-block-butadiene-block-styrene) (SBS) rubber fibres and then converted into silver nanoparticles directly in the fibre mat. Percolation of the silver nanoparticles inside the fibres leads to a high bulk conductivity, which is preserved at large deformations (σ ? 2,200 S cm?1 at 100% strain for a 150-μm-thick mat). We design electric circuits directly on the electrospun fibre mat by nozzle printing, inkjet printing and spray printing of the precursor solution and fabricate a highly stretchable antenna, a strain sensor and a highly stretchable light-emitting diode as examples of applications.
URI
https://www.nature.com/articles/nnano.2012.206http://hdl.handle.net/20.500.11754/50921
ISSN
1748-3387
DOI
10.1038/nnano.2012.206
Appears in Collections:
COLLEGE OF HUMAN ECOLOGY[S](생활과학대학) > CLOTHING & TEXTILES(의류학과) > Articles
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