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Title: Copper-Coated Reduced Graphene Oxide Fiber Mesh-Polymer Composite Films for Electromagnetic Interference Shielding
Expected to become mainstream in the electronic industry, flexible electronics still face major challenging issues. For polymeric based flexible electronic substrates in particular, these challenges include a lack of electromagnetic shielding capability and poor heat dissipation. Here, we report a highly flexible and thermally-conductive macroscopic polydimethylsiloxane (PDMS) polymer film embedded with copper-coated reduced graphene oxide (rGO) fiber meshes. rGO fibers are assembled into 3D fiber meshes and electroplated with micrometer-thick copper coatings, displaying excellent electrical and thermal conductivities. Oriented in the horizontal and perpendicular directions within the PDMS polymeric matrix, the fiber mesh severs as a highly electrically and thermally-conductive backbone through the in-plane direction. Meanwhile, the fiber mesh also effectively shields electromagnetic interference in the X-band without causing thermal damage. The macroscopic film maintains electrically-insulated in the through-plane direction. Utilizing both the favorable thermal and electrical properties of the graphene fiber-based mesh and the flexibility of the PDMS matrix, our film may exhibit potentials for flexible electronics applications such as wearable electronics thermal management and flexible microwave identification devices.  more » « less
Award ID(s):
1742806
PAR ID:
10161309
Author(s) / Creator(s):
; ; ; ; ; ;
Date Published:
Journal Name:
ACS Applied Nano Materials
ISSN:
2574-0970
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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