Reversible Crumpling of 2D Titanium Carbide (MXene) Nanocoatings for Stretchable Electromagnetic Shielding and Wearable Wireless Communication

In the emerging Internet of Things, stretchable antennas can facilitate wireless communication between wearable and mobile electronic devices around the body. The proliferation of wireless devices transmitting near the human body also raises interference and safety concerns that demand stretchable m...

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Bibliographic Details
Published in:Advanced functional materials 2020-01, Vol.30 (5), p.n/a
Main Authors: Li, Yang, Tian, Xi, Gao, Si‐Ping, Jing, Lin, Li, Kerui, Yang, Haitao, Fu, Fanfan, Lee, Jim Yang, Guo, Yong‐Xin, Ho, John S., Chen, Po‐Yen
Format: Article
Language:English
Subjects:
Antennas
Conductors
Dipole antennas
Electromagnetic shielding
Electronic devices
Fatigue tests
Human body
Internet of Things
Latex
Materials science
MXenes
Single wall carbon nanotubes
stretchable conductor
stretchable electromagnetic shielding
Ti3C2Tx MXene
Titanium carbide
Wearable technology
wearable wireless communication
Wireless communications
wrinkled and crumpled textures
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Summary:In the emerging Internet of Things, stretchable antennas can facilitate wireless communication between wearable and mobile electronic devices around the body. The proliferation of wireless devices transmitting near the human body also raises interference and safety concerns that demand stretchable materials capable of shielding electromagnetic interference (EMI). Here, an ultrastretchable conductor is fabricated by depositing a crumple‐textured coating composed of 2D Ti3C2Tx nanosheets (MXene) and single‐walled carbon nanotubes (SWNTs) onto latex, which can be fashioned into high‐performance wearable antennas and EMI shields. The resulting MXene‐SWNT (S‐MXene)/latex devices are able to sustain up to an 800% areal strain and exhibit strain‐insensitive resistance profiles during a 500‐cycle fatigue test. A single layer of stretchable S‐MXene conductors demonstrate a strain‐invariant EMI shielding performance of ≈30 dB up to 800% areal strain, and the shielding performance is further improved to ≈47 and ≈52 dB by stacking 5 and 10 layers of S‐MXene conductors, respectively. Additionally, a stretchable S‐MXene dipole antenna is fabricated, which can be uniaxially stretched to 150% with unaffected reflected power
ISSN:1616-301X
1616-3028
DOI:10.1002/adfm.201907451