CLC number:
On-line Access: 2024-07-10
Received: 2023-10-11
Revision Accepted: 2024-05-17
Crosschecked: 0000-00-00
Cited: 0
Clicked: 7
Xi Zhang, Junchi Ma, Hualin Deng, Jinming Zhong, Kaichen Xu, Qiang Wu, Bo Wen & Dongfeng Diao . A mixed-coordination electron trapping-enabled high-precision touch-sensitive screen for wearable devices[J]. Journal of Zhejiang University Science D, 2024, 7(4): 413-427.
@article{title="A mixed-coordination electron trapping-enabled high-precision
touch-sensitive screen for wearable devices",
author="Xi Zhang, Junchi Ma, Hualin Deng, Jinming Zhong, Kaichen Xu, Qiang Wu, Bo Wen & Dongfeng Diao ",
journal="Journal of Zhejiang University Science D",
volume="7",
number="4",
pages="413-427",
year="2024",
publisher="Zhejiang University Press & Springer",
doi="10.1007/s42242-024-00293-3"
}
%0 Journal Article
%T A mixed-coordination electron trapping-enabled high-precision
touch-sensitive screen for wearable devices
%A Xi Zhang
%A Junchi Ma
%A Hualin Deng
%A Jinming Zhong
%A Kaichen Xu
%A Qiang Wu
%A Bo Wen & Dongfeng Diao
%J Journal of Zhejiang University SCIENCE D
%V 7
%N 4
%P 413-427
%@ 1869-1951
%D 2024
%I Zhejiang University Press & Springer
%DOI 10.1007/s42242-024-00293-3
TY - JOUR
T1 - A mixed-coordination electron trapping-enabled high-precision
touch-sensitive screen for wearable devices
A1 - Xi Zhang
A1 - Junchi Ma
A1 - Hualin Deng
A1 - Jinming Zhong
A1 - Kaichen Xu
A1 - Qiang Wu
A1 - Bo Wen & Dongfeng Diao
J0 - Journal of Zhejiang University Science D
VL - 7
IS - 4
SP - 413
EP - 427
%@ 1869-1951
Y1 - 2024
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1007/s42242-024-00293-3
Abstract: Touch-sensitive screens are crucial components of wearable devices. Materials such as reduced graphene oxide (rGO), carbon
nanotubes (CNTs), and graphene offer promising solutions for flexible touch-sensitive screens. However, when stacked with
flexible substrates to form multilayered capacitive touching sensors, these materials often suffer from substrate delamination
in response to deformation; this is due to the materials having different Young’s modulus values. Delamination results in
failure to offer accurate touch screen recognition. In this work, we demonstrate an induced charge-based mutual capacitive
touching sensor capable of high-precision touch sensing. This is enabled by electron trapping and polarization effects related
to mixed-coordinated bonding between copper nanoparticles and vertically grown graphene nanosheets. Here, we used an
electron cyclotron resonance system to directly fabricate graphene–metal nanofilms (GMNFs) using carbon and copper, which
are firmly adhered to flexible substrates. After being subjected to 3000 bending actions, we observed almost no change in
touch sensitivity. The screen interaction system, which has a signal-to-noise ratio of 41.16 dB and resolution of 650 dpi, was
tested using a handwritten Chinese character recognition trial and achieved an accuracy of 94.82%. Taken together, these
results show the promise of touch-sensitive screens that use directly fabricated GMNFs for wearable devices.
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