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Xu et al. Microstructures 2023;3:2023034 https://dx.doi.org/10.20517/microstructures.2023.19 Page 11 of 13

DECLARATIONS
Authors’ contributions
Writing original draft, Writing review and editing: Xu M
Conceptualization : Xu M, Zhou H, Chen X
Methodology: Xu M
Investigation and data curation: Xu M, Zeng D, Wang X, Nong P, Pan Y, Dong Q, Wang J
Supervision, project administration and funding acquisition: Zhou H, Chen X

Availability of data and materials
Not applicable.

Financial support and sponsorship
This work was supported by the Natural Science Foundation of China (No. 12064007, No. 11664008 and
No. 61761015), Natural Science Foundation of Guangxi (No. 2018GXNSFFA050001, No.
2017GXNSFDA198027, and No. 2017GXNSFFA198011), and High-Level Innovation Team and
Outstanding Scholar Program of Guangxi Institutes.

Conflicts of interest
All authors declared that there are no conflicts of interest.

Ethical approval and consent to participate
Not applicable.

Consent for publication
Not applicable.

Copyright
© The Author(s) 2023.

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