Opto-Electronic Engineering, Volume. 49, Issue 1, 210316-1(2022)
Laser direct writing of flexible antenna sensor for strain and humidity sensing
Fig. 1. (a) The fabrication process of laser direct writing; (b) The schematic diagram of antenna measurement
Fig. 2. (a) The electronical property of polyimide after carbonization under different laser power and laser speed; (b) The Raman curve; (c), (d) The SEM and (e), (f) the TEM of carbonized polyimide film
Fig. 3. (a) The curves of the refection coefficient (S11) for the circle antenna sensor at different applied strain; (b) The schematic diagram of antenna sensor for measuring the strain of metal sample and the curves of the refection coefficient (S11); (c) The fitting curves of circle antenna sensor by experiments and simulation; (d) The curves of the refection coefficient (S11) for the circle antenna sensor at different times and the curves of the refection coefficient (S11) for different circle antenna sensors; (e) The resonance frequencies and sensitivities of the antenna sensor at different times; (f) The resonance frequencies and sensitivities of different samples
Fig. 4. (a) The curves of the refection coefficient (S11) for the circle antenna sensor at different humidity; (b) The resonance frequency shift of the circle antenna at different humidity.
Fig. 5. (a) The curves of the refection coefficient (S11) for the circle antenna sensor at different temperature; (b) The resonance frequency shift of the circle antenna at different temperature
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Jiaqi Zhang, Yang Gao, Chun Li, Kuan Ju, Jianping Tan, Yanyan Ding, Fuzhen Xuan. Laser direct writing of flexible antenna sensor for strain and humidity sensing[J]. Opto-Electronic Engineering, 2022, 49(1): 210316-1
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Received: Sep. 29, 2021
Accepted: --
Published Online: Apr. 6, 2022
The Author Email: Gao Yang (yanggao@ecust.edu.cn)