Guoyi KANG, Yisheng ZHONG, Jiaxin JIANG, Xianruo DU, Gaofeng ZHENG. Low-temperature direct writing fabrication of flexible humidity sensors[J]. Optics and Precision Engineering, 2023, 31(22): 3279
- Optics and Precision Engineering
- Vol. 31, Issue 22, 3279 (2023)
Fig. 1. Principle of electrohydrodynamic direct writing equipment and sintering process
Fig. 2. Characterization spectra of precursor fibers
Fig. 3. Relationship between precursor fiber diameter and process parameters
Fig. 4. Relationship between conductive fiber resistance and sintering time
Fig. 5. Scanning electron microscope image of conductive fiber resistance
Fig. 6. Scanning electron microscope image of 40 layers of precursor fiber stack
Fig. 7. Relationship between the relevant parameters of the fiber and the number of stacked layers
Fig. 8. Response performance of humidity sensor
Fig. 9. Sensor circuit diagram
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Table 1. Saturated salt solution and relative humidity
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