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. 2023 Mar 13;15(6):1423. doi: 10.3390/polym15061423

Figure 1.

Figure 1

(a) Laser direct writing to form interdigital electrodes on PI film; (b) pattern of interdigital electrodes; (c) illustration of hydrogel formation through UV lighting; (d) illustration of glucose-sensing principle: glucose binding and hydrogel swelling process.