FIG. 12.
Electrophysiological recording using fibrous bioelectronics. (a) A photograph of neural probe after integration of hydrogel/polymer composite fiber. (b) The microscopic image of the fiber in a swollen state. Temporal study of the potential (c) and signal-to-noise ratio (d) recorded by hydrogel hybrid probes and similar polymer probes. (a)–(d), Reproduced with permission from Park et al., Nat. Commun. 12, 3435 (2021). Copyright 2021 Author(s), licensed under a Creative Commons Attribution (CC BY) license.50 (e) Schematic image of microfiber neural probe made of soft CNT core with sodium alginate shell. (f) Photograph of the fibrous neural probe implanted in a mouse brain. (g) Action potential measurements realized by micro-fibrous neural probe. (e)–(g) Reproduced with permission from Tang et al., J. Mater. Chem. B 8, 4387 (2020). Copyright 2020 Royal Society of Chemistry.172 (h) Snapshot of surgical use for wireless sensing sutures. (i) Integration of multiple sensors for their in vivo applications. (j) Wireless measurement of harmonic backscattering spectra for application of suture at different frequency range. (h)–(j) Reproduced with permission from Kalidasan et al., Nat. Biomed. Eng. 5, 1217 (2021). Copyright 2021 Springer Nature.173