Flexible microfiber array film possessing light-activated conductive anisotropy

Diao, Lijuan; Li, Gaopeng; Ma, Qianli; Yu, Wensheng; Liu, Guixia; Wang, Jinxian; Dong, Xiangting

doi:10.1016/j.matchemphys.2021.124717

Cited by 4 publications

(1 citation statement)

References 29 publications

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“…In one such study, a metallic wood was developed by filling liquid metal into a well-aligned wood vessel . A number of other studies have attempted to create anisotropically conductive materials with the application of either electrospinning − or melt-extrusion and calendering processes . However, the rigidity and dryness of these materials make them difficult to use in human–machine interfaces, − which require biocompatibility as well as soft and wet properties that are similar to biological tissues.…”

Section: Introductionmentioning

confidence: 99%

Anisotropically Conductive Hydrogels with Directionally Aligned PEDOT:PSS in a PVA Matrix

Kim,

Park,

Park

et al. 2024

ACS Appl. Mater. Interfaces

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Electrical anisotropy, which is characterized by the efficient transmission of electrical signals in specific directions, is prevalent in both natural and engineered systems. However, traditional anisotropically conductive materials are often rigid and dry, thus limiting their utility in applications aiming for the seamless integration of various technologies with biological tissues. In the present study, we introduce a method for precisely controlling the microstructures of conductive and insulating polymers to create highly anisotropically conductive composite hydrogels. Our methodology involves combining aligned poly(vinyl alcohol) microfibrils, infused poly(3,4-ethylenedioxythiophene) polystyrenesulfonate, and sodium citrate precipitation to form dense, aligned conductive paths. This significantly enhances the electrical conductivity anisotropy (σ ∥ /σ ⊥ ≈ 60.8) within these composite hydrogels.

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