Applications, challenges, and prospects of hydrogel in brain-computer interface

doi:10.12267/j.issn.2096-5931.2026.06.006

Abstract

Abstract:

Conventional brain-computer interfaces often employ rigid materials such as silicon and metals, which struggle to meet the clinical requirements for long-term implantation. Hydrogels, with their high water content, adjustable modulus, excellent biocompatibility, and efficient ion transport, offer a feasible solution for constructing flexible and highly stable neural interfaces. By summarizing the advantages, performance, and chemical structures of hydrogels, this paper elaborates on the current state of their application in neural interfaces, provides an in-depth analysis of existing challenges. Also, this paper offers prospects for the design of high-performance hydrogels, the construction of biomimetic interfaces, flexible manufacturing technologies, and clinical translation pathways. The goal is to provide a relatively comprehensive reference for the fundamental research and engineering applications of hydrogel-based brain-computer interfaces.

Key words: hydrogel, brain-computer interface, neural interface, flexible electrode, biocompatibility, implantation

CLC Number:

R318.08

ZHANG Junxia, WANG Minghao, LIU Liwen, XU Dan, BIAN Di. Applications, challenges, and prospects of hydrogel in brain-computer interface[J]. Information and Communications Technology and Policy, 2026, 52(6): 35-40.

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URL:

http://ictp.caict.ac.cn/EN/10.12267/j.issn.2096-5931.2026.06.006

http://ictp.caict.ac.cn/EN/Y2026/V52/I6/35

Figures/Tables 1

References 29

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