A highly stable electrode with low electrode-skin impedance for wearable brain-computer interface

Hsieh, Ju Chun; Alawieh, Hussein; Li, Yang; Iwane, Fumiaki; Zhao, Linran; Anderson, Richard A.; Abdullah, Syed Ibtisam; Tang, Kai Wing Kevin; Wang, Wenliang; Pyatnitskiy, Ilya; Jia, Yaoyao; Millán, José del R.; Wang, Huiliang

doi:10.1016/j.bios.2022.114756

Cited by 28 publications

(14 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Further, approaches to enhance the portability of wearable devices by integrating detection and treatment devices still need to be developed before their commercialization. [300][301][302][303][304][305] Besides, sustainable and eco-friendly materials should be considered for fabricating e-skin patches to reduce costs and minimize waste.…”

Section: Discussionmentioning

confidence: 99%

Evolution of nanostructured skin patches towards multifunctional wearable platforms for biomedical applications

DODDA

Rybak

et al. 2023

Nanoscale

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 99%

Evolution of nanostructured skin patches towards multifunctional wearable platforms for biomedical applications

DODDA

Rybak

et al. 2023

Nanoscale

Self Cite

View full text Add to dashboard Cite

show abstract

“…This electrode was applied for a wireless EEG acquisition device to comfortably record EEG signals. Moreover, functional electrical stimulation can be realized by the device to facilitate post-stroke motor rehabilitation (Hsieh et al, 2022) (Figure 2A). Xu and co-workers developed a skin-like and integrated wearable sensor that can monitor a number of Frontiers in Bioengineering and Biotechnology frontiersin.org physiological human health indicators, including glucose, blood pressure, and caffeine.…”

Section: Tissue-like Deformable Skin Electronicsmentioning

confidence: 99%

“…Polyethylene glycol diacrylate was used as a cross-linker for the formation of hydrogel. Reproduced with permission from ref ( Hsieh et al, 2022 ). Copyright 2022 Elsevier (B) A representative set of 3D mesostructures formed by mechanically guided hierarchical assembly and dependence of their geometries on various design parameters.…”

Section: Tissue-like Deformable Skin Electronicsmentioning

confidence: 99%

Recent advances in electronic skins: material progress and applications

Cao

Cai

2022

Front. Bioeng. Biotechnol.

View full text Add to dashboard Cite

Electronic skins are currently in huge demand for health monitoring platforms and personalized medicine applications. To ensure safe monitoring for long-term periods, high-performance electronic skins that are softly interfaced with biological tissues are required. Stretchability, self-healing behavior, and biocompatibility of the materials will ensure the future application of electronic skins in biomedical engineering. This mini-review highlights recent advances in mechanically active materials and structural designs for electronic skins, which have been used successfully in these contexts. Firstly, the structural and biomechanical characteristics of biological skins are described and compared with those of artificial electronic skins. Thereafter, a wide variety of processing techniques for stretchable materials are reviewed, including geometric engineering and acquiring intrinsic stretchability. Then, different types of self-healing materials and their applications in electronic skins are critically assessed and compared. Finally, the mini-review is concluded with a discussion on remaining challenges and future opportunities for materials and biomedical research.

show abstract

“…Historically, studies of PEDOT:PSS and its gel form focus on invasive electrophysiological sensing including the human brain. [19][20][21][22][23] In the past few years, PEDOT-based [24][25][26][27][28][29][30] and other conducting polymer (CP) [31][32][33][34] composite hydrogels illustrate promising applications in noninvasive human electrophysiology in vivo. However, previous work along these lines demonstrates skin impedance comparable to the clinical standards (Table S1, Supporting Information).…”

Section: Introductionmentioning

confidence: 99%

Pure Conducting Polymer Hydrogels Increase Signal‐to‐Noise of Cutaneous Electrodes by Lowering Skin Interface Impedance

Martinez

Floch

Liu

et al. 2023

Adv Healthcare Materials

View full text Add to dashboard Cite

Cutaneous electrodes are routinely used for noninvasive electrophysiological sensing of signals from the brain, the heart, and the neuromuscular system. These bioelectronic signals propagate as ionic charge from their sources to the skin–electrode interface where they are then sensed as electronic charge by the instrumentation. However, these signals suffer from low signal‐to‐noise ratio arising from the high impedance at the tissue‐to‐electrode contact interface. This paper reports that soft conductive polymer hydrogels made purely of poly(3,4‐ethylenedioxy‐thiophene) doped with poly(styrene sulfonate) present nearly an order of magnitude decrease in the skin–electrode contact impedance (88%, 82%, and 77% at 10, 100, and 1 kHz, respectively) when compared to clinical electrodes in an ex vivo model that isolates the bioelectrochemical features of a single skin–electrode contact. Integrating these pure soft conductive polymer blocks into an adhesive wearable sensor enables high fidelity bioelectronic signals with higher signal‐to‐noise ratio (average 2.1 dB increase, max 3.4 dB increase) when compared to clinical electrodes across all subjects. The utility of these electrodes is demonstrated in a neural interface application. The conductive polymer hydrogels enable electromyogram‐based velocity control of a robotic arm to complete a pick and place task. This work provides a basis for the characterization and use of conductive polymer hydrogels to better couple human and machine.

show abstract

A highly stable electrode with low electrode-skin impedance for wearable brain-computer interface

Cited by 28 publications

References 63 publications

Evolution of nanostructured skin patches towards multifunctional wearable platforms for biomedical applications

Evolution of nanostructured skin patches towards multifunctional wearable platforms for biomedical applications

Recent advances in electronic skins: material progress and applications

Pure Conducting Polymer Hydrogels Increase Signal‐to‐Noise of Cutaneous Electrodes by Lowering Skin Interface Impedance

Contact Info

Product

Resources

About