Reduction of appearance artifacts in wearable on-skin electronics

Clinical Snapshot

Key Findings

• P Value: Not reported

• Effect Size: Not reported in abstract; qualitative claim of successful invisibility and unperceivability

• Primary Outcome: Fully invisible and unperceivable on-skin electrodes confirmed by sensory experiments (visual and tactile detection tasks) and physical characterisation of the film on skin

• Nnt Or Sensitivity: Not applicable in conventional clinical sense; no sensitivity/specificity data for signal detection performance reported; no NNT calculable from available data

• Confidence Interval: Not reported

Clinical Application

Currently at proof-of-concept stage only. Clinical translation requires regulatory approval, biocompatibility certification, manufacturing scalability, and validation in diverse patient populations. Not ready for clinical deployment. Feasibility in real-world clinical settings — including infection control, reusability, and compatibility with clinical monitoring systems — has not been assessed. No TGA approval or regulatory pathway has been described for this device. The technology is not currently listed on the Australian Register of Therapeutic Goods (ARTG). RACGP guidelines for wearable health monitoring devices emphasise patient safety, data security, and clinical validation prior to adoption. The PBS does not currently subsidise wearable electrophysiological monitoring devices of this type. The Australian context is particularly relevant given the country's diverse population, including Aboriginal and Torres Strait Islander communities where skin tone variability would directly affect electrode invisibility claims. Any future Australian clinical trials would need to address this diversity explicitly and engage with the Therapeutic Goods Administration's Digital Health and Software as a Medical Device frameworks. Patients requiring continuous or ambulatory facial electrophysiological monitoring, including those with epilepsy (EEG), neuromuscular disorders (EMG), oculomotor dysfunction (EOG), and individuals using brain-computer interfaces or human-machine interface technologies; also relevant to occupational health monitoring

Abstract

Facial electrophysiological signals are crucial to human-machine interfaces and health care monitoring. Soft and skin-conformable electrodes enabled long-term and comfortable signal monitoring. However, the appearance of the electrodes affects the wearer's social interactions and self-identity, making daily usage difficult and leaving appearance artifacts. Here, we developed fully invisible and unperceivable on-skin electrodes free from appearance artifacts. Neither the wearer nor observers can detect the visual and tactile presence of the electrodes on the skin. The unperceivable property was confirmed with sensory experiments and physical characterizations of the film on skin. Furthermore, our invisible electrodes did not affect the psychological conditions of the wearers, which confirms the feasibility of artifact-free monitoring in daily lives. Last, we demonstrated the functionality of our electrode with successful monitoring of various facial electrophysiological signals, including electrooculogram (EOG), electromyogram (EMG), and electroencephalogram (EEG). Our fully invisible electrodes provide a promising direction in developing on-skin bioelectronics, seamlessly integrating health monitoring and human-computer interaction technologies into people's daily lives.

References

1. 1.Liu, Y., Ito, S., Kato, T., Wang, L., Zhu, Y., De Mulatier, S., Arao, H., Suwazono, S., Asano, H., Zhou, Y., Mitomo, H., Gong, H., Nomura, O., Kagawa, G., Watanabe, N., Behfar, M. H., Kuroiwa, Y., Tatsuma, T., Sugano, Y., Takahashi, H., Asai, M., Kang, J., & Matsuhisa, N. (2026). Reduction of appearance artifacts in wearable on-skin electronics. Science Advances. https://doi.org/10.1126/sciadv.aee6417