Electrically functionalized body surface for deep-tissue bioelectrical recording
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866909416952954880 |
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| author | Zhang, Dehui Zhang, Yucheng Xu, Dong Wang, Shaolei Wang, Kaidong Zhou, Boxuan Ling, Yansong Liu, Yang Cui, Qingyu Yin, Junyi Zhu, Enbo Zhao, Xun Wan, Chengzhang Chen, Jun Hsiai, Tzung K. Huang, Yu Duan, Xiangfeng |
| author_facet | Zhang, Dehui Zhang, Yucheng Xu, Dong Wang, Shaolei Wang, Kaidong Zhou, Boxuan Ling, Yansong Liu, Yang Cui, Qingyu Yin, Junyi Zhu, Enbo Zhao, Xun Wan, Chengzhang Chen, Jun Hsiai, Tzung K. Huang, Yu Duan, Xiangfeng |
| contents | Directly probing deep tissue activities from body surfaces offers a noninvasive approach to monitoring essential physiological processes1-3. However, this method is technically challenged by rapid signal attenuation toward the body surface and confounding motion artifacts4-6 primarily due to excessive contact impedance and mechanical mismatch with conventional electrodes. Herein, by formulating and directly spray coating biocompatible two-dimensional nanosheet ink onto the human body under ambient conditions, we create microscopically conformal and adaptive van der Waals thin films (VDWTFs) that seamlessly merge with non-Euclidean, hairy, and dynamically evolving body surfaces. Unlike traditional deposition methods, which often struggle with conformality and adaptability while retaining high electronic performance, this gentle process enables the formation of high-performance VDWTFs directly on the body surface under bio-friendly conditions, making it ideal for biological applications. This results in low-impedance electrically functionalized body surfaces (EFBS), enabling highly robust monitoring of biopotential and bioimpedance modulations associated with deep-tissue activities, such as blood circulation, muscle movements, and brain activities. Compared to commercial solutions, our VDWTF-EFBS exhibits nearly two-orders of magnitude lower contact impedance and substantially reduces the extrinsic motion artifacts, enabling reliable extraction of bioelectrical signals from irregular surfaces, such as unshaved human scalps. This advancement defines a technology for continuous, noninvasive monitoring of deep-tissue activities during routine body movements. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_03749 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Electrically functionalized body surface for deep-tissue bioelectrical recording Zhang, Dehui Zhang, Yucheng Xu, Dong Wang, Shaolei Wang, Kaidong Zhou, Boxuan Ling, Yansong Liu, Yang Cui, Qingyu Yin, Junyi Zhu, Enbo Zhao, Xun Wan, Chengzhang Chen, Jun Hsiai, Tzung K. Huang, Yu Duan, Xiangfeng Medical Physics Signal Processing Biological Physics Directly probing deep tissue activities from body surfaces offers a noninvasive approach to monitoring essential physiological processes1-3. However, this method is technically challenged by rapid signal attenuation toward the body surface and confounding motion artifacts4-6 primarily due to excessive contact impedance and mechanical mismatch with conventional electrodes. Herein, by formulating and directly spray coating biocompatible two-dimensional nanosheet ink onto the human body under ambient conditions, we create microscopically conformal and adaptive van der Waals thin films (VDWTFs) that seamlessly merge with non-Euclidean, hairy, and dynamically evolving body surfaces. Unlike traditional deposition methods, which often struggle with conformality and adaptability while retaining high electronic performance, this gentle process enables the formation of high-performance VDWTFs directly on the body surface under bio-friendly conditions, making it ideal for biological applications. This results in low-impedance electrically functionalized body surfaces (EFBS), enabling highly robust monitoring of biopotential and bioimpedance modulations associated with deep-tissue activities, such as blood circulation, muscle movements, and brain activities. Compared to commercial solutions, our VDWTF-EFBS exhibits nearly two-orders of magnitude lower contact impedance and substantially reduces the extrinsic motion artifacts, enabling reliable extraction of bioelectrical signals from irregular surfaces, such as unshaved human scalps. This advancement defines a technology for continuous, noninvasive monitoring of deep-tissue activities during routine body movements. |
| title | Electrically functionalized body surface for deep-tissue bioelectrical recording |
| topic | Medical Physics Signal Processing Biological Physics |
| url | https://arxiv.org/abs/2412.03749 |