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A Compliant Ionic Adhesive Electrode with Ultralow Bioelectronic Impedance.
Pan, Liang; Cai, Pingqiang; Mei, Le; Cheng, Yuan; Zeng, Yi; Wang, Ming; Wang, Ting; Jiang, Ying; Ji, Baohua; Li, Dechang; Chen, Xiaodong.
Afiliação
  • Pan L; Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.
  • Cai P; Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.
  • Mei L; Biomechanics and Biomaterials Laboratory, Department of Applied Mechanics, Beijing Institute of Technology, Beijing, 100081, China.
  • Cheng Y; Institute of High Performance Computing, Agency for Science Technology and Research (A*STAR), Singapore, 138632, Singapore.
  • Zeng Y; Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.
  • Wang M; Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.
  • Wang T; Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.
  • Jiang Y; Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.
  • Ji B; Institute of Applied Mechanics, Department of Engineering Mechanics, Zhejiang University, Hangzhou, 310027, China.
  • Li D; Beijing Advanced Innovation Center for Biomedical Engineering, Beijing, 100191, China.
  • Chen X; Institute of Applied Mechanics, Department of Engineering Mechanics, Zhejiang University, Hangzhou, 310027, China.
Adv Mater ; : e2003723, 2020 Aug 07.
Artigo em Inglês | MEDLINE | ID: mdl-32767395
ABSTRACT
Simultaneous implementation of high signal-to-noise ratio (SNR) but low crosstalk is of great importance for weak surface electromyography (sEMG) signals when precisely driving a prosthesis to perform sophisticated activities. However, due to gaps with the curved skin during muscle contraction, many electrodes have poor compliance with skin and suffer from high bioelectrical impedance. This causes serious noise and error in the signals, especially the signals from low-level muscle contractions. Here, the design of a compliant electrode based on an adhesive hydrogel, alginate-polyacrylamide (Alg-PAAm) is reported, which eliminates those large gaps through the strong electrostatic interaction and abundant hydrogen bond with the skin. The obtained compliant electrode, having an ultralow bioelectrical impedance of ≈20 kΩ, can monitor even 2.1% maximal voluntary contraction (MVC) of muscle. Furthermore, benefiting from the high SNR of >51 at low-level MVC, the crosstalk from irrelevant muscle is minimized through reducing the electrode size. Finally, a prosthesis is successfully demonstrated to precisely grasp a needle based on a 9 mm2 Alg-PAAm compliant electrode. The strategy to design such compliant electrodes provides the potential for improving the quality of dynamically weak sEMG signals to precisely control prosthesis in performing purposefully dexterous activity.
Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Idioma: Inglês Revista: Adv Mater Assunto da revista: Biofísica / Química Ano de publicação: 2020 Tipo de documento: Artigo País de afiliação: Singapura

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Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Idioma: Inglês Revista: Adv Mater Assunto da revista: Biofísica / Química Ano de publicação: 2020 Tipo de documento: Artigo País de afiliação: Singapura
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