Silver nanowire-composite electrodes for long-term electrocardiogram measurements

Abstract Composite electrodes are fabricated for long-term electrocardiogram (ECG) measurements. The electrode consists of a polydimethylsiloxane base, silver nanowire layer, and adhesive layer. The adhesive layer is fabricated by loading carbon nanotubes into adhesive polydimethylsiloxane. An electrode patch consisting of three composite electrodes and an adhesive polydimethylsiloxane layer is fabricated and combined with a wireless acquisition system to obtain ECG measurements. The composite electrode patch is self-adhesive and can conform to the skin, achieving robust contact between electrode and skin and thus decreasing motion artifacts. The composite electrodes combined with the measurement system are successfully used for wireless long-term recording of ECG signals. Continuous testing for 8 days shows that the ECG signal amplitude decreases slightly after wearing for 6 days and can be largely recovered by cleaning with ethanol. The composite electrodes are flexible and exhibit good ECG performance, and therefore can be used in wearable medical monitoring systems.

[1]  K. Park,et al.  Flexible polymeric dry electrodes for the long-term monitoring of ECG , 2008 .

[2]  Zhangyuan Luo,et al.  A novel method of fabricating carbon nanotubes-polydimethylsiloxane composite electrodes for electrocardiography , 2015, Journal of biomaterials science. Polymer edition.

[3]  S Suave Lobodzinski,et al.  ECG patch monitors for assessment of cardiac rhythm abnormalities. , 2013, Progress in cardiovascular diseases.

[4]  Yong Gyu Lim,et al.  Flexible Capacitive Electrodes for Minimizing Motion Artifacts in Ambulatory Electrocardiograms , 2014, Sensors.

[5]  Chih-Wei Chang,et al.  A Low-Power Bio-Potential Acquisition System with Flexible PDMS Dry Electrodes for Portable Ubiquitous Healthcare Applications , 2013, Sensors.

[6]  Yong Zhu,et al.  Wearable silver nanowire dry electrodes for electrophysiological sensing , 2015 .

[7]  Sang-Hoon Lee,et al.  CNT/PDMS Composite Flexible Dry Electrodesfor Long-Term ECG Monitoring , 2012, IEEE Transactions on Biomedical Engineering.

[8]  N. A. Siddiqui,et al.  DISPERSION AND FUNCTIONALIZATION OF CARBON NANOTUBES FOR POLYMER-BASED NANOCOMPOSITES: A REVIEW , 2010 .

[9]  Jae Hee Lee,et al.  Shear induced CNT/PDMS conducting thin film for electrode cardiogram (ECG) electrode , 2012, BioChip Journal.

[10]  L. Kirkup,et al.  A direct comparison of wet, dry and insulating bioelectric recording electrodes. , 2000, Physiological measurement.

[11]  Ye Li,et al.  A Wearable Context-Aware ECG Monitoring System Integrated with Built-in Kinematic Sensors of the Smartphone , 2015, Sensors.

[12]  Sunho Jeong,et al.  A highly stretchable, helical copper nanowire conductor exhibiting a stretchability of 700% , 2014 .

[13]  P. M. Mendes,et al.  Flexible PDMS -based dry electrodes for electro-optic acquisition of ECG signals in wearable devices , 2010, 2010 Annual International Conference of the IEEE Engineering in Medicine and Biology.

[14]  Sang-Hoon Lee,et al.  A capacitive, biocompatible and adhesive electrode for long-term and cap-free monitoring of EEG signals. , 2013, Journal of neural engineering.

[15]  Nikolaos G. Bourbakis,et al.  A Survey on Wearable Sensor-Based Systems for Health Monitoring and Prognosis , 2010, IEEE Transactions on Systems, Man, and Cybernetics, Part C (Applications and Reviews).

[16]  K. Lee,et al.  Self-adhesive epidermal carbon nanotube electronics for tether-free long-term continuous recording of biosignals , 2014, Scientific Reports.

[17]  Tingrui Pan,et al.  Photopatternable Conductive PDMS Materials for Microfabrication , 2008 .

[18]  J. Webster,et al.  Dry electrodes for electrocardiography , 2013, Physiological measurement.