Silver nanowire-composite electrodes for long-term electrocardiogram measurements

Liu, Benyan; Luo, Zhangyuan; Zhang, Wenzan; Tu, Quan; Jin, Xun

doi:10.1016/j.sna.2016.06.008

Cited by 33 publications

(20 citation statements)

References 17 publications

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“…Figure 6g shows an extended comparison of the signals from the different electrodes over several beats, and it can be seen that similar events occur in the signal obtained with the commercial electrode as well. Compared to previous studies incorporating dry ECG sensing electrodes, (Liu et al, 2016;Myers et al, 2015) the signal presented while the subject is jogging shows fewer motion artefacts and less baseline wander.…”

Section: (G)mentioning

confidence: 68%

“…Sensors developed so far have typically focused on sensing capabilities and lacked the necessary adhesive properties to stick to human skin without the use of additional adhesives, such as Velcro or tape (Kim et al, ; Myers et al, ). Those sensors that have incorporated an adhesive mechanism have not been compatible with current clinical ECG technology (Liu et al, ). We have expanded on this type of work by developing a cohesive prototype that records excellent signal quality, is compatible with current ECG technology via a custom snap that can be attached to commercial ECG leads and has the necessary adhesion to be worn by patients long‐term.…”

Section: Introductionmentioning

confidence: 99%

“…Previously, work has been done to create biophysical sensors that incorporate flexible electrodes (Kim et al, 2018;Liu, Luo, Zhang, Tu, & Jin, 2016;Myers et al, 2015). Sensors developed so far have typically focused on sensing capabilities and lacked the necessary adhesive properties to stick to human skin without the use of additional adhesives, such as Velcro or tape (Kim et al, 2018;Myers et al, 2015).…”

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confidence: 99%

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Cohesive dry ECG sensor using silver nanowires and PDMS tuned for adhesion

Helgason

Banavali²,

Lai

2019

Med Devices & Sens

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A technique is exploited to develop a dry ECG sensor using polydimethylsiloxane (PDMS) with enhanced adhesion to skin. The sensor consists of silver nanowires (AgNWs) embedded in PDMS. The adhesive solution presented is a novel technique which combines using high‐ratio 25:1 PDMS selectively deposited in a thin layer on the surface of a sensor body that is made from 15:1 PDMS. With this adhesive mechanism, we demonstrate a cohesive ECG sensor which can adhere to a subject without the use of additional sticky adhesives and that is compatible with current ECG technology. PDMS is residue free and highly biocompatible meaning this is a solution suitable for long‐term wear. We demonstrate that our sensor can be filtered to similar quality of a traditional ECG sensor, and further show that our sensors stay in place for more than 24 hr and it can adhere to skin with an average maximum force of about 1.09 N.

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Section: (G)mentioning

confidence: 68%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Cohesive dry ECG sensor using silver nanowires and PDMS tuned for adhesion

Helgason

Banavali²,

Lai

2019

Med Devices & Sens

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“…For this reason, Ag/AgCl electrodes are not suitable for wearable health care devices which are intended for long-term continuous monitoring. To overcome these issues, many dry electrodes not requiring an electrolyte gel have been studied [ 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 ]. Among the proposed solutions, rigid metal electrodes are not suitable for wearable applications owing to their high contact impedance, and the presence of motion artifacts caused by variations in the contact area during body movements [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

“…The contact impedance of metal electrodes can be reduced by using a micro-needle array structure [ 20 ], but this approach can cause severe damage to the skin due to penetration of the micro needles. Some of the recent approaches use flexible electrodes, such as textiles and conductive polymers, in order to increase the contact area between the skin and the electrode by making conformal contact, which reduces the contact impedance [ 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 ]. Textile electrodes can be used in a wide variety of applications and have a larger contact area compared to rigid electrodes, but do not provide completely conformal contact with skin [ 25 , 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

ECG Monitoring Garment Using Conductive Carbon Paste for Reduced Motion Artifacts

Lee

Yun

2017

Polymers

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Abstract:The heart is a fundamental organ of the human circulatory system and the continuous measurement of electrocardiogram (ECG) signals is of great importance for pre-detection of heart diseases. Dry electrodes that do not require electrolyte gel have been developed for wearable ECG monitoring applications. However, this kind of electrode often introduces motion artifacts because of the high contact impedance between the electrode and skin. We propose a wearable ECG monitoring garment that employs electrodes made of conductive carbon-based paste. This paste is directly applied to the skin and after drying for 5 min, it forms a patch electrode that is detachable and flexible. The contact impedance between the patch electrode and the skin is very low because the paste covers the skin in a conformal manner. The experimental results show that the contact area of the carbon-based paste on the skin replica is almost 100%. At frequencies under 10 Hz, the contact impedance of the patch electrode is of 70.0 kΩ, much lower than the typical 118.7 kΩ impedance of a Ag/AgCl electrode. We also demonstrate that the ECG signals measured using the custom-designed garment and the patch electrodes are very stable even during actions such as walking and running.

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Multifunctional Smart Skin Adhesive Patches for Advanced Health Care

Hwang

Kim

Seong

et al. 2018

Adv Healthcare Materials

150

127

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A skin adhesive patch is the most fundamental and widely used medical device for diverse health-care purposes. Conventional skin adhesive patches have been mainly utilized for routine medical purposes such as wound management, fixation of medical devices, and simple drug release. In contrast to traditional skin adhesive patches, recently developed patches incorporate multiple key functions of bulky medical devices into a thin, flexible patch based on emerging nanomaterials and flexible electronic technologies. Consequently, the meaning of the term "skin adhesive patch" becomes broader and smarter compared to the traditional term. This review summarizes recent efforts undertaken in the development of multifunctional advanced skin adhesive patches, and briefly describes future directions and challenges toward the next generation of smart skin adhesive patches for ubiquitous personalized health care.

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Silver nanowire-composite electrodes for long-term electrocardiogram measurements

Cited by 33 publications

References 17 publications

Cohesive dry ECG sensor using silver nanowires and PDMS tuned for adhesion

Cohesive dry ECG sensor using silver nanowires and PDMS tuned for adhesion

ECG Monitoring Garment Using Conductive Carbon Paste for Reduced Motion Artifacts

Multifunctional Smart Skin Adhesive Patches for Advanced Health Care

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