Novel Flexible Ag/AgCl Quasi-Reference Electrode with Fishbone Nanowire Structure for Remarkable Potential Stability, Long-Term Reliability, and Noninvasive Electrocardiography

Article Chemistry, Analytical

Porous carbon-based robust, durable, and flexible electrochemical device for K+ detection in sweat

Tingting Jiang et al.

Summary: Ion sensors with high sensitivity and durability were prepared by coating polymer membranes on porous carbon electrodes. These sensors exhibited rapid response time, negligible potential drift, and outstanding robustness and durability.

ANALYST (2022)

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Article Chemistry, Analytical

Liquid Metal Fiber Mat as a Highly Stable Solid-State Junction for Inkjet-Printed Flexible Reference Electrodes

Xiao Lu et al.

Summary: An all-solid liquid-metal-fiber-mat-based membrane flexible reference electrode with high stability and minimal potential fluctuation has been developed, which is suitable for electrochemical sensing applications.

ANALYTICAL CHEMISTRY (2022)

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Article Engineering, Environmental

Three-layer core-shell Ag/AgCl/PEDOT: PSS composite fibers via a one-step single-nozzle technique enabled skin-inspired tactile sensors

Yuhang Wang et al.

Summary: High sensitivity is crucial for the development of wearable electronic devices. Fiber-based sensors depend on the conductive properties and surface structure of the fibers to achieve high sensitivity. In this study, PEDOT: PSS composite fibers with fast response time and high sensitivity were prepared, with a surface made of tightly stacked Ag nanoparticles contributing to the performance.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Chemistry, Multidisciplinary

Investigation of the AgCl Formation Mechanism on the Ag Wire Surface for the Fabrication of a Marine Low-Frequency-Electric-Field-Detection Ag/AgCl Sensor Electrode

Kang Rae Cho et al.

Summary: An optimal electrode surface structure for the LFEFD Ag/AgCl sensor was suggested based on the sequential AgCl formation process on the Ag wire under constant current. The AgCl formation was observed to start with Ag dissolution and cavity formation on the wire surface, followed by the growth of AgCl deposits primarily along scratch lines. The formation of a network structure with multiple AgCl layers was found to be controlled by the release rate of Ag+ from the wire and the applied current magnitude, leading to improved detection sensitivity and service lifetime for the sensor.

ACS OMEGA (2022)

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Article Engineering, Electrical & Electronic

Stable Bioelectric Signal Acquisition Using an Enlarged Surface-Area Flexible Skin Electrode

Inyeol Yun et al.

Summary: This study proposes a method to enhance the electrical characteristics of a noble-metal skin electrode by surface modification using gold nanoparticles to improve signal-to-noise ratio, while quantifying motion artifact through spectral analysis. The enhanced electrode interface increases the signal-to-noise ratio in electrocardiogram and electromyogram, and reduces motion noise compared to conventional Ag/AgCl electrode.

ACS APPLIED ELECTRONIC MATERIALS (2021)

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Article Materials Science, Multidisciplinary