The latest research progress of conductive hydrogels in the field of electrophysiological signal acquisition

Ding, Hongxin; Gu, Yunqing; Ren, Yun; Hu, Chaoxiang; Qiu, Qianfeng; Wu, Denghao; Mou, Jiegang; Wu, Zhenxing; Zhou, Huijie

doi:10.1039/d4tc00089g

Cited by 5 publications

(2 citation statements)

References 179 publications

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“…Due to the excellent properties, polymer materials can be seen everywhere [34,35]. To expand their applications in more fields, studies on enhancing the friction properties of polymer materials have been carried out [36].…”

Section: Effect Of Cnts On the Friction Properties Of Polymer Materialsmentioning

confidence: 99%

Tribological Properties of Blocky Composites with Carbon Nanotubes

Hu,

Gu,

Qiu

et al. 2024

IJMS

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A large amount of primary energy is lost due to friction, and the study of new additive materials to improve friction performance is in line with the concept of low carbon. Carbon nanotubes (CNTs) have advantages in drag reduction and wear resistance with their hollow structure and self-lubricating properties. This review investigated the mechanism of improving friction properties of blocky composites (including polymer, metal, and ceramic-based composites) with CNTs’ incorporation. The characteristic tubular structure and the carbon film make low wear rate and friction coefficient on the surface. In addition, the effect of CNTs’ aggregation and interfacial bond strength on the wear resistance was analyzed. Within an appropriate concentration range of CNTs, the blocky composites exhibit better wear resistance properties. Based on the differences in drag reduction and wear resistance in different materials and preparation methods, further research directions of CNTs have been suggested.

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Section: Effect Of Cnts On the Friction Properties Of Polymer Materialsmentioning

confidence: 99%

Tribological Properties of Blocky Composites with Carbon Nanotubes

Hu,

Gu,

Qiu

et al. 2024

IJMS

Self Cite

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“…These hydrogels offer several advantages, including their ability to penetrate through hair, high adhesion, excellent conformability to the skin, and long-term recording stability. Owing to the three-dimensional network of hydrophilic cross-linked polymer, hydrogels exhibit good biocompatibility and tissue-like softness, making them suitable for use on human skin [26]. Recently, Zhang et al developed a novel epidermal sensor based on a catechol-based MXene hydrogel with self-adhesiveness, high durability, and biocompatibility as shown in figure 2(d).…”

Section: Eeg and Emg Electrodes: Characteristics Materials Selection ...mentioning

confidence: 99%

Ionogels and eutectogels for stable and long-term EEG and EMG signal acquisition

Veronica,

Nyein,

Hsing

2024

Mater. Futures

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Neurological injuries and disorders have a significant impact on individuals' quality of life, often resulting in motor and sensory loss. To assess motor performance and monitor neurological disorders, non-invasive techniques such as electroencephalography (EEG) and electromyography (EMG) are commonly used. Traditionally employed wet electrodes with conductive gels are limited by lengthy skin preparation time and allergic reactions. Although dry electrodes and hydrogel-based electrodes can mitigate these issues, their applicability for long-term monitoring is limited. Dry electrodes are susceptible to motion artifacts, whereas hydrogel-based electrodes face challenges related to water-induced instability. Recently, ionogels and eutectogels derived from ionic liquids and deep eutectic solvents have gained immense popularity due to their non-volatility, ionic conductivity, thermal stability, and tunability. Eutectogels, in particular, exhibit superior biocompatibility. These characteristics make them suitable alternatives for the development of safer, robust, and reliable EEG and EMG electrodes. However, research specifically focused on their application for EEG and EMG signal acquisition remains limited. This article explores the electrode requirements and material advancements in EEG and EMG sensing, with a focus on highlighting the benefits that ionogels and eutectogels offer over conventional materials. It sheds light on the current limitations of these materials and proposes areas for further improvement in this field. The potential of these gel-based materials to achieve a seamless interface for high-quality and long-term electrophysiological signal acquisition is emphasized. Leveraging the unique properties of ionogels and eutectogels holds promise for future advancements in EEG and EMG electrode materials, leading to improved monitoring systems and enhanced patient outcomes. 

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Flexible Pressure, Humidity, and Temperature Sensors for Human Health Monitoring

Li,

Fang,

Wei

et al. 2024

Adv Healthcare Materials

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The rapid advancements in artificial intelligence, micro‐nano manufacturing, and flexible electronics technology have unleashed unprecedented innovation and opportunities for applying flexible sensors in healthcare, wearable devices, and human–computer interaction. The human body's tactile perception involves physical parameters such as pressure, temperature, and humidity, all of which play an essential role in maintaining human health. Inspired by the sensory function of human skin, many bionic sensors have been developed to simulate human skin's perception to various stimuli and are widely applied in health monitoring. Given the urgent requirements for sensing performance and integration of flexible sensors in the field of wearable devices and health monitoring, here is a timely overview of recent advances in pressure, humidity, temperature, and multi‐functional sensors for human health monitoring. It covers the fundamental components of flexible sensors and categorizes them based on different response mechanisms, including resistive, capacitive, voltage, and other types. Specifically, the application of these flexible tactile sensors in the area of human health monitoring is highlighted. Based on this, an extended overview of recent advances in dual/triple‐mode flexible sensors integrating pressure, humidity, and temperature tactile sensing is presented. Finally, the challenges and opportunities of flexible sensors are discussed.

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The latest research progress of conductive hydrogels in the field of electrophysiological signal acquisition

Abstract: Conductive hydrogels have great potential in the field of electrophysiological signal acquisition because of their outstanding properties.

Cited by 5 publications

References 179 publications

Tribological Properties of Blocky Composites with Carbon Nanotubes

Tribological Properties of Blocky Composites with Carbon Nanotubes

Ionogels and eutectogels for stable and long-term EEG and EMG signal acquisition

Flexible Pressure, Humidity, and Temperature Sensors for Human Health Monitoring

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