Cu(OH)2 nanowires/graphene oxide composites based QCM humidity sensor with fast-response for real-time respiration monitoring

Fang, Han; Lin, Jian‐Bin; Hu, Zhixiang; Liu, Huan; Tang, Zirong; Shi, Tielin; Liao, Guanglan

doi:10.1016/j.snb.2019.127313

Cited by 50 publications

(24 citation statements)

References 41 publications

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“…In recent years, the advances in network technology and low power electronics have achieved great progress of wearable breathing sensors for real-time respiratory monitoring. Many efforts have been devoted to wearable sensors based on the respiratory related signals, including temperature, [6,7] humidity, [8][9][10][11] airflow [12][13][14] as well as the movement of chest and abdomen. [15][16][17][18] On the one hand, humidity, temperature, and airflow sensors used for monitoring respiration have been attached on skin or installed in mask near the nose and mouth, which are susceptible to the environment, uncomfortable and unaesthetic in practical application.…”

Section: Introductionmentioning

confidence: 99%

All‐Nanofiber Self‐Powered Skin‐Interfaced Real‐Time Respiratory Monitoring System for Obstructive Sleep Apnea‐Hypopnea Syndrome Diagnosing

Dong

Ning

Cheng

et al. 2021

Adv Funct Materials

131

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Human respiration is an indispensable physiological behavior of the body, which is an important indicator to evaluate health status, especially for sleep‐related diseases. A real‐time respiratory monitoring and sleep breathing detecting system with convenience, high sensitivity, simple fabrication, and wearing comfort still remains a challenge and urgently desirable. Here, a breathable, highly sensitive, and self‐powered electronic skin (e‐skin) based on a triboelectric nanogenerator (TENG) is reported for real‐time respiratory monitoring and obstructive sleep apnea‐hypopnea syndrome (OSAHS) diagnosis. By using multilayer polyacrylonitrile and “polyamide 66” nanofibers as the contact pairs, and deposited gold as the electrodes, a contact‐separation type of TENG‐based all‐nanofiber e‐skin is developed. The e‐skin has a peak power density of 330 mW m−2, high pressure sensitivity of 0.217 kPa−1, excellent working stability, and good air permeability. Therefore, the e‐skin is simultaneously capable of energy autonomy and accurate real‐time subtle respiration monitoring. Meanwhile, a self‐powered diagnostic system for real‐time detection and severity evaluation of obstructive sleep apnea‐hypopnea syndrome are further developed to prevent the occurrence of OSAHS, delay its development, and improve sleep quality. This study hopes to pave a new and practical pathway for real‐time respiration monitoring and sleep breathing diseases clinical detection.

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Section: Introductionmentioning

confidence: 99%

All‐Nanofiber Self‐Powered Skin‐Interfaced Real‐Time Respiratory Monitoring System for Obstructive Sleep Apnea‐Hypopnea Syndrome Diagnosing

Dong

Ning

Cheng

et al. 2021

Adv Funct Materials

131

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show abstract

“…Cu (OH) 2 nanowires/ go composite humidity sensitive films were prepared by in-situ growth and drop injection method. It has good humidity sensitive performance, and can distinguish different breathing modes, including normal breathing, speaking, nose breathing, as well as humidity changes before and after drinking water, showing potential applications in the analysis of human health [33].…”

Section: Application Progress Of Graphene-based Humidity Sensorsmentioning

confidence: 99%

Research Progress of Graphene-based Flexible Sensor in Wearable Health Monitoring

Shang¹,

Zhao²

2019

JFBI

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Research of flexible sensors for human wearable health monitoring are of paramount importance. In view of the problems of traditional sensors, such as complexity, low sensitivity, insufficient strain, short service life and incompatibility with human body, the research progress of Graphene-based flexible sensors in wearable health monitoring is systematically introduced. Benefitting from the commendable flexible mechanical properties and high durability, flexible Graphene-based sensors promote its applications in motion detection, body temperature monitoring, sweat ion real-time monitoring, voice recognition, pulsebeating, and respiration detection. The challenges and prospects of the application of Graphene-based flexible sensors in wearable health monitoring are pointed out. It is expected that most current research, which is still experimental, will need several more years of study before it becomes widely used. In the future, more attention should be paid to the lack of flexibility and high sensitivity of Graphene, the preparation of high purity Graphene, the application of composite materials and the development of advanced technology.

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“…[2,3] According to the detecting subjects, wearable sensors include several categories, such as strain sensor, [4][5][6] humidity sensor, [7][8][9] and temperature sensor. [10] Generally, the humidity sensor has been applied to monitor respiration, [11][12][13] environmental relative humidity, baby diaper wetting [14] et al Its fundamental working principle is that water molecules can be absorbed on the moisture sensitive materials. Thus, the select of its materials is in urgent demand.…”

Section: Introductionmentioning

confidence: 99%

“…Generally, the humidity sensor has been applied to monitor respiration, [ 11–13 ] environmental relative humidity, baby diaper wetting [ 14 ] et al. Its fundamental working principle is that water molecules can be absorbed on the moisture sensitive materials.…”

Section: Introductionmentioning

confidence: 99%

A Facile and Flexible Humidity Sensor Based on Porous PDMS/AgNWs and GO for Environmental Humidity and Respiratory Detection

Zee

et al. 2022

Macro Materials & Eng

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Humidity sensors, benefit from their superior humidity-sensitive components, are able to respond to the environment moisture changes. Based on this feature, the humidity sensor plays an increasingly vital role in biological detection. To improve the performance of humidity sensors, a large number of optimizations have been made from several aspects, such as material synthesis and structural design. In this study, a novel humidity sensor is designed to increase its specific surface area to carry more humidity-sensitive and conductive materials. A porous polydimethylsiloxane (PDMS) substrate is prepared in an economical friendly approach by using the thermal decomposition of sodium bicarbonate (NaHCO 3 ). Meanwhile, high-quality nano silvers (AgNWs) are applied as the intermediate conductive layer connecting the substrate and detective layer. graphene oxide (GO) is used as the humidity sensitive material in the sensor. It is remarkable that this sensor can detect the humidity with a wide range of 8.6 RH% to 93 RH% in a quick response with high sensitivity. Since this humidity sensor showed powerful functions, such as monitoring respiration and detecting environmental humidity, it will have broad potentials for real-time clinical and domestic healthcare.

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Cu(OH)2 nanowires/graphene oxide composites based QCM humidity sensor with fast-response for real-time respiration monitoring

Cited by 50 publications

References 41 publications

All‐Nanofiber Self‐Powered Skin‐Interfaced Real‐Time Respiratory Monitoring System for Obstructive Sleep Apnea‐Hypopnea Syndrome Diagnosing

All‐Nanofiber Self‐Powered Skin‐Interfaced Real‐Time Respiratory Monitoring System for Obstructive Sleep Apnea‐Hypopnea Syndrome Diagnosing

Research Progress of Graphene-based Flexible Sensor in Wearable Health Monitoring

A Facile and Flexible Humidity Sensor Based on Porous PDMS/AgNWs and GO for Environmental Humidity and Respiratory Detection

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