Directly writing flexible temperature sensor with graphene nanoribbons for disposable healthcare devices

Gong, Xue; Zhang, Long; Huang, Yinan; Wang, Shuguang; Pan, Ge‐Bo; Li, Liqiang

doi:10.1039/d0ra02815k

Cited by 51 publications

(34 citation statements)

References 66 publications

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“…a Schematic of the m-LRS process [ 170 ]. b Schematic diagrams showing fabrication process of the paper-based GNRs sensors [ 171 ]. c Fabrication process of the temperature sensors [ 87 ].…”

Section: Methodsmentioning

confidence: 99%

“…Bionic sensor arrays can scan and perceive threedimensional objects by using structural advantages. [171]. c Fabrication process of the temperature sensors [87].…”

Section: Micro-nano Patterned Fabricationmentioning

confidence: 99%

“…e Fabrication process for the mold, adhesive, and temperature sensor [108] Under the premise of realizing low-cost and large-area fabricating, disposable intelligent monitoring equipment not only allows monitoring behavior to use anytime and anywhere but also ensures the safety and hygiene of the flexible monitoring equipment. Gong et al [171] proposed a pen-on-paper fabricating method that uses a brush write or a mask to graphene nanoribbon (GNR) conductive ink dripped between the carbon nanotube electrodes on the paper base. Shown in Fig.…”

Section: Micro-nano Patterned Fabricationmentioning

confidence: 99%

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Printable, Highly Sensitive Flexible Temperature Sensors for Human Body Temperature Monitoring: A Review

Chen

et al. 2020

Nanoscale Res Lett

169

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In recent years, the development and research of flexible sensors have gradually deepened, and the performance of wearable, flexible devices for monitoring body temperature has also improved. For the human body, body temperature changes reflect much information about human health, and abnormal body temperature changes usually indicate poor health. Although body temperature is independent of the environment, the body surface temperature is easily affected by the surrounding environment, bringing challenges to body temperature monitoring equipment. To achieve real-time and sensitive detection of various parts temperature of the human body, researchers have developed many different types of high-sensitivity flexible temperature sensors, perfecting the function of electronic skin, and also proposed many practical applications. This article reviews the current research status of highly sensitive patterned flexible temperature sensors used to monitor body temperature changes. First, commonly used substrates and active materials for flexible temperature sensors have been summarized. Second, patterned fabricating methods and processes of flexible temperature sensors are introduced. Then, flexible temperature sensing performance are comprehensively discussed, including temperature measurement range, sensitivity, response time, temperature resolution. Finally, the application of flexible temperature sensors based on highly delicate patterning are demonstrated, and the future challenges of flexible temperature sensors have prospected.

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Section: Methodsmentioning

confidence: 99%

“…Bionic sensor arrays can scan and perceive threedimensional objects by using structural advantages. [171]. c Fabrication process of the temperature sensors [87].…”

Section: Micro-nano Patterned Fabricationmentioning

confidence: 99%

Section: Micro-nano Patterned Fabricationmentioning

confidence: 99%

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Printable, Highly Sensitive Flexible Temperature Sensors for Human Body Temperature Monitoring: A Review

Chen

et al. 2020

Nanoscale Res Lett

169

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“…Recently, paper based sensors has proved to be of significant potential owing to their characteristics like low cost and investment, flexibility, light weight, disposability, biocompatibility, etc [33]. Many of these concepts were shown on wearable paper based sensors including biosensor [34], strain sensor [35], [36] pressure sensor [37] and and temperature sensor [38]. Successful developments of these sensors show high potential for paper-based sensors in wearable technology.…”

Section: Introductionmentioning

confidence: 99%

Flexible, Highly Sensitive Paper-Based Screen Printed MWCNT/PDMS Composite Breath Sensor for Human Respiration Monitoring

2021

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Accurate measurement and monitoring of respiration is vital in patients affected by severe acute respiratory syndrome coronavirus -2 (SARS-CoV-2). Patients with severe chronic diseases and pneumonia need continuous respiration monitoring and oxygenation support. Existing respiratory sensing techniques require direct contact with the human body along with expensive and heavy Holter monitors for continuous real-time monitoring. In this work, we propose a low-cost, non-invasive and reliable paper-based wearable screen printed sensor for human respiration monitoring as an effective alternative of existing sensing systems. The proposed sensor was fabricated using traditional screen printing of multi-walled carbon nanotubes (MWCNTs) and polydimethylsiloxane (PDMS) composite based interdigitated electrodes on paper substrate. The paper substrate was used as humidity sensing material of the sensor. The hygroscopic nature of paper during inhalation and exhalation causes a change in dielectric constant, which in turn changes the capacitance of the sensor. The composite interdigitated electrode configuration exhibited better response times with a rise time of 1.178s being recorded during exhalation and fall time of 0.88s during inhalation periods. The respiration rate of sensor was successfully examined under various breathing conditions such as normal breathing, deep breathing, workout, oral breathing, nasal breathing, fast breathing and slow breathing by employing it in a wearable mask, a mandatory wearable product during the current COVID-19 pandemic situation.Thus, the above proposed sensor may hold tremendous potential in wearable/flexible healthcare technology with good sensitivity, stability, biodegradability and flexibility at this time of need.

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“…3,4 Carbon nanostructures such as graphene nanoribbon (GNR) and carbon nanotubes (CNTs) are widely used as sensing materials due to their physical dimensions and chemical stability. 5,6 The remarkable optical, mechanical, and electrical properties of CNTs allowed them to be used in various applications. 7,8 For example, in gas sensor applications, CNTs can detect gas molecules at low concentrations, such as the detection of ammonia and hydrogen.…”

Section: Introductionmentioning

confidence: 99%

Airflow-assisted dielectrophoresis to reduce the resistance mismatch in carbon nanotube-based temperature sensors

et al. 2021

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Directly writing flexible temperature sensor with graphene nanoribbons for disposable healthcare devices

Abstract: A flexible temperature sensor is developed by directly writing or mask spraying commonly-used paper with graphene nanoribbon ink. The sensor is ultralow cost, degradable, and highly promising as a disposable device for personal healthcare.

Cited by 51 publications

References 66 publications

Printable, Highly Sensitive Flexible Temperature Sensors for Human Body Temperature Monitoring: A Review

Printable, Highly Sensitive Flexible Temperature Sensors for Human Body Temperature Monitoring: A Review

Flexible, Highly Sensitive Paper-Based Screen Printed MWCNT/PDMS Composite Breath Sensor for Human Respiration Monitoring

Airflow-assisted dielectrophoresis to reduce the resistance mismatch in carbon nanotube-based temperature sensors

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