Thermally Stable, Biocompatible, and Flexible Organic Field‐Effect Transistors and Their Application in Temperature Sensing Arrays for Artificial Skin

Wu, Xiaohan; Ma, Yan; Zhang, Guoqian; Chu, Yingli; Du, Juan; Zhang, Yin; Li, Zhuo; Duan, Yourong; Fan, Zhongyong; Huang, Jia

doi:10.1002/adfm.201404535

Cited by 194 publications

(158 citation statements)

References 41 publications

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“…Some groups have reported fl exible and stretchable temperature sensors based on Si, [ 88 ] Si diodes, [ 5,65 ] organic diodes, [ 48 ] colorimetric temperature indicators, [ 87 ] and polar groups of dielectric-induced charge-trapping. [ 19 ] Kim et al [ 65 ] and Webb et al [ 5 ] fabricated a Si diode (PIN) based on a fl exible and stretchable temperature sensor array for wound healing and skin-temperature monitoring. Someya et al [ 48 ] demonstrated a temperature-sensor array based on a fl exible organic thin-fi lm transistor (OTFT) for e-skin application.…”

Section: Reviewmentioning

confidence: 99%

“…These sensor arrays can be also used to monitor the wound-healing process, cancer screening, core-body-temperature assessments, and other types of clinical procedures. Also, Wu et al [ 19 ] developed a fl exible temperaturesensing array based on an OFET for application as artifi cial skin. By applying a three-arm stereocomplex poly(lactic-co -glycolic acid), the PLA (tascPLA) served as the gate dielectric in an OFET.…”

Section: Reviewmentioning

confidence: 99%

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Flexible and Stretchable Physical Sensor Integrated Platforms for Wearable Human‐Activity Monitoringand Personal Healthcare

2016

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Flexible and stretchable physical sensors that can measure and quantify electrical signals generated by human activities are attracting a great deal of attention as they have unique characteristics, such as ultrathinness, low modulus, light weight, high flexibility, and stretchability. These flexible and stretchable physical sensors conformally attached on the surface of organs or skin can provide a new opportunity for human-activity monitoring and personal healthcare. Consequently, in recent years there has been considerable research effort devoted to the development of flexible and stretchable physical sensors to fulfill the requirements of future technology, and much progress has been achieved. Here, the most recent developments of flexible and stretchable physical sensors are described, including temperature, pressure, and strain sensors, and flexible and stretchable sensor-integrated platforms. The latest successful examples of flexible and stretchable physical sensors for the detection of temperature, pressure, and strain, as well as their novel structures, technological innovations, and challenges, are reviewed first. In the next section, recent progress regarding sensor-integrated wearable platforms is overviewed in detail. Some of the latest achievements regarding self-powered sensor-integrated wearable platform technologies are also reviewed. Further research direction and challenges are also proposed to develop a fully sensor-integrated wearable platform for monitoring human activity and personal healthcare in the near future.

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Section: Reviewmentioning

confidence: 99%

Section: Reviewmentioning

confidence: 99%

Flexible and Stretchable Physical Sensor Integrated Platforms for Wearable Human‐Activity Monitoringand Personal Healthcare

2016

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“…Besides, silicon (Si) nanoribbon and Si diodes [151], thermochromic liquid crystals [152], and three-arm stereocomplex polylactide based organic FETs [153], have been used for the fabrication of flexible temperature sensors.…”

Section: Flexible Temperature Sensorsmentioning

confidence: 99%

Advanced carbon materials for flexible and wearable sensors

et al. 2017

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Flexible and wearable sensors have drawn extensive concern due to their wide potential applications in wearable electronics and intelligent robots. Flexible sensors with high sensitivity, good flexibility, and excellent stability are highly desirable for monitoring human biomedical signals, movements and the environment. The active materials and the device structures are the keys to achieve high performance. Carbon nanomaterials, including carbon nanotubes (CNTs), graphene, carbon black and carbon nanofibers, are one of the most commonly used active materials for the fabrication of high-performance flexible sensors due to their superior properties. Especially, CNTs and graphene can be assembled into various multi-scaled macroscopic structures, including one dimensional fibers, two dimensional films and three dimensional architectures, endowing the facile design of flexible sensors for wide practical applications. In addition, the hybrid structured carbon materials derived from natural bio-materials also showed a bright prospect for applications in flexible sensors. This review provides a comprehensive presentation of flexible and wearable sensors based on the above various carbon materials. Following a brief introduction of flexible sensors and carbon materials, the fundamentals of typical flexible sensors, such as strain sensors, pressure sensors, temperature sensors and humidity sensors, are presented. Then, the latest progress of flexible sensors based on carbon materials, including the fabrication processes, performance and applications, are summarized. Finally, the remaining major challenges of carbon-based flexible electronics are discussed and the future research directions are proposed. [56,57], have been used as the active components for the fabrication of flexible sensors. Among these materials, metal NPs can be used to fabricate flexible sensors with high sensitivity, but the sensing range and stretchability of these sensors are limited [58]. Besides, due to the limited chemical stability and reproducibility of metal nanowires, it is challenging to fabricate stable sensors using metal nanowires [10]. Similarly, conductive polymers with poor stability and conductivity are also difficult to be used for the fabrication of high-performance sensors [59]. In contrast, carbon materials are one of the most commonly investigated materials, especially CNTs and graphene (including graphene oxide (GO) and reduced graphene oxide (rGO)), due to their remarkable mechanical, electrical and thermal properties. To implement macroscopic applications, CNTs and graphene with superior properties in microscopic level should be converted into macroscopic functional assemblies, such as one dimensional (1D) fibers or yarns [60,61], two dimensional (2D) films or sheets [62,63], three dimensional (3D) architectures [64][65][66] (Fig. 1). The multi-scaled macroscopic carbon nanomaterials endow the flexible sensors with high sensitivity, excellent flexibility and good stability as well as desired configurations. Also, lo...

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“…Polylactic acid (PLA) is a commonly used biodegradable plastic material (Tokiwa et al 2009;Vanstrom 2012) with good biocompatibility, gloss, transparency, thermal stability, and other characteristics (Cui et al 2007;Jung 2008;Wu et al 2015). Therefore, the application of this biofriendly material has grown extensively (Zhao and Gu 2014).…”

Section: Introductionmentioning

confidence: 99%

Effect of Polyvinyl Alcohol Treatment on Mechanical Properties of Bamboo/Polylactic Acid Composites

Yang¹,

Ma²,

Tang³

et al. 2018

BioResources

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Polylactic acid (PLA) and bamboo fiber are both green and biodegradable materials. However, the bonding of PLA and bamboo fiber is poor, which limits the physical properties of paper. The effects of polyvinyl alcohol (PVOH) on PLA fiber/bamboo fiber composites were studied by measuring the tensile strength, tear resistance, and breaking length of the paper. In addition, the morphology of paper comprised of PLA fiber and bamboo fiber were investigated by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). The tensile index, tear index, and breaking length of paper made with the 4 wt% PVOH-treated bamboo fiber and the untreated PLA fiber compared favorably with the paper made of the untreated bamboo fiber and PLA fiber increased 21.0%, 8.6%, and 20.8%, respectively. However, compared with the paper made of the untreated bamboo fiber and PLA fiber, the tensile index, tear index, and breaking length of the paper made with the treated PLA fiber and the treated bamboo fiber with 4 wt% PVOH solution were dramatically reduced by 30%, 18%, and 30%, respectively.

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Thermally Stable, Biocompatible, and Flexible Organic Field‐Effect Transistors and Their Application in Temperature Sensing Arrays for Artificial Skin

Cited by 194 publications

References 41 publications

Flexible and Stretchable Physical Sensor Integrated Platforms for Wearable Human‐Activity Monitoringand Personal Healthcare

Flexible and Stretchable Physical Sensor Integrated Platforms for Wearable Human‐Activity Monitoringand Personal Healthcare

Advanced carbon materials for flexible and wearable sensors

Effect of Polyvinyl Alcohol Treatment on Mechanical Properties of Bamboo/Polylactic Acid Composites

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