Highly sensitive and wide-detection range pressure sensor constructed on a hierarchical-structured conductive fabric as a human–machine interface

Chen, Tao; Zhang, Shaohui; Lin, Qihang; Wang, Mingjiong; Yang, Zhan; Zhang, Yunlin; Wang, Fengxia; Sun, Lining

doi:10.1039/d0nr05976e

Cited by 41 publications

(18 citation statements)

References 61 publications

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“…Response and recovery times of 260 and 30 ms, respectively, were recorded while applying and releasing an approximate pressure of 1.8 kPa. It should be noted that the performance of oCVD PEDOT sensors is comparable to previously reported resistive devices based on conductive polymers (table S1) (34)(35)(36)(37)(38)(39)(40)(41)(42)(43)(44)(45)(46)(47), even without any additives or sophisticated device structure in our sensors.…”

Section: Wearable Sensors Using Ocvd Pedotsupporting

confidence: 86%

Binder-free printed PEDOT wearable sensors on everyday fabrics using oxidative chemical vapor deposition

et al. 2021

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Polymeric sensors on fabrics have vast potential toward the development of versatile applications, particularly when the ready-made wearable or fabric can be directly coated. However, traditional coating approaches, such as solution-based methods, have limitations in achieving uniform and thin films because of the poor surface wettability of fabrics. Herein, to realize a uniform poly(3,4-ethylenedioxythiophene) (PEDOT) layer on various everyday fabrics, we use oxidative chemical vapor deposition (oCVD). The oCVD technique is a unique method capable of forming patterned polymer films with controllable thicknesses while maintaining the inherent advantages of fabrics, such as exceptional mechanical stability and breathability. Utilizing the superior characteristics of oCVD PEDOT, we succeed in fabricating blood pressure-and respiratory rate-monitoring sensors by directly depositing and patterning PEDOT on commercially available disposable gloves and masks, respectively. Those results are expected to pave efficient and facile ways for skin-compatible and affordable sensors for personal health care monitoring.

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Section: Wearable Sensors Using Ocvd Pedotsupporting

confidence: 86%

Binder-free printed PEDOT wearable sensors on everyday fabrics using oxidative chemical vapor deposition

et al. 2021

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“…In‐situ strategies for producing nanocellulose‐based composites have been used extensively for EES specifically, which mainly includes two methods: 1) in‐situ one‐step growth of other materials on nanocellulose; 2) in‐situ multistep generation of other materials on nanocellulose. The in‐situ one‐step method primarily concerns the direct polymerization or growth of compounds (including nanoparticles, [ 108 ] nanowires, [ 109 ] nanoplates, [ 110 ] nanoflowers, [ 111 ] etc.) on an existing nanocellulose substrate and with subsequent development into the desired materials with different properties.…”

Section: Preparation and Structural Engineering Of Nanocellulose‐based Compositesmentioning

confidence: 99%

Advanced Nanocellulose‐Based Composites for Flexible Functional Energy Storage Devices

et al. 2021

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With the increasing demand for wearable electronics (such as smartwatch equipment, wearable health monitoring systems, and human–robot interface units), flexible energy storage systems with eco‐friendly, low‐cost, multifunctional characteristics, and high electrochemical performances are imperative to be constructed. Nanocellulose with sustainable natural abundance, superb properties, and unique structures has emerged as a promising nanomaterial, which shows significant potential for fabricating functional energy storage systems. This review is intended to provide novel perspectives on the combination of nanocellulose with other electrochemical materials to design and fabricate nanocellulose‐based flexible composites for advanced energy storage devices. First, the unique structural characteristics and properties of nanocellulose are briefly introduced. Second, the structure–property–application relationships of these composites are addressed to optimize their performances from the perspective of processing technologies and micro/nano‐interface structure. Next, the recent specific applications of nanocellulose‐based composites, ranging from flexible lithium‐ion batteries and electrochemical supercapacitors to emerging electrochemical energy storage devices, such as lithium‐sulfur batteries, sodium‐ion batteries, and zinc‐ion batteries, are comprehensively discussed. Finally, the current challenges and future developments in nanocellulose‐based composites for the next generation of flexible energy storage systems are proposed.

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“…The all-fiber-based pressure sensor has achieved an ultrahigh sensitivity of 6554 kPa –1 and is able to be tested in the range of 0–60 kPa. Our work is also outstanding compared to the reported piezoresistive pressure sensors with fiber network structure as shown in Figure h. ,− ,,,,,− The materials and sensing performance of the recently reported piezoresistive pressure sensors based on the fiber network structure is listed in Table S3.…”

Section: Resultsmentioning

confidence: 99%

All-Nanofiber Network Structure for Ultrasensitive Piezoresistive Pressure Sensors

Zhou

Zhao

Tao

et al. 2022

ACS Appl. Mater. Interfaces

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Sensing materials with fiber structures are excellent candidates for the fabrication of flexible pressure sensors due to their large specific surface area and abundant contact points. Here, an ultrathin, flexible piezoresistive pressure sensor that consists of a multilayer nanofiber network structure prepared via a simple electrospinning technique is reported. The ultrathin sensitive layer is composite nanofiber films composed of poly (3,4-ethylenedioxythiophene):poly (styrenesulfonate) and polyamide 6 (PEDOT:PSS/PA6) prepared by simultaneous electrospinning. PEDOT:PSS conductive fibers and PA6 elastic fibers are interwoven to form a multilayer network structure that can achieve ultrahigh sensitivity by forming a wealth of contact points during loading. In particular, gold-deposited PA6 fibers as upper and lower flexible electrodes can effectively increase the initial resistance. Due to this special fiber electrode structure, the sensor is able to generate a large electrical signal variability when subjected to a weak external force. The devices with different sensing properties can be obtained by controlling the electrospinning time. The sensor based on the PEDOT:PSS/PA6 nanofiber network has high sensitivity (6554.6 kPa −1 at 0−1.4 kPa), fast response time (53 ms), and wide detection range (0−60 kPa). Significantly, the device maintains ultrahigh sensitivity when cyclically loaded over 10,000 cycles at 5 kPa, which makes it have great prospects for applications in human health monitoring and motion monitoring.

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Highly sensitive and wide-detection range pressure sensor constructed on a hierarchical-structured conductive fabric as a human–machine interface

Abstract: A novel hierarchical conductive fabric-based wearable interface is proposed to control the motion of an unmanned aerial vehicle.

Cited by 41 publications

References 61 publications

Binder-free printed PEDOT wearable sensors on everyday fabrics using oxidative chemical vapor deposition

Binder-free printed PEDOT wearable sensors on everyday fabrics using oxidative chemical vapor deposition

Advanced Nanocellulose‐Based Composites for Flexible Functional Energy Storage Devices

All-Nanofiber Network Structure for Ultrasensitive Piezoresistive Pressure Sensors

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