Journal ArticleDOI
Paper and carbon ink enabled low-cost, eco-friendly, flexible, multifunctional pressure and humidity sensors
Zaihua Duan,Yadong Jiang,Qi Huang,Si Wang,Yang Wang,Hong Pan,Qiuni Zhao,Guangzhong Xie,Xiaosong Du,Huiling Tai +9 more
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TLDR
In this article, the authors proposed two low-cost, eco-friendly, flexible, multifunctional pressure and humidity sensors, which can be used for multiple pressure related contact detections and many humidity related non-contact detections.Abstract:
For a long time, the daily paper and carbon ink have been used for writing and painting. With the development of the electronic technology, they are expected to play new roles in electronic devices. Herein, combining the unique characteristics of the paper (rough surface, hydrophilicity) and carbon ink (conductivity), this work rationally proposed two low-cost, eco-friendly, flexible, multifunctional pressure and humidity sensors. The results show that as-fabricated paper-based (PB) pressure sensor has a good sensitivity of 0.614 kPa−1 in the pressure range of 0–6 kPa. The PB humidity sensor has a large response of ∼2120 (current ratio at 91.5% relative humidity (RH) and 0% RH). The PB pressure sensor is proven to be useful for multiple pressure related contact detections, and the PB humidity sensor can be used for many humidity related non-contact detections. Interestingly, combining the different detecting modes of pressure and humidity sensors, some same detecting functions (e.g. switch, respiratory frequency and speech recognition) are realized from contact to non-contact using PB pressure and humidity sensors, which greatly enhance the wearable comfort. Compared with previous reports, this work demonstrates a much simpler approach without expensive raw materials, toxic reagents and high temperature treatment to achieve outstanding sensing performances of the multifunctional pressure and humidity sensors.read more
Citations
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Recent advances in humidity sensors for human body related humidity detection
TL;DR: In this paper, the authors reviewed and analyzed the recent advances in human body-related (HBR) humidity sensors, including respiratory behavior, speech recognition, skin moisture, non-contact switch, and diaper monitoring.
Journal ArticleDOI
A humidity sensing and respiratory monitoring system constructed from quartz crystal microbalance sensors based on a chitosan/polypyrrole composite film
TL;DR: In this paper, a quartz crystal microbalance (QCM) humidity sensor based on a chitosan/polypyrrole (CS/PPy) composite film was prepared by a facile physical modification method.
Journal ArticleDOI
A do-it-yourself approach to achieving a flexible pressure sensor using daily use materials
TL;DR: In this article, a flexible paper-based capacitive pressure sensor is constructed by using daily use materials such as paper, polyester conductive tape and polyimide tape and thanks to the simplicity of the fabrication method, the proposed PB pressure sensor can be even fabricated via a do-it-yourself approach.
Journal ArticleDOI
Power generation humidity sensor based on primary battery structure
TL;DR: In this article , a simple Cu/NaCl paper/Al power generation (CPG) humidity sensor based on primary battery structure was developed, which can spontaneously output voltage and shows good humidity sensing properties at 41.1-91.5% relative humidity.
Journal ArticleDOI
High performance humidity sensor based on 3D mesoporous Co3O4 hollow polyhedron for multifunctional applications
Yajie Zhang,Yingwei Wu,Zaihua Duan,Bohao Liu,Qiuni Zhao,Zhen Yuan,Shaoxiang Li,Junge Liang,Yadong Jiang,Huiling Tai +9 more
TL;DR: In this article , a 3D hollow mesoporous Co3O4 was successfully prepared by calcining the Co-based zeolitic imidazolate framework-67 (ZIF-67).
References
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A wearable and highly sensitive pressure sensor with ultrathin gold nanowires
Shu Gong,Willem Heinrich Schwalb,Yongwei Wang,Yi Chen,Yue Tang,Jye Si,Bijan Shirinzadeh,Wenlong Cheng +7 more
TL;DR: An efficient, low-cost fabrication strategy to construct a highly sensitive, flexible pressure sensor by sandwiching ultrathin gold nanowire-impregnated tissue paper between two thin polydimethylsiloxane sheets is reported, enabling facile large-area integration and patterning for mapping spatial pressure distribution.
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Highly conductive paper for energy-storage devices
TL;DR: It is suggested that this conductive paper can be a highly scalable and low-cost solution for high-performance energy storage devices and as an excellent lightweight current collector in lithium-ion batteries to replace the existing metallic counterparts.
Journal ArticleDOI
Conductive Fiber‐Based Ultrasensitive Textile Pressure Sensor for Wearable Electronics
Jaehong Lee,Hyukho Kwon,Jungmok Seo,Sera Shin,Ja Hoon Koo,Changhyun Pang,Seungbae Son,Jae Hyung Kim,Yong Hoon Jang,Dae Eun Kim,Taeyoon Lee +10 more
TL;DR: A flexible and sensitive textile-based pressure sensor is developed using highly conductive fibers coated with dielectric rubber materials that exhibits superior sensitivity, very fast response time, and high stability when applied to make smart gloves and clothes that can control machines wirelessly as human-machine interfaces.
Journal ArticleDOI
Lightweight, Superelastic, and Mechanically Flexible Graphene/Polyimide Nanocomposite Foam for Strain Sensor Application.
Yuyang Qin,Qingyu Peng,Yujie Ding,Zaishan Lin,Chunhui Wang,Ying Li,Fan Xu,Jianjun Li,Ye Yuan,Xiaodong He,Yibin Li +10 more
TL;DR: A facile approach of transforming the mechanically fragile reduced graphene oxide (rGO) aerogel into superflexible 3D architectures by introducing water-soluble polyimide (PI), which exhibit low density, excellent flexibility, superelasticity with high recovery rate, and extraordinary reversible compressibility.
Journal ArticleDOI
Graphene-Paper Pressure Sensor for Detecting Human Motions.
Lu-Qi Tao,Kun-Ning Zhang,He Tian,Ying Liu,Dan-Yang Wang,Yuan-Quan Chen,Yi Yang,Tian-Ling Ren +7 more
TL;DR: A graphene-paper pressure sensor that shows excellent performance in the range of 0-20 kPa is proposed that will have great potentials for smart wearable devices to achieve health monitoring and motion detection.