Performance of the highly sensitive humidity sensor constructed with nanofibrillated cellulose/graphene oxide/polydimethylsiloxane aerogel via freeze drying

This work presents a nanocellulose-based humidity sensor with high sensitivity, remarkable reproducibility and rapid response/recovery behavior fabricated via freeze drying.

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Synthesized of Highly Sensitive Tin (IV)-Doped Zinc Oxide Humidity Sensor

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1109.559 ◽

2015 ◽

Vol 1109 ◽

pp. 559-563

Author(s):

Ahmad Syakirin Ismail ◽

Mohd Firdaus Malek ◽

Muhammad Amir Ridhwan Abdullah ◽

Mohamad Hafiz Mamat ◽

M. Rusop

Keyword(s):

Zinc Oxide ◽

Recovery Time ◽

Humidity Sensor ◽

Sol Gel ◽

High Sensitivity ◽

Average Diameter ◽

Undoped Sample ◽

Immersion Method ◽

Response Recovery ◽

Highly Sensitive

High sensitivity Tin (IV) (Sn) - doped zinc oxide (ZnO) humidity sensor was deposited using sol-gel immersion method. The Sn-doped sample was deposited on glass substrate and undoped sample was also prepared to seem the improvement made through doping process. The analyses showed that the sensor’s morphology has become more porous and having lower average diameter of nanorods, high conductivity and higher response, recovery time, and sensitivity. The sensitivity of the sensor increased from 2 to 4 by doping with Sn.

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A highly sensitive humidity sensor based on an aggregation-induced emission luminogen-appended hygroscopic polymer microresonator

Materials Chemistry Frontiers ◽

10.1039/d0qm00722f ◽

2021 ◽

Author(s):

Airong Qiagedeer ◽

Hiroshi Yamagishi ◽

Minami Sakamoto ◽

Hanako Hasebe ◽

Fumitaka Ishiwari ◽

...

Keyword(s):

Humidity Sensor ◽

High Sensitivity ◽

Aggregation Induced Emission ◽

Highly Sensitive ◽

Self Assembled

A self-assembled microsphere resonator, comprising a hygroscopic polymer with aggregation-induced emission luminogen pendants, can sense humidity with high sensitivity and repeatability.

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High-Sensitivity Wearable and Flexible Humidity Sensor Based on Graphene Oxide/Non-Woven Fabric for Respiration Monitoring

Langmuir ◽

10.1021/acs.langmuir.0c01315 ◽

2020 ◽

Vol 36 (32) ◽

pp. 9443-9448 ◽

Cited By ~ 1

Author(s):

Yamei Wang ◽

Liwen Zhang ◽

Zhenwei Zhang ◽

Pengyuan Sun ◽

Huawei Chen

Keyword(s):

Graphene Oxide ◽

Humidity Sensor ◽

High Sensitivity ◽

Woven Fabric ◽

Respiration Monitoring

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A Rapid Response/Recovery Ribbon‐like Hydroxyapatite Humidity Sensor with Loose Spatial Structure

ChemistrySelect ◽

10.1002/slct.201903022 ◽

2019 ◽

Vol 4 (43) ◽

pp. 12643-12648

Author(s):

Yuwei Gu ◽

Ziheng Li ◽

Mingxu Sun ◽

Shuang Wu ◽

Xinchen Wang

Keyword(s):

Spatial Structure ◽

Humidity Sensor ◽

Rapid Response ◽

Response Recovery

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Wrinkled reduced graphene oxide nanosheets for highly sensitive and easy recoverable NH3 gas detector

RSC Advances ◽

10.1039/c4ra08811e ◽

2014 ◽

Vol 4 (87) ◽

pp. 46930-46933 ◽

Cited By ~ 21

Author(s):

Su Zhang ◽

Di Zhang ◽

Vitaly I. Sysoev ◽

Olga V. Sedelnikova ◽

Igor P. Asanov ◽

...

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

High Sensitivity ◽

Graphite Powder ◽

Gas Detection ◽

Graphene Oxide Nanosheets ◽

Chemical Exfoliation ◽

Reduced Graphene ◽

Highly Sensitive ◽

Gas Detector

Highly wrinkled reduced graphene oxide nanosheets were prepared by chemical exfoliation of ball-milled graphite powder. This material showed high sensitivity and simple recovery ability for NH3 gas detection.

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Highly sensitive humidity sensor based on graphene oxide foam

Applied Physics Letters ◽

10.1063/1.4996603 ◽

2017 ◽

Vol 111 (15) ◽

pp. 153101 ◽

Cited By ~ 19

Author(s):

Kai-Lun Zhang ◽

Zhi-Ling Hou ◽

Bao-Xun Zhang ◽

Quan-Liang Zhao

Keyword(s):

Graphene Oxide ◽

Humidity Sensor ◽

Highly Sensitive

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A novel humidity sensor based on Na2Ti3O7 nanowires with rapid response-recovery

Sensors and Actuators B Chemical ◽

10.1016/j.snb.2008.08.042 ◽

2008 ◽

Vol 135 (1) ◽

pp. 317-321 ◽

Cited By ~ 33

Author(s):

Yanyan Zhang ◽

Wuyou Fu ◽

Haibin Yang ◽

Minghui Li ◽

Yixing Li ◽

...

Keyword(s):

Humidity Sensor ◽

Rapid Response ◽

Response Recovery

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A Highly Sensitive Amperometric Glutamate Oxidase Microbiosensor Based on a Reduced Graphene Oxide/Prussian Blue Nanocube/Gold Nanoparticle Composite Film-Modified Pt Electrode

Sensors ◽

10.3390/s20102924 ◽

2020 ◽

Vol 20 (10) ◽

pp. 2924 ◽

Cited By ~ 2

Author(s):

Jing Chen ◽

Qiwen Yu ◽

Wei Fu ◽

Xing Chen ◽

Quan Zhang ◽

...

Keyword(s):

Graphene Oxide ◽

Prussian Blue ◽

Reduced Graphene Oxide ◽

High Sensitivity ◽

Small Dimension ◽

Simple Method ◽

Promising Tool ◽

Glutamate Oxidase ◽

Reduced Graphene ◽

Highly Sensitive

A simple method that relies only on an electrochemical workstation has been investigated to fabricate a highly sensitive glutamate microbiosensor for potential neuroscience applications. In this study, in order to develop the highly sensitive glutamate electrode, a 100 µm platinum wire was modified by the electrochemical deposition of gold nanoparticles, Prussian blue nanocubes, and reduced graphene oxide sheets, which increased the electroactive surface area; and the chitosan layer, which provided a suitable environment to bond the glutamate oxidase. The optimization of the fabrication procedure and analytical conditions is described. The modified electrode was characterized using field emission scanning electron microscopy, impedance spectroscopy, and cyclic voltammetry. The results exhibited its excellent sensitivity for glutamate detection (LOD = 41.33 nM), adequate linearity (50 nM–40 µM), ascendant reproducibility (RSD = 4.44%), and prolonged stability (more than 30 repetitive potential sweeps, two-week lifespan). Because of the important role of glutamate in neurotransmission and brain function, this small-dimension, high-sensitivity glutamate electrode is a promising tool in neuroscience research.

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A Compact Double-Folded Substrate Integrated Waveguide Re-Entrant Cavity for Highly Sensitive Humidity Sensing

Sensors ◽

10.3390/s19153308 ◽

2019 ◽

Vol 19 (15) ◽

pp. 3308 ◽

Cited By ~ 2

Author(s):

Zhihua Wei ◽

Jie Huang ◽

Jing Li ◽

Junshan Li ◽

Xuyang Liu ◽

...

Keyword(s):

Humidity Sensor ◽

High Sensitivity ◽

Substrate Integrated Waveguide ◽

Humidity Sensing ◽

Food Industries ◽

High Q ◽

Sensing Applications ◽

Compact Size ◽

Highly Sensitive ◽

Humidity Chamber

In this study, an ultra-compact humidity sensor based on a double-folded substrate integrated waveguide (SIW) re-entrant cavity was proposed and analyzed. By folding a circular re-entrant cavity twice along its two orthogonally symmetric planes, the designed structure achieved a remarkable size reduction (up to 85.9%) in comparison with a conventional TM010-mode circular SIW cavity. The operating principle of the humidity sensor is based on the resonant method, in other words, it utilizes the resonant properties of the sensor as signatures to detect the humidity condition of the ambient environment. To this end, a mathematical model quantitatively relating the resonant frequency of the sensor and the relative humidity (RH) level was established according to the cavity perturbation theory. The sensing performance of the sensor was experimentally validated in a RH range of 30%–80% by using a humidity chamber. The measured absolute sensitivity of the sensor was calculated to be 135.6 kHz/%RH, and the corresponding normalized sensitivity was 0.00627%/%RH. It was demonstrated that our proposed sensor not only has the merits of compact size and high sensitivity, but also benefits from a high Q-factor and ease of fabrication and integration. These advantages make it an excellent candidate for humidity sensing applications in various fields such as the agricultural, pharmaceutical, and food industries.

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