Improved Response/Recovery Time and Sensitivity of SnSe Nanosheet Humidity Sensor by LiCl Incorporation

2020 ◽  
Vol 6 (5) ◽  
pp. 1901330
Author(s):  
Kaimin Zhu ◽  
Yong Tang ◽  
Xiangli Zhong ◽  
Li Xiong ◽  
Yong Zhang ◽  
...  
Keyword(s):  
Recovery Time ◽  
Humidity Sensor ◽  
Response Recovery

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

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.

Highly responsive and stable Y3+ doped NiMg–ferrite thick films as an efficient humidity sensor

2016 ◽  
Vol 40 (2) ◽  
pp. 1720-1728 ◽  
Author(s):  
Pratibha Rao ◽  
Rajeev C. Chikate ◽  
Sunita Bhagwat
Keyword(s):  
Thick Film ◽  
Recovery Time ◽  
Humidity Sensor ◽  
Thick Films ◽  
Fast Response ◽  
Response Recovery ◽  
Hysteresis Characteristics ◽  
Screen Printed

Fast response–recovery time with less hysteresis characteristics exhibited by a screen printed Ni0.7Mg0.3Y0.1Fe1.9O4 thick film humidity sensor.

Synthesis of CuO–CdS composite nanowires and their ultrasensitive ethanol sensing properties

2019 ◽  
Vol 6 (1) ◽  
pp. 238-247 ◽  
Author(s):  
Nan Zhang ◽  
Xiaohui Ma ◽  
Yanyang Yin ◽  
Yu Chen ◽  
Chuannan Li ◽  
...  
Keyword(s):  
Recovery Time ◽  
Solvothermal Method ◽  
Operating Temperature ◽  
Average Diameter ◽  
One Dimension ◽  
Sensing Properties ◽  
Response Recovery ◽  
Ethanol Sensing

One dimension CuO/CdS composites with an average diameter of 30 nm were synthesized by a solvothermal method. The operating temperature of the sensors is 182 °C, and their responses were improved by 6 times. The ultrafast response–recovery time was obtained.

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

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

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

2008 ◽  
Vol 135 (1) ◽  
pp. 317-321 ◽  
Author(s):  
Yanyan Zhang ◽  
Wuyou Fu ◽  
Haibin Yang ◽  
Minghui Li ◽  
Yixing Li ◽  
...  
Keyword(s):  
Humidity Sensor ◽  
Rapid Response ◽  
Response Recovery

scholarly journals Design and Fabrication of MEMS Humidity Sensor using Graphene Oxide

2019 ◽  
Vol 9 (2S4) ◽  
pp. 532-535
Keyword(s):  
Graphene Oxide ◽  
Spin Coating ◽  
Recovery Time ◽  
Humidity Sensor ◽  
Graphite Powder ◽  
Comsol Multiphysics ◽  
The Earth ◽  
Cantilever Structure ◽  
Conventional Type ◽  
Better Than

This work describes the consequence of graphene oxide on the paddle shaped cantilever structure for the measurement of humidity in oil condition monitoring .The oxides present in the graphene has an significant effect in absorbing the content of water that available in the earth. The model for humidity sensor is designed and simulated using comsol Multiphysics. Various structures were simulated and the best structure is chosen for designing the humidity sensor. Graphene oxide was chemically synthesized from graphite powder. Thin film of GO was deposited on Aluminium substrate using spin coating. Various materials were analysed and the best material is coated on the substrate for humidity sensing. The samples were characterized using Scanning electron Microscope and Xray Diffraction methods. The sensitivity is ten times better than the conventional humidity sensor. The response time is fast less than ¼ of the conventional type. The recovery time of the graphene oxide based humidity sensor is also less than ½ of the conventional one.

Ultrafast Response Humidity Sensor Based on Electrospun Porous BaTiO3 Nanofibers

2013 ◽  
Vol 319 ◽  
pp. 43-48 ◽  
Author(s):  
Hong Di Zhang ◽  
Chen Hao Sheng ◽  
Bin Sun ◽  
Yun Ze Long
Keyword(s):  
Electron Microscope ◽  
Recovery Time ◽  
Room Temperature ◽  
Humidity Sensor ◽  
Humidity Sensing ◽  
X Ray ◽  
Transmission Electron ◽  
Porous Microstructure ◽  
Humidity Sensing Properties ◽  
Scanning Electron

Nanocrystalline and porous barium titanate (BaTiO3) nanofibers with diameter 200-400 nm were synthesized via electrospinning and followed calcinations. The morphology and microstructure of the nanofibers were characterized using field emission scanning electron microscope, X-ray diffractometer and transmission electron microscope, respectively. And the electrical and humidity sensing properties of the nanofibers were also measured. The results reveal that the BaTiO3 nanofibers have a conductivity of about 0.3 S/cm, and show an ultrafast response time (~0.7 s) and a recovery time (~0.4 s) to humidity at room temperature. In addition, the sensing mechanism was also discussed briefly based on its nanocrystalline and porous microstructure of the electrospun material.

Using Palladium Nanocubes on ZnO Nanostructures in Hydrogen Gas Sensor for Fast Response and Recovery Time

2021 ◽  
Vol 21 (4) ◽  
pp. 2495-2499
Author(s):  
Hoang Si Hong ◽  
Tran Vinh Hoang
Keyword(s):  
Gas Sensor ◽  
Recovery Time ◽  
Fast Response ◽  
Hydrogen Gas ◽  
Zno Nanostructures ◽  
Response Recovery ◽  
Sensor Structure ◽  
Recovery Times ◽  
Response And Recovery ◽  
Robust Sensing

We developed a novel sensor structure by synthesizing Pd nanocubes (NCs) decorated on ZnO nanostructures (NSs) applied to resistive-type H2 gas sensor with micro-length in sensing channel. The ZnO NSs were selectively grown between micro-size finger-like interdigital electrodes through microelectromechanical technology. The novel H2 sensor structure with the sensing channel was reduced to micro-size by this proposed method to obtain a sensor with fast response/recovery time. The as-prepared structure exhibited robust sensing performance with a response of 11% at optimal temperature of 150 °C, good linearity, and fast response/recovery time within 10 s. The speed of chemisorption through the diffusion pathway in Pd NCs combined with micro-length in sensing channel in sensor showed fast response and recovery times of 9 and 15 s, respectively, toward 10,000 ppm (1%) H2 at 150 °C. The result showed approximate linearity response in H2 concentration range of 5÷10,000 ppm and a large operating temperature range from room temperature to 200 °C.

Nitrogen Dioxide and Acetone Sensors Based on Iron Oxide Nanoparticles

2014 ◽  
Vol 605 ◽  
pp. 318-321 ◽  
Author(s):  
Jan Ivanco ◽  
Stefan Luby ◽  
Roberto Rella ◽  
Maria G. Manera ◽  
Monika Benkovicova ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Detection Limit ◽  
Nitrogen Dioxide ◽  
Iron Oxide Nanoparticles ◽  
Recovery Time ◽  
Dynamic Properties ◽  
Oxide Nanoparticles ◽  
Langmuir Blodgett ◽  
Response Recovery ◽  
Canine Detection

The Fe2O3 and CoFe2O4 nanoparticle-based Langmuir-Blodgett lms for sensingof nitrogen dioxide (NO2) and acetone vapours have been explored. Both the sensitivity of thechemiresistors and dynamic properties, such as the response/recovery time, have been probed independence of the number of nanoparticle monolayers and working temperatures. The responseof 23 at the NO2 concentration of 1 ppm has been monitored suggesting the pertinent sensitivityin the deep sub-ppm range, i.e. approaching the canine detection limit, and likewise implyingthe supposable detection of nitrate-based explosives.

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