Enhanced Relative Humidity Sensing Performance Using TiO2 Loaded SiO2 Nanocomposite

2016 ◽  
Vol 5 (3) ◽  
pp. 234-239 ◽  
Author(s):  
Vandna Chaudhary ◽  
Ritu Malik ◽  
Vijay K. Tomer ◽  
S. P. Nehra ◽  
Surender Duhan
Keyword(s):  
Relative Humidity ◽  
Humidity Sensing ◽  
Sensing Performance

scholarly journals Enhanced Capacitive Humidity Sensing Performance at Room Temperature via Hydrogen Bonding of Cyanopyridone-Based Oligothiophene Donor

Chemosensors ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 320
Author(s):  
Salman Ali ◽  
Mohammed A. Jameel ◽  
Christopher J. Harrison ◽  
Akhil Gupta ◽  
Richard A. Evans ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Relative Humidity ◽  
Room Temperature ◽  
High Sensitivity ◽  
Vital Role ◽  
Humidity Sensing ◽  
Force Microscopy ◽  
Long Term Stability ◽  
Atomic Force ◽  
Sensing Performance

Cyanopyridone-based oligothiophene donors with both hydrophobic and hydrophilic characters have been evaluated as active layers within simple capacitive devices for humidity sensing at room temperature. Surface studies using atomic force microscopy revealed a self-assembled nanofibrous network with a thin needle-like structure for the terminal hydroxy example (CP6), devoid in the methyl example (CP1). The sensing performance of each sensor was investigated over a broad range of relative humidity levels as a function of capacitance at room temperature. The sensor CP6 demonstrated favourable features such as high sensitivity (12.2 pF/%RH), quick response/recovery (13 s/20.7 s), wide working range of relative humidity (10%–95% RH), low hysteresis (0.57%), outstanding recyclability, and excellent long-term stability. From the results obtained, hydrophilicity and hydrogen bonding appear to play a vital role in enhancing humidity sensing performance, leading to possible new design directions for simple organic semiconductor-based sensors.

Synthesis of ZnO/NiO hollow spheres and their humidity sensing performance

2021 ◽  
pp. 160487
Author(s):  
Xiu-Juan Xie ◽  
Ren-Jun Si ◽  
Jun Zheng ◽  
Kai Wei ◽  
Xiu-Ying Zheng ◽  
...  
Keyword(s):  
Hollow Spheres ◽  
Humidity Sensing ◽  
Sensing Performance

Characterization of an ORMOCER®-coated FBG sensor for relative humidity sensing

Measurement ◽  
2021 ◽  
Vol 171 ◽  
pp. 108851
Author(s):  
Jun-Yi Guo ◽  
Bin Shi ◽  
Meng-Ya Sun ◽  
Cheng-Cheng Zhang ◽  
Guang-Qing Wei ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Humidity Sensing ◽  
Fbg Sensor

The enhancement of humidity sensing performance based on Eu-doped ZnO

2019 ◽  
Vol 19 (2) ◽  
pp. 82-88 ◽  
Author(s):  
Shuguo Yu ◽  
Hongyan Zhang ◽  
Cunchong Lin ◽  
Mingjin Bian
Keyword(s):  
Humidity Sensing ◽  
Doped Zno ◽  
Sensing Performance

scholarly journals Low-Humidity Sensing Properties of Multi-Layered Graphene Grown by Chemical Vapor Deposition

Sensors ◽  
2020 ◽  
Vol 20 (11) ◽  
pp. 3174 ◽  
Author(s):  
Filiberto Ricciardella ◽  
Sten Vollebregt ◽  
Tiziana Polichetti ◽  
Pasqualina M. Sarro ◽  
Georg S. Duesberg
Keyword(s):  
Chemical Vapor Deposition ◽  
Relative Humidity ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Morphological Properties ◽  
Humidity Sensing ◽  
Sensing Properties ◽  
Force Microscopy ◽  
Sensing Material ◽  
Low Humidity

Humidity sensing is fundamental in some applications, as humidity can be a strong interferent in the detection of analytes under environmental conditions. Ideally, materials sensitive or insensitive towards humidity are strongly needed for the sensors used in the first or second case, respectively. We present here the sensing properties of multi-layered graphene (MLG) upon exposure to different levels of relative humidity. We synthesize MLG by chemical vapor deposition, as shown by Raman spectroscopy, Atomic Force Microscopy (AFM) and Scanning Electron Microscopy (SEM). Through an MLG-based resistor, we show that MLG is scarcely sensitive to humidity in the range 30%–70%, determining current variations in the range of 0.005%/%relative humidity (RH) well below the variation induced by other analytes. These findings, due to the morphological properties of MLG, suggest that defective MLG is the ideal sensing material to implement in gas sensors operating both at room temperature and humid conditions.

Relative Humidity Sensing using PANI/PVA integrated with Feedback Oscillator Circuit

2019 ◽  
Author(s):  
Mohammad Abdolrazzaghi ◽  
Faissal Hariri ◽  
Marco Chu ◽  
Hani Naguib ◽  
Mojgan Daneshmand
Keyword(s):  
Relative Humidity ◽  
Humidity Sensing ◽  
Oscillator Circuit
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