A Promising Surface Acoustic Wave Humidity Sensor Based on Multi-Walled Carbon Nanotubes/Nafion Composite Film for Low Humidity Detection

2011 ◽  
Vol 9 (5) ◽  
pp. 1606-1611 ◽  
Author(s):  
Sheng Lei ◽  
Dajing Chen ◽  
Wei Chen ◽  
Yuquan Chen
Keyword(s):  
Carbon Nanotubes ◽  
Acoustic Wave ◽  
Composite Film ◽  
Surface Acoustic Wave ◽  
Humidity Sensor ◽  
Multi Walled Carbon Nanotubes ◽  
Low Humidity ◽  
Walled Carbon Nanotubes

Optical Humidity Sensor Based on Tapered Fiber with Multi-walled Carbon Nanotubes Slurry

2017 ◽  
Vol 6 (1) ◽  
pp. 97 ◽  
Author(s):  
Habibah Mohamed ◽  
Ninik Irawati ◽  
Fauzan Ahmad ◽  
Mohd Haniff Ibrahim ◽  
Sumiaty Ambran ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Humidity Sensor ◽  
Fused Deposition Modeling ◽  
Acrylonitrile Butadiene Styrene ◽  
Performance Comparison ◽  
Tapered Fiber ◽  
Fused Deposition ◽  
Multi Walled Carbon Nanotubes ◽  
Deposition Modeling ◽  
Walled Carbon Nanotubes

<p>We demonstrated performance comparison of optical humidity sensor for bare and Multi-walled carbon nanotubes (MWCNTs) slurry coated tapered optical fiber. The starting material for MWCNTs slurry is MWCNTs- acrylonitrile butadiene styrene (ABS) based fused deposition modeling (FDM) 3D printer filament. The ABS was dissolved using acetone to produce MWCNTs-acetone suspension. The MWCNTs-acetone suspension was drop-casted on the tapered fiber to produce MWCNTs slurry by evaporation process at room temperature, which resulted the MWCNTs slurry attach to the tapered fiber. The MWCNTs slurry acts as the cladding for humidity changes measurement. The experimental works showed improvement of sensitivity from 3.811 μW/% of bare tapered fiber to 5.17 μW/% for the coated tapered fiber with MWCNTs slurry when the humidity varied from 45% to 80%.</p>

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