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Silica nanofibers based impedance type humidity detector prepared on glass substrate
Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology. Pakistan Inst. Engn. and Appl Sci, Pakistan.
Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
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2013 (English)In: Vacuum, ISSN 0042-207X, E-ISSN 1879-2715, Vol. 87, 1-6 p.Article in journal (Refereed) Published
Abstract [en]

Impedance type relative humidity detector is fabricated by depositing electrospun silica nanofibers on glass substrate. The silica nanofibers with an average diameter similar to 150 nm and length similar to 100 mu m were used. Thermogravimetric and differential scanning calorimetric analysis confirm that the accurate annealing temperature is 500 degrees C for complete removal of PVP. Humidity detecting devices were fabricated by defining titanium electrodes on top of the silica nanofibers. The performance of silica nanofibers humidity detectors was tested by AC electrical measurements at 40-90% relative humidity. The response and the recovery times were 5 s and 3 s, respectively, between 40% and 90% relative humidity. Contribution of dipoles, space charge polarization, relaxation of these dipoles and low frequency dispersion phenomenon were observed during impedance measurements.

Place, publisher, year, edition, pages
Elsevier , 2013. Vol. 87, 1-6 p.
Keyword [en]
SiO2 nanofibers, Electric modulus, Humidity detector, Response time
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-86108DOI: 10.1016/j.vacuum.2012.06.016ISI: 000310549900001OAI: oai:DiVA.org:liu-86108DiVA: diva2:575143
Note

Funding Agencies|Higher Education Commission (HEC)||

Available from: 2012-12-07 Created: 2012-12-07 Last updated: 2017-12-07

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Israr Qadir, MuhammadJamil Rana, SadafNur, OmerWillander, Magnus

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Israr Qadir, MuhammadJamil Rana, SadafNur, OmerWillander, Magnus
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