Developing Tungsten doped Zinc Oxide nanoparticles’ thick film sensors for quality estimation of Black Tea

Kapil, Sadani and Rajib, Bandyopadhyay (2015) Developing Tungsten doped Zinc Oxide nanoparticles’ thick film sensors for quality estimation of Black Tea. In: 2nd International Conference on 'Microelectronics, Circuits and Systems, 11th -12th July, Kolkata, India..

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Abstract

In a quest to develop indigenous sensors for quality estimation of black tea, nanostructured thick film ZnO sensors doped with tungsten, a transition element with multiple oxidation states has been developed. The nanoparticles were synthesised by chemical combustion technique and characterised by TEM and XRD. When subject to 500 ppm of the four most important black tea biochemical, individually, they exhibited a characteristically unique pattern of conductance changes with good stability. The performance of the sensors have been measured with an index which we call “rate of response” (maximum sensitivity/sensing time). Of the three doped sensors, the 10 (molar)% tungsten doped zinc oxide sensor was found to exhibit rate of responses as high as 32%/s with a sensitivity of around 90% with good selectivity and reproducibility

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Zinc Oxide, Nanoparticles, Sensors
Subjects: Engineering > MIT Manipal > Instrumentation and Control
Depositing User: MIT Library
Date Deposited: 19 Jan 2016 10:11
Last Modified: 11 Feb 2016 11:48
URI: http://eprints.manipal.edu/id/eprint/145115

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