NDLI: Macrotyloma uniflorum proteins as humidity sensing material

Content Provider	IEEE Xplore Digital Library
Author	Tagad, Chandrakant K. Brahmankar, Piyush Aiyer, R. C. Sabharwal, Sushma G.
Copyright Year	2012
Description	Author affiliation: Centre for Sensor Studies, Electronic Science Department, University of Pune, 411007, India (Brahmankar, Piyush; Aiyer, R. C.) \|\| Biochemistry Division, Department of Chemistry, University of Pune, 411007, India (Tagad, Chandrakant K.; Sabharwal, Sushma G.)
Abstract	For the first time, proteins extracted from a plant source have been used as a humidity sensing material for the development of a humidity sensor. Humidity sensing characteristics of protein composite extracted from the seeds of Macrotyloma uniflorum coated on ceramic rod having built in electrodes were investigated for their electrical behavior as a function of relative humidity. The resistance versus % RH was measured for multiple layers of protein (each layer of 10 µl). Resistance increases slowly with decreasing humidity up to 30%RH followed by drastic increase at the lower range of RH. Humidity sensing range was found to increase with increasing the number of layers of protein, thus with increasing thickness of the coat. Humidity response of the sensor having four layers was found to cover a wide range of (8% to 86%) relative humidity. A five order increase in resistance was observed for change in relative humidity from 86% to 8%RH. The sensor response and recovery time is about 50–60 s and 160 s respectively. The material is characterized by FTIR.
Starting Page	232
Ending Page	235
File Size	732616
Page Count	4
File Format	PDF
ISBN	9781467310406
e-ISBN	9781467310437
DOI	10.1109/ISPTS.2012.6260933
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-03-07
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Resistance Proteins Relative humidity Electrochemical properties Biological system modeling Humidity measurement Humidity
Content Type	Text
Resource Type	Article

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