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Title: Opto-electronic humidity sensor with incident light in the form of a conical beam
Authors: Yadav, B C
Srivastava, Anchal
Shukla, R K
Dubey, G C
Keywords: Humidity Sensor;Thin Film;Conical beam
Issue Date: Sep-2006
Publisher: CSIR
IPC Code: G02B
Abstract: In the present work, an extensive experimental investigation of TiO2 film has been carried out. TiO2 films have been deposited on a prism base by using sol-gel spin process. As the humidity increases in the environment where such films are placed, physisorption and chemisorption of water take place through the pores of films. This leads to a corresponding modulation in the intensity of reflected light. Thus, relative humidity is estimated directly in terms of modulation in the intensity of light observed on a digital power meter. Surface morphology of TiO2 films has also been studied.
Page(s): 694-699
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.44(09) [September 2006]

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