Staff View: Dielectric and AC conductivity studies of novel porous armalcolite nanocomposite-based humidity sensor

Dielectric and AC conductivity studies of novel porous armalcolite nanocomposite-based humidity sensor

Armalcolite, a current motivated rare earth ceramic usually available in the moon, had been used for the first time, as dielectric-type humidity sensors. The armalcolite nanocomposite was prepared using multistep solid-state sintering under high pressure and a high-sensitive dielectric sensor was de...

Full description

Saved in:

Bibliographic Details
Main Authors:	Tripathy, Ashis, Pramanik, Sumit, Manna, Ayan, Radzi, Zamri, Abu Osman, Noor Azuan
Format:	Article
Published:	Wiley 2017
Subjects:	R Medicine TJ Mechanical engineering and machinery
Online Access:	http://eprints.um.edu.my/22873/ https://doi.org/10.1111/jace.15033
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my.um.eprints.22873
record_format	eprints
spelling	my.um.eprints.228732019-10-26T07:05:45Z http://eprints.um.edu.my/22873/ Dielectric and AC conductivity studies of novel porous armalcolite nanocomposite-based humidity sensor Tripathy, Ashis Pramanik, Sumit Manna, Ayan Radzi, Zamri Abu Osman, Noor Azuan R Medicine TJ Mechanical engineering and machinery Armalcolite, a current motivated rare earth ceramic usually available in the moon, had been used for the first time, as dielectric-type humidity sensors. The armalcolite nanocomposite was prepared using multistep solid-state sintering under high pressure and a high-sensitive dielectric sensor was developed for humidity controlling applications. Different concerning phases developed by the proper sintering were analyzed precisely by X-ray diffraction (XRD) as well as scanning electron microscopy (SEM). At 100 Hz frequency, the obtained dielectric constant was 24 times greater at 95% relative humidity (RH) as compared to 33% RH. The armalcolite-based sensor showed lower hysteresis (<3.5%), good stability, and faster response (~18 seconds) and recovery (~35 seconds) times compared to conventional humidity sensors. The sensing mechanism of the nanocomposite was categorically determined by the analyzed characteristics parameters such as dielectric constants, normalized loss tangent, and alternating current conductivity properties. This study also confirmed that the whole conduction mechanism was accomplished by electrons or ions and dipoles in the entire RH range. Therefore, the present armalcolite-based porous nanocomposite would be a potential sensing material for novel humidity sensors. Wiley 2017 Article PeerReviewed Tripathy, Ashis and Pramanik, Sumit and Manna, Ayan and Radzi, Zamri and Abu Osman, Noor Azuan (2017) Dielectric and AC conductivity studies of novel porous armalcolite nanocomposite-based humidity sensor. Journal of the American Ceramic Society, 100 (11). pp. 5131-5140. ISSN 0002-7820 https://doi.org/10.1111/jace.15033 doi:10.1111/jace.15033
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Research Repository
url_provider	http://eprints.um.edu.my/
topic	R Medicine TJ Mechanical engineering and machinery
spellingShingle	R Medicine TJ Mechanical engineering and machinery Tripathy, Ashis Pramanik, Sumit Manna, Ayan Radzi, Zamri Abu Osman, Noor Azuan Dielectric and AC conductivity studies of novel porous armalcolite nanocomposite-based humidity sensor
description	Armalcolite, a current motivated rare earth ceramic usually available in the moon, had been used for the first time, as dielectric-type humidity sensors. The armalcolite nanocomposite was prepared using multistep solid-state sintering under high pressure and a high-sensitive dielectric sensor was developed for humidity controlling applications. Different concerning phases developed by the proper sintering were analyzed precisely by X-ray diffraction (XRD) as well as scanning electron microscopy (SEM). At 100 Hz frequency, the obtained dielectric constant was 24 times greater at 95% relative humidity (RH) as compared to 33% RH. The armalcolite-based sensor showed lower hysteresis (<3.5%), good stability, and faster response (~18 seconds) and recovery (~35 seconds) times compared to conventional humidity sensors. The sensing mechanism of the nanocomposite was categorically determined by the analyzed characteristics parameters such as dielectric constants, normalized loss tangent, and alternating current conductivity properties. This study also confirmed that the whole conduction mechanism was accomplished by electrons or ions and dipoles in the entire RH range. Therefore, the present armalcolite-based porous nanocomposite would be a potential sensing material for novel humidity sensors.
format	Article
author	Tripathy, Ashis Pramanik, Sumit Manna, Ayan Radzi, Zamri Abu Osman, Noor Azuan
author_facet	Tripathy, Ashis Pramanik, Sumit Manna, Ayan Radzi, Zamri Abu Osman, Noor Azuan
author_sort	Tripathy, Ashis
title	Dielectric and AC conductivity studies of novel porous armalcolite nanocomposite-based humidity sensor
title_short	Dielectric and AC conductivity studies of novel porous armalcolite nanocomposite-based humidity sensor
title_full	Dielectric and AC conductivity studies of novel porous armalcolite nanocomposite-based humidity sensor
title_fullStr	Dielectric and AC conductivity studies of novel porous armalcolite nanocomposite-based humidity sensor
title_full_unstemmed	Dielectric and AC conductivity studies of novel porous armalcolite nanocomposite-based humidity sensor
title_sort	dielectric and ac conductivity studies of novel porous armalcolite nanocomposite-based humidity sensor
publisher	Wiley
publishDate	2017
url	http://eprints.um.edu.my/22873/ https://doi.org/10.1111/jace.15033
_version_	1648736236633849856
score	13.211869

Dielectric and AC conductivity studies of novel porous armalcolite nanocomposite-based humidity sensor

Similar Items