-
- Home
- Journals
- Bulletin of Materials Science
-
N K PANDEY
Articles written in Bulletin of Materials Science
-
-
Volume 40 Issue 2 April 2017 pp 253-262
VANDNA SHAKYA N K PANDEY SUNEET KUMAR MISRA AKASH ROY
This study reports the humidity sensing characteristics of ZnO–WO$_3$ nanocomposite. Pellet samples of 0–5 weight% ZnO in WO$_3$ were sintered from 300 to 600$^{\circ}$C. When exposed to humidity, the resistance of the sensing samples was found to decrease with increase in relative humidity (RH). Five percent ZnO-doped WO$_3$ showed maximum sensitivity of 20.95 M$\Omega$/%RH in 15–95% RH range. Sensor parameters like reproducibility, aging, hysteresis, response and recovery times were also studied. Sensing mechanism is discussed in terms of sintering temperature, composition and crystallite size of the sensing element. It was observed that sensing mechanism is strongly based on annealing temperature and percentage of doping. The sensing samples have also been investigated by X-ray diffraction, scanning electron microscope (SEM) and Raman spectroscopy. The crystalline size of the sample was identified by powder X-Ray Diffraction data. The SEM analysis was used to study the surface morphology. The structure, phase and the degree of crystallinity of the materials were examined by Raman spectroscopy.
-
-
Bulletin of Materials Science
Volume 44, 2021
All articles
Continuous Article Publishing mode
-
Bulletin of Materials Science | News
-
Dr Shanti Swarup Bhatnagar for Science and Technology
Posted on October 12, 2020Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
Physical Sciences 2020 -
Editorial Note on Continuous Article Publication
Posted on July 25, 2019Click here for Editorial Note on CAP Mode
-