Results 81 to 90 of about 2,272 (222)

ZnO nanobelt based conductometric H2 and NO2 gas sensors [PDF]

, 2005
Conductometric H2 and NO2 gas sensors based on single-crystalline ZnO nanobelt sensitive layers have been developed. These layers were deposited using a rf magnetron sputterer. TEM and SEM characterization methods were employed to study the morphology of
Choopun, S, Kalantar-Zadeh, K, Sadek, A, Wlodarski, W   +3 more
core   +1 more source

Effect of foreign impurity and growth temperatures on hexagonal structure and fundamental properties of ZnO nanorods

Microscopy Research and Technique, Volume 87, Issue 11, Page 2687-2700, November 2024.
This study primarily deals with the fundamental aspects of material science and structural, morphological, transport charge carriers, electron transfer kinetics, reactivity, stability, optical and electrical properties. This study develops a strong methodology between impurity (Gd and Ni) nanoparticles in ZnO crystal system and the performance and ...
T. Seydioglu, S. Kurnaz, E. Aşıkuzun Tokeşer, G. Yildirim, O. Ozturk   +4 more
wiley   +1 more source

INTRINSIC DEFECTS IN ZnO VARISTOR CERAMICS

Acta Physica Sinica, 1996
The relationship between dielectric loss factor D (tanδ) and frequency for ZnO-Sb2O3-BaO and ZnO-Bi2O3-Sb2O3-BaO varistor ceramics has been investigated. A new dielectric loss peak was found near by 2MHz at room temperature for the sample in the absence of Bi2O3, the corresponding electron trapping level was about 0.18 eV, it was considered that the ...
null FU GANG, null CHEN ZHI-XIONG, null SHI BIN   +2 more
openaire   +1 more source

Detection of failures in HV surge arrester using chaos pattern with deep learning neural network

IET Science, Measurement &Technology, Volume 18, Issue 9, Page 603-615, November 2024.
This paper proposes a fault diagnosis method for HV surge arresters based on the chaotic system and CNN. Compared to AlexNet, HOG+BPNN, HOG+SVM, HOG+DT, and HOG+KNN detection methods, the accuracy of the method proposed in this paper is 97%. Abstract As a protective component of HV equipment, the primary function of a surge arrester is to mitigate the ...
Chun‐Chun Hung, Meng‐Hui Wang, Shiue‐Der Lu, Cheng‐Chien Kuo   +3 more
wiley   +1 more source

Nanostructural and optical properties of hierarchical ZnO grown via hydrothermal method [PDF]

, 2016
A simple hydrothermal method was employed to synthesize 3D hierarchical ZnO nanorods deposited on Si (100) substrate at different growth temperatures (110 and 90oC) within 3 h.
Abbas, K. N., Al-Asedy, H. J., Al-Azawi, M. A., Bidin, N.   +3 more
core   +1 more source

Electronic structure of the muonium center as a shallow donor in ZnO

, 2001
The electronic structure and the location of muonium centers (Mu) in single-crystalline ZnO were determined for the first time. Two species of Mu centers with extremely small hyperfine parameters have been observed below 40 K.
B. D. Rainford, D. G. Thomas, D. L. Rode, D. M. Bagnall, E. Mollwo, G. Heiland, J. I. Lander, Koichiro Shimomura, Kusuo Nishiyama, R. F. Kiefl, Ryosuke Kadono, W. K. Dawson   +11 more
core   +1 more source

Tunneling Currents in Zinc Oxide [PDF]

, 1970
An examination of the current-voltage characteristics of gold and palladium surface barriers on degenerate zinc oxide has been made. Both chemically prepared and cleaved surfaces were studied. The current conduction mode is shown to be thermionic-field
Mead, C. A., Neville, R. C.
core   +1 more source

Influence Mechanism of Micro Grain-boundary Parameters to the Electrical Properties of ZnO Varistor

工程科学与技术
ZnO varistors exhibit excellent nonlinear voltage–current characteristics and substantial energy capacity, enabling them to absorb impulse energy during power system overvoltages and thus protect the electrical equipment.
Pengfei MENG, Jingke GUO, Xiao LEI, Lei WANG, Bingbing ZHANG, Kui MIAO, Jun HU   +6 more
doaj  

Dielectric spectra of ZnO varistor ceramics

Acta Physica Sinica, 2012
In this paper, the dielectric spectra of ZnO varistor ceramics are measured by Novocontrol wide band dielectric spectrometer in a temperature range of -160℃-200℃ and frequency range of 0.1 Hz-0.1 MHz. It is found that electron transportation can be characterized by the flat region on a low frequency side of σ'-f curve.
null Cheng Peng-Fei, null Li Sheng-Tao, null Li Jian-Ying   +2 more
openaire   +1 more source

Nonlinear DC-response in Composites: a Percolative Study

, 1997
The DC-response, namely the $I$-$V$ and $G$-$V$ charateristics, of a variety of composite materials are in general found to be nonlinear. We attempt to understand the generic nature of the response charactersistics and study the peculiarities associated ...
A. A. Middleton, A. A. Middleton, A. J. Rimberg, A. Kar Gupta, A. Kar Gupta, Abhijit Kar Gupta, Asok K. Sen, D. A. G. Bruggeman, D. Lenstra, D. S. Fisher, D. van der Putten, E. Canessa, E. K. Sichel, G. D. Mahan, G. E. Pike, I-G. Chen, I. Balberg, J. Robertson, K. K. Bardhan, K. K. Bardhan, L. de Arcangelis, L. K. H. van Beek, M. Aertsens, M. Prester, M. Reghu, M. Sahimi, P. Mandal, R. K. Chakrabarty, R. Landauer, S. A. Wolf, S. Kirkpatrick, S. Roux, U. N. Nandy, Y. Gefen   +33 more
core   +1 more source