Electrical Impedance Characterization of Bi Doped BaTiO3 Prepared through Chemical Route

2010 ◽  
Vol 116 (1) ◽  
pp. 151-160 ◽  
Author(s):  
K. Sreenu ◽  
G. S. Kumar ◽  
N. V. Prasad ◽  
M. Vithal ◽  
G. Prasad
2019 ◽  
Vol 13 (4) ◽  
pp. 295-305 ◽  
Author(s):  
Hien T. Ngoc Le ◽  
Junsub Kim ◽  
Jinsoo Park ◽  
Sungbo Cho

Author(s):  
Onur Ozkan ◽  
Vaibhav Bahadur

Abstract An electric field can suppress the Leidenfrost state by electrostatically attracting liquid to the surface, which results in significantly higher heat transfer. This study highlights and quantifies the statistical nature of wetting during electrostatic suppression via electrical impedance characterization of Leidenfrost pools. Firstly, electrical impedance characterization is used to study the onset of suppression of the Leidenfrost state. Two different threshold voltages are defined and measured. The first threshold voltage corresponds to the onset of transient (intermittent) wetting and the second threshold corresponds to the onset of continuous wetting. The effect of the temperature and the applied AC waveform frequency on the threshold voltages is studied. Next, the wetted area is measured for different temperatures and voltages. The statistical nature of wetting during electrostatic suppression of the Leidenfrost state is characterized. The measured wetting enhancement indicates that heat transfer can be enhanced by an order of magnitude via electrostatic suppression. Together, these results provide an in-depth understanding of electrostatic suppression, and highlight electrical impedance measurements as a powerful diagnostic tool for this field.


2016 ◽  
Vol 16 (11) ◽  
pp. 11928-11932
Author(s):  
Yuntae Kim ◽  
Yoon Choi ◽  
Minseok Jeon ◽  
Junhong Min ◽  
Sungbo Cho

2021 ◽  
Vol 10 (14) ◽  
pp. e470101422189
Author(s):  
Anuar José Mincache ◽  
Odair Gonçalves de Oliveira ◽  
Lilian Felipe da Silva Tupan ◽  
Daniel Matos Silva ◽  
Ivair Aparecido dos Santos ◽  
...  

In this work Bi1−xNdxFe0.99Co0.01O3 ceramics compositions were synthesized for x = 0.05, 0.20 and, y = 0.01. Structural refinement results show that most of the samples crystallized in a rhombohedral symmetry with R3c. Measurements magnetoelectric coefficient, show that the magnetoelectric coefficients are of second order. The electrical impedance characterization of in function external magnetic fields, has a relative variation of the real dielectric response, the loss tangent and the electrical impedance. The systems, as the DC magnetic field strength increased a gain in both the values of the dielectric constant variation, as well as the variation of the electrical impedance. In other words, the greater the intensity of the magnetic field, the greater your response. There were also significant variations with of the magnetic field AC.  


2010 ◽  
Vol 31 (7) ◽  
pp. 995-1009 ◽  
Author(s):  
Shlomi Laufer ◽  
Antoni Ivorra ◽  
Victor E Reuter ◽  
Boris Rubinsky ◽  
Stephen B Solomon

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