Effect of electrode surface topology on charge injection characteristics in dielectric liquids: An experimental study

Russel, M.K.; Selvaganapathy, P.R.; Ching, C.Y.

doi:10.1016/j.elstat.2014.08.001

Cited by 25 publications

(8 citation statements)

References 24 publications

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“…This result might also be attributed to the differences in the work functions of the three-electrode materials. The electrode material and the surface morphology of the electrode will affect the breakdown voltage of the liquid [8].…”

Section: Electrodes Surface Topography Test Resultsmentioning

confidence: 99%

“…This result might also be attributed to the differences in the work functions of the three‐electrode materials. The electrode material and the surface morphology of the electrode will affect the breakdown voltage of the liquid [8]. The roughness of the electrode is one of the ways to represent the surface topography, the greater the roughness of the same electrode material, the lower the breakdown voltage.…”

Section: Resultsmentioning

confidence: 99%

“…A lower roughness of the same electrode material contributes to a higher electron work function. According to (8), the electron barrier at the interface increased. Therefore, the space charge injection of the anode decreases after surface modification.…”

Section: Effect Of Electrode Surface Modification On Impulse Insulatimentioning

confidence: 99%

“…Many researchers have attempted to control the impulse insulation properties of liquid dielectrics in terms of both the electrode material and its surface modification. Selection of appropriate electrode materials can inhibit charge injection, thus improving the insulation performance of the liquid [8]. Charge injection is related to the interfacial barrier between the electrode material and the liquid dielectric [9], which is mainly affected by the electrode material [10][11][12], the surface morphology of the electrode [13][14][15], the properties of the liquid dielectric, and the distance between the electrodes [16].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effect of surface modification of electrodes on charge injection and dielectric characteristics of propylene carbonate

Yang

Shao

et al. 2020

High Voltage

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Space charge injected into a liquid dielectric by an electrode under an impulse voltage causes the electric field to be distorted, which affects the dielectric's insulation performance. In this study, the authors study the surface modification of threeelectrode materials, namely aluminium, copper, and stainless steel, by sputtering of titanium dioxide (TiO 2) based on magnetron sputtering. The breakdown voltage of propylene carbonate and the surface morphology of the electrodes before and after modification were examined. Furthermore, the distribution of the space charge injected into the propylene carbonate from the different electrode materials was also measured based on the Kerr electro-optic effect. These results indicate that the breakdown voltage of propylene carbonate increased by 7, 4, and 9% after surface modification of aluminium, copper, and stainless steel, respectively. After sputtering of TiO 2 , micro-grooves on the surface of the three-electrode materials became smooth, and the surface roughness decreased, which changed the barrier height of the solid-liquid interface. The space charge injection mode of the three-electrode materials before and after surface modification was bipolar injection; however, the space charge injection amounts were markedly lower for the modified electrodes.

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Section: Electrodes Surface Topography Test Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Effect Of Electrode Surface Modification On Impulse Insulatimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of surface modification of electrodes on charge injection and dielectric characteristics of propylene carbonate

Yang

Shao

et al. 2020

High Voltage

View full text Add to dashboard Cite

show abstract

“…The current-voltage characteristic (Fig. 3) shows the typical trend of discharge in a dielectric liquid, with a low slope quasi-Ohmic region and a high slope injection region [16]. The threshold voltage (V th ) for the onset of charge injection was estimated as the voltage where the low slope quasi-Ohmic region and the steeper injection region intersect [16], which in this case is 637 V. The static pressure with applied voltage follows a similar trend to the current-voltage characteristic and indicates that the pressure generated is directly proportional to the current.…”

Section: Effect Of DC Voltagementioning

confidence: 99%

Ion drag electrohydrodynamic (EHD) micro-pumps under a pulsed voltage

Russel

Selvaganapathy

Ching

2016

Journal of Electrostatics

Self Cite

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Creation of Nanotips on ITO Electrode by Nanoparticle Deposition: An Easy Way to Enhance the Performance of Electrically Responsive Photonic Crystal and Fabricate Electrically Triggered Anticounterfeiting Tags

Zhao

Sheng

et al. 2023

Adv Funct Materials

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Electrically responsive photonic crystals (ERPC) are promising materials for electrophoretic displays, smart windows, and tunable optical devices. However, the high working voltage limits the application of most polar ERPCs because it damages color saturation, response stability, and reversibility. Herein, an easy but general method based on the modification of electrodes with nanoparticles is developed to improve ERPC's performance. The deposition of Au, Cu, or Cu2O nanoparticles created nanotip structures on the electrode, which enhanced the charge injection and local electric field strength, lowered 43% of the working voltage, and increased the color saturation. Meanwhile, the lowered voltage inhibited the electrodeposition of colloidal particles and the electrochemical reaction, which also improved the stability and reversibility of the electrical response. Based on the region‐selective modification of the electrode and the resulting asymmetric electrical response, an electrically triggered tag with a “pattern showing/hiding” effect is fabricated for anticounterfeiting purposes.

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Effect of electrode surface topology on charge injection characteristics in dielectric liquids: An experimental study

Cited by 25 publications

References 24 publications

Effect of surface modification of electrodes on charge injection and dielectric characteristics of propylene carbonate

Effect of surface modification of electrodes on charge injection and dielectric characteristics of propylene carbonate

Ion drag electrohydrodynamic (EHD) micro-pumps under a pulsed voltage

Creation of Nanotips on ITO Electrode by Nanoparticle Deposition: An Easy Way to Enhance the Performance of Electrically Responsive Photonic Crystal and Fabricate Electrically Triggered Anticounterfeiting Tags

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