Bubble evolution on vertical electrodes under extreme current densities

Wüthrich, Rolf; Comninellis, Christos; Bleuler, Hannes

doi:10.1016/j.electacta.2004.12.052

Cited by 100 publications

(83 citation statements)

References 14 publications

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“…It may, therefore, be speculated that the critical voltage and the length of the limiting region are indicators of the gas film thickness (decreasing of these values meaning decreasing of gas film thickness). This aspect looks to be a promising method to characterize in a simple way the gas film thickness in SACE and is therefore worth investigating further [17,18].…”

Section: Discussionmentioning

confidence: 99%

Physical principles and miniaturization of spark assisted chemical engraving (SACE)

Wüthrich¹,

Hof²,

Lal³

et al. 2005

J. Micromech. Microeng.

106

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Spark assisted chemical engraving (SACE) is an unconventional micromachining technology based on electrochemical discharge phenomena for glass and various ceramics. The limits of SACE with respect to small dimensions in the particular case of glass are explored. It is found, using a specially developed set-up based on an AFM, that even using extremely sharp tool-electrodes does not allow us to produce a smaller pattern than typically 25 µm. It is concluded that the gas film thickness, in which the electrochemical discharges take place, is the main limiting factor. Further experimental investigations on its formation are investigated. By adding surfactants to the electrolyte, in order to increase the wettability of the tool-electrode and therefore to reduce the gas film thickness, it is observed experimentally that the critical voltage reduces significantly. This observation may lead to a novel method of characterizing the gas film thickness in SACE.

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Section: Discussionmentioning

confidence: 99%

Physical principles and miniaturization of spark assisted chemical engraving (SACE)

Wüthrich¹,

Hof²,

Lal³

et al. 2005

J. Micromech. Microeng.

106

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show abstract

“…It was also termed in literature as plasma electrolysis [2], electrode effects [3][4][5][6] (anode or cathode effects depending on which electrode the phenomena takes place) or contact glow discharge electrolysis (CGDE) [7][8][9]. The understanding of electrochemical discharge continued with the increasing interest for its application.…”

Section: Introductionmentioning

confidence: 99%

The effect of electrolyte constituents on contact glow discharge electrolysis

Wang

Yue

et al. 2010

Electrochimica Acta

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“…It is also termed in literature as plasma electrolysis [2], electrode effects [3][4][5][6] (anode or cathode effects depending on which electrode the phenomena takes place) or contact glow discharge electrolysis (CGDE) [7][8][9]. There have been extensive studies on electrochemical discharge because of increasing interest for its application.…”

Section: Introductionmentioning

confidence: 99%

Influence of Solution Conductivity on Contact Glow Discharge Electrolysis

Wang

Zhang

et al. 2010

Plasma Chem Plasma Process

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Using a thin platinum anode in contact with an electrolytic solution, normal electrolysis develops spontaneously to contact glow discharge electrolysis (CGDE) at sufficiently high voltage. During this transition, midpoint voltage (V D ) is an important critical value. From V D on, plasma is sustained by direct current glow discharge between the electrode and the electrolyte surface. And H 2 O 2 is the main non-faradaic yield. In this study, effects of conductivity on V D and the concentration of H 2 O 2 have been investigated in Na 2 SO 4 and NaCl solution. The results indicate that V D decreases with the increasing conductivity. And the value of V D and the concentration of H 2 O 2 in NaCl solution are less than those in Na 2 SO 4 solution. The concentration of H 2 O 2 increases steadily and then decreases to maintain a stationary value.

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Bubble evolution on vertical electrodes under extreme current densities

Cited by 100 publications

References 14 publications

Physical principles and miniaturization of spark assisted chemical engraving (SACE)

Physical principles and miniaturization of spark assisted chemical engraving (SACE)

The effect of electrolyte constituents on contact glow discharge electrolysis

Influence of Solution Conductivity on Contact Glow Discharge Electrolysis

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