Minimizing gas phase fouling of electrodes using capillarity in surface microstructures

Ulrich Wohlgenannt; D. Chugh; Frederik Kriel; E. Nicolau; C. Cabrera; C. Semprebon; M. Brinkmann; C. Priest

Minimizing gas phase fouling of electrodes using capillarity in surface microstructures

Ulrich Wohlgenannt, D. Chugh, Frederik Kriel, E. Nicolau, C. Cabrera, C. Semprebon, M. Brinkmann, C. Priest^*

^*Corresponding author for this work

Mathematics, Physics and Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

Spontaneous removal of bubbles from flat and microstructured Pt-coated surfaces was studied to understand the role of surface structure in preventing gas phase fouling of electrodes. Bubble nucleation, growth, and release were observed on flat and micropillar surfaces. On the micropillars a capillary instability releases the bubble from within the structure. This instability reduces the buoyancy force required for complete detachment of the bubble as compared to a flat surface. Numerical calculations of the critical bubble volume for release as well as the evolution of bubble morphologies during growth agree with the observations made in our laboratory experiments.

Original language	English
Title of host publication	18th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2014
Publisher	Chemical and Biological Microsystems Society
Pages	1232-1234
Number of pages	3
ISBN (Electronic)	9780979806476
Publication status	Published - Oct 2014
Event	18th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2014 - San Antonio, United States Duration: 26 Oct 2014 → 30 Oct 2014

Conference

Conference	18th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2014
Country/Territory	United States
City	San Antonio
Period	26/10/14 → 30/10/14

Keywords

Bubbles
Capillarity
Electrochemistry
Micropillars
Wetting

Cite this

Wohlgenannt, U., Chugh, D., Kriel, F., Nicolau, E., Cabrera, C., Semprebon, C., Brinkmann, M., & Priest, C. (2014). Minimizing gas phase fouling of electrodes using capillarity in surface microstructures. In 18th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2014 (pp. 1232-1234). Chemical and Biological Microsystems Society.

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title = "Minimizing gas phase fouling of electrodes using capillarity in surface microstructures",

abstract = "Spontaneous removal of bubbles from flat and microstructured Pt-coated surfaces was studied to understand the role of surface structure in preventing gas phase fouling of electrodes. Bubble nucleation, growth, and release were observed on flat and micropillar surfaces. On the micropillars a capillary instability releases the bubble from within the structure. This instability reduces the buoyancy force required for complete detachment of the bubble as compared to a flat surface. Numerical calculations of the critical bubble volume for release as well as the evolution of bubble morphologies during growth agree with the observations made in our laboratory experiments.",

keywords = "Bubbles, Capillarity, Electrochemistry, Micropillars, Wetting",

author = "Ulrich Wohlgenannt and D. Chugh and Frederik Kriel and E. Nicolau and C. Cabrera and C. Semprebon and M. Brinkmann and C. Priest",

year = "2014",

month = oct,

language = "English",

pages = "1232--1234",

booktitle = "18th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2014",

publisher = "Chemical and Biological Microsystems Society",

note = "18th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2014 ; Conference date: 26-10-2014 Through 30-10-2014",

}

Wohlgenannt, U, Chugh, D, Kriel, F, Nicolau, E, Cabrera, C, Semprebon, C, Brinkmann, M & Priest, C 2014, Minimizing gas phase fouling of electrodes using capillarity in surface microstructures. in 18th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2014. Chemical and Biological Microsystems Society, pp. 1232-1234, 18th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2014, San Antonio, United States, 26/10/14.

Minimizing gas phase fouling of electrodes using capillarity in surface microstructures. / Wohlgenannt, Ulrich; Chugh, D.; Kriel, Frederik et al.
18th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2014. Chemical and Biological Microsystems Society, 2014. p. 1232-1234.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Minimizing gas phase fouling of electrodes using capillarity in surface microstructures

AU - Wohlgenannt, Ulrich

AU - Chugh, D.

AU - Kriel, Frederik

AU - Nicolau, E.

AU - Cabrera, C.

AU - Semprebon, C.

AU - Brinkmann, M.

AU - Priest, C.

PY - 2014/10

Y1 - 2014/10

N2 - Spontaneous removal of bubbles from flat and microstructured Pt-coated surfaces was studied to understand the role of surface structure in preventing gas phase fouling of electrodes. Bubble nucleation, growth, and release were observed on flat and micropillar surfaces. On the micropillars a capillary instability releases the bubble from within the structure. This instability reduces the buoyancy force required for complete detachment of the bubble as compared to a flat surface. Numerical calculations of the critical bubble volume for release as well as the evolution of bubble morphologies during growth agree with the observations made in our laboratory experiments.

AB - Spontaneous removal of bubbles from flat and microstructured Pt-coated surfaces was studied to understand the role of surface structure in preventing gas phase fouling of electrodes. Bubble nucleation, growth, and release were observed on flat and micropillar surfaces. On the micropillars a capillary instability releases the bubble from within the structure. This instability reduces the buoyancy force required for complete detachment of the bubble as compared to a flat surface. Numerical calculations of the critical bubble volume for release as well as the evolution of bubble morphologies during growth agree with the observations made in our laboratory experiments.

KW - Bubbles

KW - Capillarity

KW - Electrochemistry

KW - Micropillars

KW - Wetting

M3 - Conference contribution

AN - SCOPUS:84941694952

SP - 1232

EP - 1234

BT - 18th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2014

PB - Chemical and Biological Microsystems Society

T2 - 18th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2014

Y2 - 26 October 2014 through 30 October 2014

ER -

Minimizing gas phase fouling of electrodes using capillarity in surface microstructures

Abstract

Conference

Keywords

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