Precise Placement of Microbubble Templates at Single Entity Resolution
SCIE
SCOPUS
- Title
- Precise Placement of Microbubble Templates at Single Entity Resolution
- Authors
- Kim, Ji Tae; Pyo, Jaeyeon; Seol, Seung Kwon; Je, Jung Ho
- Date Issued
- 2018-10
- Publisher
- AMER CHEMICAL SOC
- Abstract
- Microbubbles have been used as a soft template to produce hollow structures for diverse applications in chemistry, materials science, and biomedicine. It is a challenge, however, to control their size and position at single entity level. We report on an on-demand method to produce and place a single microbubble with programmed size and position. The method exploits scanning an electrolyte-filled micropipette to place a hydrogen (H-2) bubble, generated by water electrolysis, on the desired position. The bubble growth is self-limited after the bubble size fits to the pipet aperture, yielding well-controlled bubble size. The bubble growth dynamics within the pipet is successfully investigated by a methodology that combines phase-contrast X-ray imaging and electric-current measurement. We show that the microbubbles, accurately controlled in size and position, can be used for the fabrication of various polypyrrole microcontainer arrays. We expect the scanning-pipet strategy could be generalized for manipulating various soft materials at will.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/95523
- DOI
- 10.1021/acsmacrolett.8b00646
- ISSN
- 2161-1653
- Article Type
- Article
- Citation
- ACS MACRO LETTERS, vol. 7, no. 10, page. 1267 - 1271, 2018-10
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