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Kim, Taesung
Microfluidics & Nanomechatronics Lab (μFNM)
Research Interests
  • Microfluidics & Nanofluidics
  • Nanoscale Transport Phenomena
  • MEMS & BioMEMS
  • Nanofabrication & Nanomechatronics

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Controlled open-cell two-dimensional liquid foam generation for micro- and nanoscale patterning of materials

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Title
Controlled open-cell two-dimensional liquid foam generation for micro- and nanoscale patterning of materials
Author
Bae, JuyeolLee, KyunghunSeo, SangjinPark, Jun GyuZhou, QitaoKim, Taesung
Issue Date
2019-07
Publisher
NATURE PUBLISHING GROUP
Citation
NATURE COMMUNICATIONS, v.10, no.1, pp.3209
Abstract
Liquid foam consists of liquid film networks. The films can be thinned to the nanoscale via evaporation and have potential in bottom-up material structuring applications. However, their use has been limited due to their dynamic fluidity, complex topological changes, and physical characteristics of the closed system. Here, we present a simple and versatile microfluidic approach for controlling two-dimensional liquid foam, designing not only evaporative microholes for directed drainage to generate desired film networks without topological changes for the first time, but also microposts to pin the generated films at set positions. Patterning materials in liquid is achievable using the thin films as nanoscale molds, which has additional potential through repeatable patterning on a substrate and combination with a lithographic technique. By enabling direct-writable multi-integrated patterning of various heterogeneous materials in two-dimensional or three-dimensional networked nanostructures, this technique provides novel means of nanofabrication superior to both lithographic and bottom-up state-of-the-art techniques.
URI
https://scholarworks.unist.ac.kr/handle/201301/30790
URL
https://www.nature.com/articles/s41467-019-11281-y
DOI
10.1038/s41467-019-11281-y
ISSN
2041-1723
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