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https://doi.org/10.1021/la302262g
Title: | Dynamics of wicking in silicon nanopillars fabricated with interference lithography and metal-assisted chemical etching | Authors: | Mai, T.T. Lai, C.Q. Zheng, H. Balasubramanian, K. Leong, K.C. Lee, P.S. Lee, C. Choi, W.K. |
Issue Date: | 7-Aug-2012 | Citation: | Mai, T.T., Lai, C.Q., Zheng, H., Balasubramanian, K., Leong, K.C., Lee, P.S., Lee, C., Choi, W.K. (2012-08-07). Dynamics of wicking in silicon nanopillars fabricated with interference lithography and metal-assisted chemical etching. Langmuir 28 (31) : 11465-11471. ScholarBank@NUS Repository. https://doi.org/10.1021/la302262g | Abstract: | The capillary rise of liquid on a surface, or "wicking", has potential applications in biological and industrial processes such as drug delivery, oil recovery, and integrated circuit chip cooling. This paper presents a theoretical study on the dynamics of wicking on silicon nanopillars based on a balance between the driving capillary forces and viscous dissipation forces. Our model predicts that the invasion of the liquid front follows a diffusion process and strongly depends on the structural geometry. The model is validated against experimental observations of wicking in silicon nanopillars with different heights synthesized by interference lithography and metal-assisted chemical etching techniques. Excellent agreement between theoretical and experimental results, from both our samples and data published in the literature, was achieved. © 2012 American Chemical Society. | Source Title: | Langmuir | URI: | http://scholarbank.nus.edu.sg/handle/10635/50904 | ISSN: | 07437463 | DOI: | 10.1021/la302262g |
Appears in Collections: | Staff Publications |
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