TY - JOUR
T1 - Wetting characteristics of 3-dimensional nanostructured fractal surfaces
AU - Davis, Ethan
AU - Liu, Ying
AU - Jiang, Lijia
AU - Lu, Yongfeng
AU - Ndao, Sidy
N1 - Funding Information:
This work has been supported by a NASA EPSCoR Grant # − NNX13AB17A and by funds from the Department of Mechanical and Materials Engineering and the College of Engineering at UNL , awarded to SN. This work was also supported by the National Science Foundation (CMMI 1068510 and 1129613 ) and funds from the Nebraska Center for Energy Sciences Research (NCESR) awarded to Yongfeng Lu. This work was performed in part in Facilities of the Nebraska Center for Materials and Nanoscience which is supported by the Nebraska Research Initiative.
Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2017/1/15
Y1 - 2017/1/15
N2 - This article reports the fabrication and wetting characteristics of 3-dimensional nanostructured fractal surfaces (3DNFS). Three distinct 3DNFS surfaces, namely cubic, Romanesco broccoli, and sphereflake were fabricated using two-photon direct laser writing. Contact angle measurements were performed on the multiscale fractal surfaces to characterize their wetting properties. Average contact angles ranged from 66.8° for the smooth control surface to 0° for one of the fractal surfaces. The change in wetting behavior was attributed to modification of the interfacial surface properties due to the inclusion of 3-dimensional hierarchical fractal nanostructures. However, this behavior does not exactly obey existing surface wetting models in the literature. Potential applications for these types of surfaces in physical and biological sciences are also discussed.
AB - This article reports the fabrication and wetting characteristics of 3-dimensional nanostructured fractal surfaces (3DNFS). Three distinct 3DNFS surfaces, namely cubic, Romanesco broccoli, and sphereflake were fabricated using two-photon direct laser writing. Contact angle measurements were performed on the multiscale fractal surfaces to characterize their wetting properties. Average contact angles ranged from 66.8° for the smooth control surface to 0° for one of the fractal surfaces. The change in wetting behavior was attributed to modification of the interfacial surface properties due to the inclusion of 3-dimensional hierarchical fractal nanostructures. However, this behavior does not exactly obey existing surface wetting models in the literature. Potential applications for these types of surfaces in physical and biological sciences are also discussed.
KW - Fractal
KW - Hierarchical
KW - Two-photon photolithography
KW - Wetting characteristics
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U2 - 10.1016/j.apsusc.2016.09.102
DO - 10.1016/j.apsusc.2016.09.102
M3 - Article
AN - SCOPUS:84989942112
VL - 392
SP - 929
EP - 935
JO - Applied Surface Science
JF - Applied Surface Science
SN - 0169-4332
ER -