Abstract
In this study, an effective approach is presented for the fabrication of line-patterned superwetting surface on sapphire by using a femtosecond laser. The fabricated surface shows a powerful capillary action by which water could be rapidly sucked into the as-prepared surface structures and spread even on the vertical surface against gravitation. In addition, the effects of the period and the dimensions of the microgrooves on surface wettability are investigated. It is demonstrated that the wettability can be significantly enhanced in the case when the sizable line-patterned nanostructures exist. This work could provide a facile and promising strategy for enhancing the performance of heat dissipation in the electronic devices substrate.
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Acknowledgments
This research is supported by the National Basic Research Program of China (973 Program) (Grant No. 2011CB013000) and National Natural Science Foundation of China (NSFC) (Grant Nos. 91123035, 91323301, and 51335011).
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Yin, K., Duan, J., Sun, X. et al. Formation of superwetting surface with line-patterned nanostructure on sapphire induced by femtosecond laser. Appl. Phys. A 119, 69–74 (2015). https://doi.org/10.1007/s00339-014-8957-3
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DOI: https://doi.org/10.1007/s00339-014-8957-3