Journal
RSC ADVANCES
Volume 9, Issue 12, Pages 6650-6657Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ra08328b
Keywords
-
Categories
Funding
- National Key Research and Development Program of China [2017YFB1104700]
- National Science Foundation of China [51335008, 61875158, 61805192]
- China Postdoctoral Science Foundation [2016M600786]
- Collaborative Innovation Center of Suzhou Nano Science and Technology
Ask authors/readers for more resources
Surfaces that can strongly repel various complex liquids, not just pure water, are highly desirable and the fabrication of such surfaces still remains a huge challenge because the liquids one wants to repel usually have a complex chemical composition, viscosity, and concentration. Here, a superhygrophobic surface microstructure was created on a polytetrafluoroethylene (PTFE) surface by femtosecond laser treatment. The laser-ablated surface was composed of a micro/nanoscale hierarchical structure and micropores with a certain degree of re-entrant curvature. After femtosecond laser ablation, the sample surface is directly endowed with superhygrophobicity and has great ability to repel various pure and complex liquids, such as water, 10000 ppm bovine serum albumin, cola, 10000 ppm glucose, juice, and saline. It is because the combined effect of the ultralow surface energy of the PTFE material, the laser-induced hierarchical rough microstructure, and the partly re-entrant surface curvature of the porous structure allows the complex liquid droplets to be at the robust Cassie state on the laser-induced surface microstructure. Such superhygrophobic surfaces can be potentially applied in cell engineering, medical instruments, food packaging, microfluidics technology, chemical engineering, and so on.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available