Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 10, Issue 8, Pages 7497-7503Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b19431
Keywords
microplasma jet; hydrophilic pattern; superhydrophobic aluminum surface; water adhesion; droplet transportation
Funding
- National Basic Research Program of China [2015CB057304]
- Fundamental Research Funds for the Central Universities
- National Natural Science Foundation of China (NSFC) [51605078, 51305060]
Ask authors/readers for more resources
Superhydrophobic surfaces with hydrophilic patterns have great application potential in various fields, such as microfluidic systems and water harvesting. However, many reported preparation methods involve complicated devices and/or masks, making fabrication of these patterned surfaces time-consuming and inefficient. Here, we propose a highly efficient, simple, and maskless microplasma jet (MPJ) treatment method to prepare hydrophilic patterns such as dots, lines, and curves on superhydrophobic aluminum substrates. Contact angles, sliding angles, adhesive forces, and droplet impact behavior of the created patterns are investigated and analyzed. The prepared dot patterns exhibit great water adhesion, whereas the line patterns show anisotropic adhesion. Additionally, the MPJ treatment does not obviously change the surface structures, which makes it possible to achieve repeatable patterning on one substrate. The adhesion behavior of these patterns could be adjusted using MPJs with different diameters. MPJs with larger diameters are efficient for the creation of patterns with high water adhesion, which can be potentially used for open-channel lab-on-chip systems (e.g., continuous water transportation), whereas MPJs with smaller diameters are preferable in preparing patterns with low water adhesion for diverse applications in biomedical fields (e.g., lossless liquid droplet mixing and cell screening).
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