期刊
MICROFLUIDICS AND NANOFLUIDICS
卷 14, 期 1-2, 页码 171-176出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s10404-012-1035-2
关键词
Femtosecond laser; Ablation; Hydrophilic; Hydrophobic; Passive valve; Microfluidics
资金
- European Commission (microFLUID FP7 Project) [ICT-2007-224205]
- Regione Lombardia (MINILAB project) [MAN-18]
- Fondazione CARIPLO [2010-0635]
A solvent vapor treatment was applied to femtosecond-laser-ablated microchannels in PMMA to selectively restore the original hydrophilic wetting behavior of the pristine surface. The hydrophobic surface of the microchannels from the submicron porosity induced by ablation becomes smoother and more transparent after the treatment. This simple and low-cost method, together with suitable masking, can produce wettability patterns that may be exploited to develop passive microfluidic elements such as valves and mixers.
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