Remote, selective, and in situ manipulation of liquid droplets on a femtosecond laser-structured superhydrophobic shape-memory polymer by near-infrared light
| العنوان: | Remote, selective, and in situ manipulation of liquid droplets on a femtosecond laser-structured superhydrophobic shape-memory polymer by near-infrared light |
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| المؤلفون: | Xue Bai, Xun Hou, Feng Chen, Yao Fang, Jiale Yong, Chao Shan |
| المصدر: | Science China Chemistry. 64:861-872 |
| بيانات النشر: | Springer Science and Business Media LLC, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | chemistry.chemical_classification, Materials science, Microfluidics, Composite number, Nanotechnology, 02 engineering and technology, General Chemistry, Polymer, 010402 general chemistry, 021001 nanoscience & nanotechnology, Laser, 01 natural sciences, 0104 chemical sciences, law.invention, Shape-memory polymer, chemistry, law, Femtosecond, Wetting, Microreactor, 0210 nano-technology |
| الوصف: | Droplet manipulation plays a significant role in the fields of biomedical detection, microfluidics, and chemical engineering. However, it still remains a great challenge to simultaneously achieve remote, selective, and in situ droplet manipulation on the same surface. Here, Fe3O4 nanoparticles were doped in a shape-memory polymer (SMP) to prepare a photothermal-responsive Fe3O4-SMP composite which showed remarkable near-infrared (NIR) light-triggered shape-memory property. Superhydrophobic micropillar array was constructed on such Fe3O4-SMP composite through femtosecond laser microfabrication and fluoroalkylsilane modification. The surface wettability of the as-prepared surface can transform from a low-adhesive sliding state to a high-adhesive pinning state as the micropillars are deformed by pressing. Interestingly, the deformed micropillars can stand up and restore to their original morphology under remote NIR light irradiation, resulting in the reversible and repeatable recovery of the ultralow-adhesive superhydrophobicity. With such light-triggered wettability switching, the droplets pinning on the sample surface can be remotely, selectively, and in situ released. Furthermore, the superhydrophobic Fe3O4-SMP surface is successfully applied in lossless liquid transfer, selective droplet release, and droplet-based microreactor. The as-fabricated superhydrophobic surfaces with NIR light-controlled reversible wettability will hold great promise in the fields of liquid manipulation, lab-on-a-chip, and microfluidics. |
| تدمد: | 1869-1870 1674-7291 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::8f9331430f85cf0678df45bed7b6e8ffTest https://doi.org/10.1007/s11426-020-9940-6Test |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi...........8f9331430f85cf0678df45bed7b6e8ff |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 18691870 16747291 |
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