Preparation of slippery surface based on femtosecond laser toward photo-induced droplet manipulation

被引：0

作者：

Xiao Y. ^{[1
]}

Zhou L. ^{[2
]}

Xu C. ^{[1
]}

Zhang R. ^{[1
]}

Wu S. ^{[2
]}

机构：

[1] College of Mechanical Engineering, Nantong Vocational University, Nantong

[2] School of Instrument Science and Opto-electronic Engineering, Hefei University of Technology, Hefei

来源：

Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2021年 / 38卷 / 02期

关键词：

Fe[!sub]3[!/sub]O[!sub]4[!/sub] nanoparticles; One-step femtosecond laser cross-scanning; Photo-induced manipulation; Slippery lubricant-infused porous surface; Wettability gradient;

D O I：

10.13801/j.cnki.fhclxb.20200713.003

中图分类号：

学科分类号：

摘要：

The droplet dynamic manipulation on photo-induced slippery lubricant-infused porous surface (SLIPS) has attracted tremendous attention because of its significant merits of contactless stimulation and excellent spatial and temporal control. However, the traditional fabrication methods by a combination of template-transfer and fluorination for a light-driven SLIPS are tedious and not environment-friendly. Accordingly, a kind of Fe3O4 nanoparticles(NPs)-doped nepenthes-inspired photothermal SLIPS was fabricated by femtosecond laser cross-scanning rapidly, which could readily steer diverse liquids towards arbitrary directions by utilizing droplet wettability gradient and internal Malangoni flow in the presence of unilateral near-infrared-irradiation-stimuli. Besides, the droplet manipulation performance was optimized by quantitatively analyzing the influence of Fe3O4-doped-content, lubricant rheological performance, diverse liquid species on sliding velocity and response time. The smart manipulator for controllable droplet directions and routes can be utilized to give an impetus to the extensive application of lab-on-a-chip, microfluidics and biomedical engineering and so on. Copyright ©2021 Acta Materiae Compositae Sinica. All rights reserved.

引用

页码：517 / 525

页数：8

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