Thermal-Responsive Anisotropic Wetting Microstructures for Manipulation of Fluids in Microfluidics

CORC > 长春光学精密机械与物理研究所 > 中国科学院长春光学精密机械与物理研究所 > 中科院长春光机所知识产出

	Thermal-Responsive Anisotropic Wetting Microstructures for Manipulation of Fluids in Microfluidics
	Yu, N. Z.; S. L. Wang; Y. S. Liu; P. H. Xue; P. Ge; J. J. Nan; S. S. Ye; W. D. Liu; J. H. Zhang and B. Yang
刊名	Langmuir
	2017
卷号	33 期号:2
英文摘要	We show morphology-patterned stripes modified by thermal-responsive polymer for smartly guiding, flow motion of fluid in chips. With a two-step modification process, we fabricated PNIPAAm-modified Si stripes on silicon: slides, which were employed as substrates for fluid manipulation in microchannels. When the system temperature switches between above and below the lower critical solution temperature (LCST) of PNIPAAm, the wettability of the substrates also switches between strong anisotropy and weak anisotropy, which resulted in anisotropic (even unidirectional) flow and isotropic flow behavior of liquid in microchannels. The thermal-responsive flow motion of fluid in the chip is influenced by the applied pressure, the thickness of PNIPAAm, and dimension of the microchannels. Moreover, we measured the feasible applied pressure scopes under different structure factors. Because of the excellent reversibility and quick switching speed, the chip could be used as a thermal-responsive microvalve. Through tuning the system temperature and adding the assistant gas, we realized successive "valve" function. We believe that the practical and simple chip could be widely utilized in medical detection, immunodetection, protein analysis, and cell cultures.
语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/59401]
专题	长春光学精密机械与物理研究所_中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Yu, N. Z.,S. L. Wang,Y. S. Liu,et al. Thermal-Responsive Anisotropic Wetting Microstructures for Manipulation of Fluids in Microfluidics[J]. Langmuir,2017,33(2).
APA	Yu, N. Z..,S. L. Wang.,Y. S. Liu.,P. H. Xue.,P. Ge.,...&J. H. Zhang and B. Yang.(2017).Thermal-Responsive Anisotropic Wetting Microstructures for Manipulation of Fluids in Microfluidics.Langmuir,33(2).
MLA	Yu, N. Z.,et al."Thermal-Responsive Anisotropic Wetting Microstructures for Manipulation of Fluids in Microfluidics".Langmuir 33.2(2017).