DataVXACS Applied Materials & InterfacesPaper
journal article·2021-01-20

Vapor-Induced Liquid Collection and Microfluidics on Superlyophilic Substrates

Zheng Li, Zhandong Huang, Zheren Cai, Huizeng Li, An Li, Yali Qiao, Jun Yang, Yanlin Song

ACS Applied Materials & Interfaces· Volume 13· Issue 2
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Source abstract

Abstract

Liquid manipulation on solid surfaces has attracted a lot of attention for liquid collection and droplet-based microfluidics. However, manipulation strategies mainly depend on chemical modification and artificial structures. Here, we demonstrate a feasible and general strategy based on the self-shrinkage of the droplet induced via specific vapors to efficiently collect liquids and flexibly carry out droplet-based reactions. The vapor-induced self-shrinkage is driven by Marangoni flow originating from molecular adsorption and diffusion. Under a specific vapor environment, the self-shrinking droplet exhibits unique features including reversible responsiveness, high mobility, and autocoalescence. Accordingly, by building a specific vapor environment, the thin liquid films and random liquid films on superlyophilic substrates can be recovered with a collection rate of more than 95%. Moreover, the vapor system can be used to construct a high-efficiency chemical reaction device. The findings and profound understandings are significant for the development of the liquid collection and droplet-based microfluidics.
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Research context

OpenAlex topics: Surface Modification and Superhydrophobicity · Nanomaterials and Printing Technologies · Innovative Microfluidic and Catalytic Techniques Innovation

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing 100190, P. R. China

Department of Mechanical and Materials Engineering, University of Western Ontario, London, Ontario N6A 5B9, Canada

School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, P. R. China

Funding

Ministry of Science and Technology of the People's Republic of China · K. C. Wong Education Foundation · China Postdoctoral Science Foundation · National Natural Science Foundation of China · Beijing National Laboratory for Molecular Sciences

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