Multiphase Designer Droplets for Liquid‐Liquid Extraction

Jokinen, Ville; Kostiainen, Risto; Sikanen, Tiina

doi:10.1002/adma.201202715

Cited by 29 publications

(24 citation statements)

References 40 publications

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“…The ability to pattern any two liquids on the same substrate next to each other has various applications, e.g. in liquid-liquid extractions, [55] chemical process design, [56], [57] and microfabrication research, such as tuneable micro-lenses [58], [59] to list a few. One of the applications is to use such liquid patterning to stably position an oil shield around an aqueous compartment to avoid evaporation of small aqueous reservoirs.…”

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confidence: 99%

Formation of Liquid–Liquid Micropatterns through Guided Liquid Displacement on Liquid‐Infused Surfaces

Paulssen

Feng

Pini

et al. 2018

Adv Materials Inter

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Here we demonstrate a method to pattern liquids of varying surface tension and composition into droplets by utilizing slippery liquid-infused surfaces prepared on chemically-patterned substrates. We study the capability of different liquids to displace the lubricant from higher surface energy regions and show that both high and low surface tension liquids can imbibe the polymer, thereby forming droplets sharply following underlying surface energy patterns. For all liquids tested, droplet arrays of arbitrary shapes of each liquid were formed with precision down to 50 µm. By changing the chemical patterning from fluorinated to aliphatic groups, patterns of mineral and silicone oils were created. Finally, we demonstrate formation of two-dimensional micropatterns of three-phase liquid systemsfluorinated, organic, and aqueous phases. Liquid patterning on solid surfaces is an essential process in micro-and nano-fabrication. It has been used for microelectromechanical systems (MEMS)-fabrication, [1],[2],[3] microfluidicdevice design [4],[5] bio-scaffold creation, [6] or high-throughput screening efforts.

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confidence: 99%

Formation of Liquid–Liquid Micropatterns through Guided Liquid Displacement on Liquid‐Infused Surfaces

Paulssen

Feng

Pini

et al. 2018

Adv Materials Inter

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“…In contrast, patterned HL/HB surfaces tend to work regardless of the way the water is introduced on the surface. HL/HB patterning can be utilized in applications, including surface-directed capillary flow [7], controlled biomolecular adsorption, microgel synthesis, liquid-assisted molding, liquid-liquid extraction [9], self-alignment, and humidity extraction.…”

Section: Key Research Findingsmentioning

confidence: 99%

Hydrophilic and Hydrophobic Patterning

Jokinen

2013

Encyclopedia of Microfluidics and Nanofluidics

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“…29,30 However, creating open microfluidics by tuning the wettability of surfaces typically requires sophisticated processing, which is unamenable to scalable manufacturing processes and often requires costly cleanroom processing. These fabrication processes include sophisticated surface engineering techniques such as photolithography with UV masks 26,31,32 ; chemical modification (Self-Assembly Monolayer chemistry); deep reactive ion etching 33,34 ; titanium oxide nanotube fabrication in conjunction with ink patterning with contact pen drawing 35 43 , thermal management 44 , filtration 45 , and biosensing 46,47 , due to its unique and advantageous properties (e.g., high electrical and thermal conductivity, surface area, as well as mechanical and thermal stability) and ease of fabrication.…”

Section: Introductionmentioning

confidence: 99%