Ionic-Liquid-Infused Nanostructures as Repellent Surfaces

Galvan, Yaraset; Phillips, Katherine R.; Haumann, Marco; Wasserscheid, Peter; Zárraga, Ramón; Vogel, Nicolas

doi:10.1021/acs.langmuir.7b03993

Cited by 30 publications

(35 citation statements)

References 59 publications

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“…Silicone oils have an additional advantage, due to their polymeric/oligomeric nature, of being able to have a fairly wide range of viscosities while maintaining their general chemical character, permitting modulation of the force required to move droplets along the surface . Ionic liquids are another class of medically relevant, highly tunable fluids that have recently been used to create liquid‐infused surfaces . In addition to pharmaceutical‐grade oils, some food‐grade oils have also been explored for creating liquid‐infused surfaces.…”

Section: Design Parametersmentioning

confidence: 99%

“…Although relatively low molecular weight medically relevant liquids such as perfluorodecalin and Vitreon can completely evaporate from a surface in as little as 30 min, this can be mitigated by storing the samples under a buffer or other liquid solution until they are needed (Figure C). Other approaches to limiting evaporation include the selection of liquids such as high‐viscosity medical‐grade silicone oils or ionic liquids with ultralow vapor pressure . In many cases, an intermediate viscosity may prove sufficient, as a function of the expected method of use.…”

Section: Design Parametersmentioning

confidence: 99%

“…The authors did note that there was some staining on the liquid‐infused surface, however, suggesting that the layer formed by the liquid–solid combination chosen may not have been able to adequately withstand the forces associated with biting and chewing. To overcome this, continued developments in creating more durable, self‐replenishing, or additionally bioactive materials could be leveraged.…”

Section: Applicationsmentioning

confidence: 99%

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Designing Liquid‐Infused Surfaces for Medical Applications: A Review

et al. 2018

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The development of new technologies is key to the continued improvement of medicine, relying on comprehensive materials design strategies that can integrate advanced therapeutic and diagnostic functions with a variety of surface properties such as selective adhesion, dynamic responsiveness, and optical/mechanical tunability. Liquid-infused surfaces have recently come to the forefront as a unique approach to surface coatings that can resist adhesion of a wide range of contaminants on medical devices. Furthermore, these surfaces are proving highly versatile in enabling the integration of established medical surface treatments alongside the antifouling capabilities, such as drug release or biomolecule organization. Here, the range of research being conducted on liquid-infused surfaces for medical applications is presented, from an understanding of the basics behind the interactions of physiological fluids, microbes, and mammalian cells with liquid layers to current applications of these materials in point-of-care diagnostics, medical tubing, instruments, implants, and tissue engineering. Throughout this exploration, the design parameters of liquid-infused surfaces and how they can be adapted and tuned to particular applications are discussed, while identifying how the range of controllable factors offered by liquid-infused surfaces can be used to enable completely new and dynamic approaches to materials and devices for human health.

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Section: Design Parametersmentioning

confidence: 99%

Section: Design Parametersmentioning

confidence: 99%

Section: Applicationsmentioning

confidence: 99%

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Designing Liquid‐Infused Surfaces for Medical Applications: A Review

et al. 2018

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“…The evaporation of lubricant can lead to SLIPS′ fast degradation and loss of its slippery character. Increase of molecular weight, cross-linking of the lubricant, or use of ionic liquids [51,52] can reduce lubricant volatility. This is especially important for high-temperature or high-vacuum applications.…”

Section: Stabilitymentioning

confidence: 99%

Slippery Lubricant‐Infused Surfaces: Properties and Emerging Applications

Ueda

Paulssen

et al. 2018

Adv Funct Materials

180

138

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Bioinspired lubricant-infused surfaces exhibit various unique properties attributed to their liquid-like and molecularly smooth nature. Excellent liquid repellency and "slippery" properties, self-healing, antiicing, anticorrosion characteristics, enhanced heat transfer, antibiofouling, and cell-repellent properties have been already demonstrated. This progress report highlights some of the recent developments in this rapidly growing area, focusing on properties of lubricant-infused surfaces, and their emerging applications as well as some future challenges.coatings. [8] In order to solve the abovementioned limitations of traditional superhydrophobic and superoleophobic surfaces, Quéré, Aizenberg, and Varanasi proposed bioinspired slippery liquidinfused porous surface (SLIPS) or lubricant-impregnated surfaces combining the mechanical stability of a solid substrate with the liquid-like properties and molecularly smoothness of the lubricant interface. [9a-d] It should be noted that stabilization of a lubricant layer on solid surfaces by forming a thin polymer film that can be swollen in the lubricant was introduced in 1988 by Karakelle and Zdrahala from Bekton, Dickinson and Company.[9e] They also demonstrated excellent long-term stability, liquid repellency, and proposed various medical applications of lubricant-impregnated surfaces. SLIPSs mimic the Nepenthes pitcher plant surface, [10] which is textured and can be lubricated with an aqueous solution. [11] The unique slippery character of the [9a] Nepenthes pitcher plant's surface resulting from water lubrication helps it capture insects sliding into its interior. To mimic the Nepenthes pitcher plant surface, a lubricating hydrophobic liquid can be infused into different hydrophobic porous or rough substrates to form SLIPS. [9] By matching the surface energy of the underlying porous substrate and the hydrophobic lubricant, the liquid can be stabilized on the surface of the substrate to form SLIPS. [9a] Depending on the impregnated lubricant, SLIPSs possess excellent repellency and drop mobility to a broad range of liquids including low surface tension liquids, and complex fluids such as blood or cell medium. [9a] This liquid repellency as well as SLIPS′ self-healing properties are due to the mobility of the lubricant trapped inside the porous surface structures. [12] Lubricant-infused surfaces demonstrated icephobic, stainresistant, biofilm-or cell-repellent or marine antibiofouling properties as well as tolerance to high pressure and transparency. [9,13] All of these unique properties make SLIPS interesting for the development of novel functional materials and various practical applications.The goal of this progress report is not to comprehensively review this broad and dynamic research field but rather highlight selected important aspects that have been less reviewed so far despite their potential. Some important and related papers could not be cited due to the length limitations. We also refer readers to several excellent reviews covering applications of ...

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“…8 High mobility of a liquid droplet is particularly obtained when the lubricant completely wets the surface texture, as pinning of the droplet on the surface is negated by the intervening lubricant layer. However, the dependency on a fully wetting lubricant often limits the implementation of LIS, both due to the difficulty of finding the suitable lubricant for the desired applications, 3,9 and due to the possibility of lubricant depletion. [10][11][12][13][14] On the other hand, LIS with partially wetting lubricant have increasingly attracted interest, especially with a number of external stimuli shown to allow reversible change of wetting states from slippery to sticky (see for example the recent review ref.…”

Section: Introductionmentioning

confidence: 99%