How coatings with hydrophobic particles may change the drying of water droplets: incompressible surface versus porous media effects

Laborie, B.; Lachaussée, Florent; Lorenceau, Élise; Rouyer, Florence

doi:10.1039/c3sm50164g

Cited by 58 publications

(79 citation statements)

References 31 publications

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“…Liquid marbles are non-stick droplets encapsulated with micro-or nano-scaled solid particles (Mahadevan 2001;Aussillous and Quéré 2001, 2004, 2006 Since liquid marbles were introduced in the pioneering works of Aussillous and Quèrè (2001), they have been exposed to intensive theoretical and experimental research (McHale et al 2009;Arbatan and Shen 2011;Bormashenko et al 2009aBormashenko et al , 2011Bormashenko et al , 2013aPlanchette et al 2012Planchette et al , 2013Laborie et al 2013). An interest in liquid marbles arises from both their very unusual physical properties and their promising applications.…”

Section: Introductionmentioning

confidence: 99%

Liquid marbles containing petroleum and their properties

et al. 2015

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Liquid marbles (non-stick droplets) containing crude petroleum are reported. Liquid marbles were obtained by use of fluorinated decyl polyhedral oligomeric silsequioxane (FD-POSS) powder. Marbles containing crude petroleum remained stable on a broad diversity of solid and liquid supports. The effective surface tension of marbles filled with petroleum was established. The mechanism of friction of the marbles is discussed. Actuation of liquid marbles containing crude petroleum with an electric field is presented.

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Section: Introductionmentioning

confidence: 99%

Liquid marbles containing petroleum and their properties

et al. 2015

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“…Besides the size, the preparation of more concentrated cc-LMs will mainly be limited by the availability of cells and the volume restrictions derived from achieving the initial stock cell suspension. It is worth noting that the undesired liquid evaporation that typically occurs in LM and may limit their practical use in certain applications 41,42 is not a critical issue in our case because evaporation under frozen conditions is negligible.…”

Section: Resultsmentioning

confidence: 98%

Mammalian Cell Cryopreservation by Using Liquid Marbles

Serrano

Nardecchia

Gutiérrez

et al. 2015

ACS Appl. Mater. Interfaces

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Liquid marbles (LMs) are nonsticky droplets covered by micro- or nanometrically scaled particles and obtained by simply rolling small amounts of a liquid in a very hydrophobic powder. Since pioneer work by Aussillous and Quéré, a wide palette of hydrophobic materials for the preparation of LMs, as well as potential applications, have been reported. Because of the bioinspired origin of this concept, the applicability of LMs in biomedicine is gaining increasing attention, with remarkable advances in their use as microbioreactors for blood typing, drug screening, and tumor growth, among others. Herein, we explore the novel use of LMs as a biotechnological tool for the cryopreservation of mammalian cells as an alternative to conventional methods, which typically require the use of cryopreservant agents that commonly associate with some degree of cell toxicity. Murine L929 fibroblasts, a reference cell line for cytotoxicity studies, and poly(tetrafluoroethylene), a hydrophobic polymer widely used in cardiovascular surgery, were selected for the preparation of the cell-containing LMs. Our results reveal that there is a safe range of droplet volumes and cell densities that can be successfully used to cryopreserve mammalian cell lines and recover them after thawing without significantly affecting major cellular parameters such as adhesion, morphology, viability, proliferation, and cell cycle. We envision that progress in the exploration of cell-containing LMs could also open their impact as microreactors for the miniaturization of cytotoxicity procedures of drugs and materials in which powerful tools for cell evaluation such as flow cytometry could be used because of the elevated amount of cells handled.

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“…Indeed, similar objects, i.e. drops coated by hydrophobic particles, were observed to evaporate faster than a droplet with the same surface 26 . To characterize the evaporation of our drops, we measured the variation of the volume of the drops as a function of time using image analysis.…”

Section: Influence Of the Monolayer On The Evaporation Ratementioning

confidence: 98%

Organization of microbeads in Leidenfrost drops

2014

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We investigated the organization of micrometric hydrophilic beads (glass or basalt) immersed in Leidenfrost drops. Starting from a large volume of water compared to the volume of the beads, while the liquid evaporates, we observed that the grains are eventually trapped at the interface of the droplet and accumulate. At a moment, the grains entirely cover the droplet. We measured the surface area at this moment as a function of the total mass of particles inserted in the droplet. We concluded that the grains form a monolayer around the droplet assuming (i) that the packing of the beads at the surface is a random close packing and (ii) that the initial surface of the drop is larger than the maximum surface that the beads can cover. Regarding the evaporation dynamics, the beads are found to reduce the evaporation rate of the drop. The slowdown of the evaporation is interpreted as being the consequence of the dewetting of the particles located at the droplet interface which make of the effective surface of evaporation smaller. As a matter of fact, contact angles of the beads with the water deduced from the evaporation rates are consistent with contact angles of beads directly measured at the air -water interface in a container.

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How coatings with hydrophobic particles may change the drying of water droplets: incompressible surface versus porous media effects

Cited by 58 publications

References 31 publications

Liquid marbles containing petroleum and their properties

Liquid marbles containing petroleum and their properties

Mammalian Cell Cryopreservation by Using Liquid Marbles

Organization of microbeads in Leidenfrost drops

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