New frontiers in anisotropic fluid–particle composites

Klein, Susanne; Raynes, Peter; Sambles, J. R.

doi:10.1098/rsta.2012.0510

Cited by 1 publication

(2 citation statements)

References 13 publications

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“…Such smectic shells can be used to study director textures on curved surfaces in the same way as in earlier work on nematic [37][38][39][40][41][42]51 and smectic shells. [37][38][39][40][41]52 Moreover, one can use these shells to transport reagents in an aqueous environment. Heating them into the nematic phase is a way to subsequently open such shells and release the internal fluid, or to coalesce them.…”

Section: ■ Discussion and Summarymentioning

confidence: 99%

“…The target drop or any pool of target liquid can be used to collect and store large numbers of coated droplets for further experiments, processing, or analysis. Such smectic shells can be used to study director textures on curved surfaces in the same way as in earlier work on nematic − , and smectic shells. − , Moreover, one can use these shells to transport reagents in an aqueous environment. Heating them into the nematic phase is a way to subsequently open such shells and release the internal fluid, or to coalesce them.…”

Section: Discussion and Summarymentioning

confidence: 99%

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Microdroplets Impinging on Freely Suspended Smectic Films: Three Impact Regimes

Dölle

Stannarius

2015

Langmuir

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We employ high-speed video imaging to study microdroplets of a few picoliters volume impacting freely suspended smectic liquid-crystal films. Depending on the impact parameters, in particular, droplet velocity and mass, three different regimes are observed such as trapping, rebounding, and tunneling. Fast droplets penetrate the films completely. After they have passed the film, they are coated with a layer of film material while the original smectic film remains intact. Droplets in a certain intermediate velocity range bounce back from the film. After impact, the film deforms and hurls the droplet back, depleting a substantial share of the initial kinetic energy. Slow droplets are caught and embedded in the film. During impact and tunneling, an appreciable amount of kinetic energy is lost. The energy is partially dissipated during droplet impact and during subsequent mechanical vibrations and oscillations of the film and the droplet. The tunneling process of high-speed droplets can be exploited to prepare smectic shells of well-defined sizes that enclose picoliters of an immiscible liquid.

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