Formation mechanism of hierarchical structure of crystal morphology in a sessile droplet

Morinaga, Kouki; Tani, Marie; Kurita, Rei

doi:10.1103/physrevresearch.2.013098

Cited by 8 publications

(4 citation statements)

References 27 publications

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“…Since OTP has a large density difference be-tween liquid and crystal [12], the density of the liquid at the interface decreases, especially at the grain boundary. Thus, cavitation can occur due to the negative pressure [13,14]. This scenario is consistent with the fact that most bubbles disappear when the crystal melts.…”

Section: Filamentous Crystal Growth In Otpsupporting

confidence: 77%

Filamentous Crystal Growth In Organic Liquids And Selection Of Crystal Morphology

Yashima

Tani

Kurita

2022

Preprint

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Filamentous crystals such as whisker crystals are often seen not only in metallic liquids, but also in organic liquids and solutions. They are interested as reinforce materials. However, it remains challenging to induce filamentous crystals due to an incomplete understanding of the mechanisms behind their formation. In this paper, we investigate filamentous crystal growth in viscous organic liquids. It is found that filamentous crystals grow via an extraordinary dynamical path, where the molecules locally evaporate to bubbles and then redeposite to the tip of growing crystalline filaments. We also succeeded in controlling whether filamentous or faceted crystal growth is selected by inducing or suppressing the bubbles.

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Section: Filamentous Crystal Growth In Otpsupporting

confidence: 77%

Filamentous Crystal Growth In Organic Liquids And Selection Of Crystal Morphology

Yashima

Tani

Kurita

2022

Preprint

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“…A similar pattern is obtained when surfactant and surface-absorbed polymer are added to a binary mixture [39]. When salt is added, its crystallization is observed in the deposit in some cases [40,41,42]. For more details about the coffee-ring effect suppression methods to obtain uniform deposits, please refer to [43].…”

Section: Introductionsupporting

confidence: 56%

Applying Droplets and Films in Evaporative Lithography

Kolegov,

Barash

2020

Preprint

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The review covers experimental results of evaporative lithography and analyzes existing mathematical models of this method. Evaporating droplets and films are applied in different fields, such as cooling of heated surfaces of electronic devices, diagnostics in health care, creation of transparent conductive coatings on flexible substrates, surface patterning. A method called evaporative lithography emerged after establishing the connection between the coffee ring effect taking place in drying colloidal droplets, and naturally occuring inhomogeneous vapor flow densities from fluid-vapor interfaces. Essential control of the colloidal particle deposit patterns is achieved in this method by producing ambient conditions that induce a nonuniform evaporation profile from the colloidal liquid surface. Evaporative lithography is part of a wider field, which is known as "Evaporative-induced self-assembly" (EISA). EISA involves methods based on the contact line processes, methods employing particle interaction effects and evaporative lithography. As a rule, evaporative lithography is a flexible and single-stage process with such advantages as simplicity, low price and possibility of application to almost any substrate without pretreatment. Since no mechanical impact on a template is present in evaporative lithography, the template integrity is preserved in the process. The method is also useful for creating materials with localized functions, such as slipperiness and self-healing. For these reasons, evaporative lithography attracts increasing attention and has a number of noticeable achievements at present. We also analyze limitations of the approach and ways of its further development.

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“…Since the density should be conserved locally, the density of the liquid at the interface decreases, especially at the region sandwiched between the crystals. Thus, cavitation can occur due to the negative pressure 13 , 14 . This scenario is consistent with the fact that most bubbles disappear when the crystal melts.…”

Section: Resultsmentioning

confidence: 99%

Filamentous crystal growth in organic liquids and selection of crystal morphology

Yashima

Tani

Kurita

2022

Sci Rep

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Filamentous crystals such as whisker crystals are often seen not only in metallic liquids, but also in organic liquids and solutions. They are interesting as reinforce materials. However, it remains challenging to induce filamentous crystals due to an incomplete understanding of the mechanisms behind their formation. In this paper, we investigate filamentous crystal growth in viscous organic liquids. It is found that filamentous crystals grow via an extraordinary dynamical path, where the molecules locally evaporate to bubbles and then redeposite to the tip of growing crystalline filaments. We also succeeded in controlling whether filamentous or faceted crystal growth is selected by inducing or suppressing the bubbles.

show abstract

Formation mechanism of hierarchical structure of crystal morphology in a sessile droplet

Cited by 8 publications

References 27 publications

Filamentous Crystal Growth In Organic Liquids And Selection Of Crystal Morphology

Filamentous Crystal Growth In Organic Liquids And Selection Of Crystal Morphology

Applying Droplets and Films in Evaporative Lithography

Filamentous crystal growth in organic liquids and selection of crystal morphology

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