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Liquid marble (LM) is a droplet covered with jammed low-wettability fine particles, which exhibits non-sticking to contacting media while keeping its fluid reconfigurability. While the LM facilitated the handling of the droplet, LM breaks down upon squeezing, which limits the robust handling. Here, we show that LM exhibits high compression stability when the jammed particles distort the liquid surface to form sub- to single-micron roughness. We find that the particle layers’ distortion increases with the evaporation of the inner liquid. Thus, we regulated the evaporation degree of the droplet by varying the mixing ratio of the non-volatile and volatile liquids. First, we show the regulation of the mixing ratio and its effect on the equilibrium LM static shape and particle layer structure. Then, the effect of the LMs’ surface structure on their mechanical response is explored. When 90% of the inner liquid is evaporated, the submicron wrinkle structure appears on the LM surface. We name the LM with the wrinkle structure “wrinkled liquid marble (WLM).” The WLM exhibited high compression stability and significantly higher resilience force than the droplet one. We believe this work helps the practical use of the LMs by improving their mechanical stability. Moreover, the fundamental understanding of the particle layer stability at the interface can be advanced.

権利情報:

• In Copyright
  

  This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Mizuki Tenjimbayashi; Mechanically robust wrinkled liquid marbles. Appl. Phys. Lett. 1 March 2025; 126 (11): 111602 and may be found at https://doi.org/10.1063/5.0256903.

キーワード: Liquid marble, wrinkle, mechanical robustness

刊行年月日: 2025-03-01

出版者: AIP Publishing

掲載誌:

• APPLIED PHYSICS LETTERS (ISSN: 10773118) vol. 126 issue. 11 111602

研究助成金:

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5371

公開URL: https://doi.org/10.1063/5.0256903

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更新時刻: 2025-03-26 17:26:19 +0900

MDRでの公開時刻: 2025-03-26 17:26:20 +0900