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Effect of Core Liquid Surface Tension on the Liquid Marble Shell
Advanced Materials Interfaces ( IF 4.3 ) Pub Date : 2020-11-23 , DOI: 10.1002/admi.202001591 Pradip Singha 1 , Nhat‐Khuong Nguyen 1 , Kamalalayam Rajan Sreejith 1 , Hongjie An 1 , Nam‐Trung Nguyen 1 , Chin Hong Ooi 1
Advanced Materials Interfaces ( IF 4.3 ) Pub Date : 2020-11-23 , DOI: 10.1002/admi.202001591 Pradip Singha 1 , Nhat‐Khuong Nguyen 1 , Kamalalayam Rajan Sreejith 1 , Hongjie An 1 , Nam‐Trung Nguyen 1 , Chin Hong Ooi 1
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Liquid marble is a non‐wetting droplet coated with micro‐ or nanometer sized particles and exhibits great versatility as a standalone system. Unique features such as low evaporation rate, low friction, and a porous shell enable it to be a potential tool for gas sensing, cell culture, and drug delivery. With the growing number of interests in these fields, it is important to understand the structure of the liquid marble shell and how it behaves with the variation of the surface tension of the core liquid. This paper investigates the thickness and the mass of liquid marble shell at various surface tension values. Surfactant mediated surface tension reduction allows the encapsulating particles to penetrate more into the core liquid and decreases the shell thickness. The shell thickness decreases significantly with the surface tension, whereas the mass remains almost constant. Interestingly, the trend reverses with further decrease of the surface tension. In this regime, both the thickness and the mass of the shell increase due to interfacial jamming. This work provides a new insight into understanding the contribution of the particle distribution at the shell for the stability and the measurement of the effective surface tension of a liquid marble.
中文翻译：
核心液体表面张力对液体大理石壳的影响
液体大理石是覆盖有微米或纳米尺寸颗粒的非润湿性液滴，作为独立系统具有很大的通用性。低蒸发率，低摩擦和多孔外壳等独特功能使其成为气体传感，细胞培养和药物输送的潜在工具。随着在这些领域中兴趣的增加，了解液体大理石外壳的结构以及其如何随着芯部液体的表面张力的变化而表现是很重要的。本文研究了在各种表面张力值下液体大理石壳的厚度和质量。表面活性剂介导的表面张力降低允许包封颗粒更多地渗透到芯液中并减小壳的厚度。外壳厚度随表面张力而显着降低，而质量几乎保持恒定。有趣的是，趋势随着表面张力的进一步降低而逆转。在这种情况下，由于界面阻塞，壳的厚度和质量均增加。这项工作为了解颗粒在壳体上的分布对液体大理石的稳定性和有效表面张力的测量提供了新的见解。
更新日期：2020-11-23
中文翻译：
核心液体表面张力对液体大理石壳的影响
液体大理石是覆盖有微米或纳米尺寸颗粒的非润湿性液滴，作为独立系统具有很大的通用性。低蒸发率，低摩擦和多孔外壳等独特功能使其成为气体传感，细胞培养和药物输送的潜在工具。随着在这些领域中兴趣的增加，了解液体大理石外壳的结构以及其如何随着芯部液体的表面张力的变化而表现是很重要的。本文研究了在各种表面张力值下液体大理石壳的厚度和质量。表面活性剂介导的表面张力降低允许包封颗粒更多地渗透到芯液中并减小壳的厚度。外壳厚度随表面张力而显着降低，而质量几乎保持恒定。有趣的是，趋势随着表面张力的进一步降低而逆转。在这种情况下，由于界面阻塞，壳的厚度和质量均增加。这项工作为了解颗粒在壳体上的分布对液体大理石的稳定性和有效表面张力的测量提供了新的见解。
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