Non-Classical Euler Buckling and Brazier Instability in Cylindrical Liquid Droplets

被引：1
|
作者：
Hsu, Emery [1 ]
Lee, Daeyeon [1 ]
Sloutskin, Eli [2 ,3 ]
机构：
[1] Univ Penn, Dept Chem & Biomol Engn, Philadelphia, PA 19104 USA
[2] Bar Ilan Univ, Phys Dept, IL-529002 Ramat Gan, Israel
[3] Bar Ilan Univ, Inst Nanotechnol & Adv Mat, IL-529002 Ramat Gan, Israel
来源：
NANO LETTERS | 2024年 / 24卷 / 28期
基金：
美国国家科学基金会;
关键词：
interfacial freezing; two-dimensional crystal; elasticity; emulsion; self-faceting; self-shaping; 2-DIMENSIONAL CRYSTALS; INTERFACES;
D O I：
10.1021/acs.nanolett.4c02075
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Crystalline monolayers prevalent in nature and technology possess elusive elastic properties with important implications in fundamental physics, biology, and nanotechnology. Leveraging the recently discovered shape transitions of oil-in-water emulsion droplets, upon which these droplets adopt cylindrical shapes and elongate, we investigate the elastic characteristics of the crystalline monolayers covering their interfaces. To unravel the conditions governing Euler buckling and Brazier kink formation in these cylindrical tubular interfacial crystals, we strain the elongating cylindrical droplets within confining microfluidic wells. Our experiments unveil a nonclassical relation between the Young's modulus and the bending modulus of these crystals. Intriguingly, this relation varies with the radius of the cylindrical crystal, presenting a nonclassical mechanism for tuning of elasticity in nanotechnology applications.
引用
收藏
页码：8717 / 8722
页数：6
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