Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 8717-8722 |
| Number of pages | 6 |
| Journal | Nano Letters |
| Volume | 24 |
| Issue number | 28 |
| DOIs | |
| State | Published - 17 Jul 2024 |
Bibliographical note
Publisher Copyright:© 2024 American Chemical Society.
Keywords
- elasticity
- emulsion
- interfacial freezing
- self-faceting
- self-shaping
- two-dimensional crystal