The Buckling Spectra of Nanoparticle Surfactant Assemblies.
Nano Lett
; 21(17): 7116-7122, 2021 09 08.
Article
in En
| MEDLINE
| ID: mdl-34448588
Fine control over the mechanical properties of thin sheets underpins transcytosis, cell shape, and morphogenesis. Applying these principles to artificial, liquid-based systems has led to reconfigurable materials for soft robotics, actuation, and chemical synthesis. However, progress is limited by a lack of synthetic two-dimensional membranes that exhibit tunable mechanical properties over a comparable range to that seen in nature. Here, we show that the bending modulus, B, of thin assemblies of nanoparticle surfactants (NPSs) at the oil-water interface can be varied continuously from sub-kBT to 106kBT, by varying the ligands and particles that comprise the NPS. We find extensive departure from continuum behavior, including enormous mechanical anisotropy and a power law relation between B and the buckling spectrum width. Our findings provide a platform for shape-changing liquid devices and motivate new theories for the description of thin-film wrinkling.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Surface-Active Agents
/
Nanoparticles
Language:
En
Journal:
Nano Lett
Year:
2021
Document type:
Article
Affiliation country:
Estados Unidos
Country of publication:
Estados Unidos