Geometric Stability and Elastic Response of a Supported Nanoparticle Film

Journal Article · Fri Sep 16 00:00:00 EDT 2011 · Phys. Rev. Lett.

DOI:https://doi.org/10.1103/PhysRevLett.105.058301· OSTI ID:1021191

Leahy, Brian D; Pocivavsek, Luka; Meron, Mati; Lam, Kin Lok; Salas, Desiree; Viccaro, P James; Lee, Ka Yee C; Lin, Binhua ^[1]

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1. UC

The mechanical response to compression of a self-assembled gold nanoparticle monolayer and trilayer at the air-liquid interface is examined. Analysis of the film's buckling morphology under compression reveals an anomalously low bending rigidity for both the monolayer and the trilayer, in contrast with continuum elastic plates. We attribute this to the spherical geometry of the nanoparticles and poor coupling between layers, respectively. The elastic energy of the trilayers is first delocalized in wrinkles and then localized into folds, as predicted by linear and nonlinear elastic theory for an inextensible thin film supported on a fluid.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
• Sponsoring Organization: NSFOTHER
• OSTI ID: 1021191
• Journal Information: Phys. Rev. Lett., Vol. 105, Issue (5) ; 07, 2010; ISSN 0031-9007
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BENDING
BUCKLING
COMPRESSION
GEOMETRY
GOLD
MORPHOLOGY
PLATES
STABILITY
THIN FILMS