Competing liquidphase instabilities during pulsed laser induced self assembly of copper rings into ordered nanoparticle arrays onSiO2

Document Type

Article

Journal/Book Title/Conference

Langmuir

Volume

27

Issue

21

Publication Date

2011

Abstract

Nanoscale copper rings of different radii, thicknesses, and widths were synthesized on silicon dioxide thin films and were subsequently liquefied via a nanosecond pulse laser treatment. During the nanoscale liquid lifetimes, the rings experience competing retraction dynamics and thin film and/or Rayleigh–Plateau types of instabilities, which lead to arrays of ordered nanodroplets. Surprisingly, the results are significantly different from those of similar experiments carried out on a Si surface. (1) We use hydrodynamic simulations to elucidate how the different liquid/solid interactions control the different instability mechanisms in the present problem.

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