Hierarchical Nanoparticle Ensembles Synthesized by Liquid Phase Directed Self-Assembly.

J. D. FOWLKES; N. A. ROBERTS; Y. WU; J. A. DIEZ; A. G. GONZÁLEZ; C. HARTNETT; K. MAHADY; S. AFKHAMI; L. KONDIC; P. D. RACK

NANO LETTERS (PRINT)

AMER CHEMICAL SOC

Lugar: Washington; Año: 2014 vol. 14 p. 774 - 782

1530-6984

A liquid metal filament supported on a dielectric substrate was directed to fragment into an ordered, mesoscale particle ensemble. Imposing an undulated surface perturbation on the filament forced the development of a single unstable mode from the otherwise disperse, multimodal Rayleigh− Plateau instability. The imposed mode paved the way for a hierarchical spatial fragmentation of the filament into particles, previously seen only at much larger scales. Ultimately, nanoparticle radius control is demonstrated using a micrometer scale switch