jp8b08981_si_001.pdf (1.14 MB)
Electrostatic Directed Assembly of Colloidal Microparticles Assisted by Convective Flow
journal contribution
posted on 2018-11-30, 00:00 authored by Lauryanne Teulon, Yannick Hallez, Simon Raffy, François Guerin, Etienne Palleau, Laurence RessierElectrostatic directed
assembly of colloidal particles on charged
patterns, that is, nanoxerography, has proven to find innovative applications
in plasmonics, anticounterfeiting, or particle sorting. However, this
technique was restricted to dispersions of nanoparticles whose diameters
are typically below 100 nm. The combination of experiments and simulations
shows that this limitation is due to an uncontrolled dewetting of
the substrate and to the low mobility of large particles. The “convective
nanoxerography” process developed in this work overcomes this
limit and allows making selective and dense assemblies of micrometer-sized
particles expanding by a factor 40 the size range foreseeable.