Jump to main content
Jump to site search

Issue 69, 2014
Previous Article Next Article

A microfluidic process for on-chip formation of assemblies of oxide nanoparticles

Author affiliations

Abstract

We report the continuous growth of spherical assemblies of silica and titania nanoparticles, which were pre-activated to produce hydroxyl/peroxy groups on their surface, by flowing a colloid-in-dioctyl phthalate emulsion into a polydimethylsiloxane microfluidic chip, which is held at a temperature of 120–130 °C. When the colloidal microdroplets enter the chip, the instantaneous heating results in vapour-based convective agitation and emulsion breakup, leading to microdroplet fusion and subsequent merging of their nanoparticle content. This progressively results in a robust large assembly obtained after sintering at 600 °C owing to strong chemical interparticle bonds.

Graphical abstract: A microfluidic process for on-chip formation of assemblies of oxide nanoparticles

Back to tab navigation

Supplementary files

Publication details

The article was received on 24 Jun 2014, accepted on 30 Jul 2014 and first published on 30 Jul 2014


Article type: Communication
DOI: 10.1039/C4RA06188H
Author version
available:
Download author version (PDF)
Citation: RSC Adv., 2014,4, 36725-36728
  •   Request permissions

    A microfluidic process for on-chip formation of assemblies of oxide nanoparticles

    V. K. Parashar, J. B. Wacker, D. Necula and M. A. M. Gijs, RSC Adv., 2014, 4, 36725
    DOI: 10.1039/C4RA06188H

Search articles by author

Spotlight

Advertisements