Site-specific functionalization on individual colloids: Size control, stability, and multilayers

Allison M. Yake, Charles E. Snyder, Darrell Velegol

Research output: Contribution to journalArticle

62 Citations (Scopus)

Abstract

Individual colloidal particles are locally functionalized with nanoscale control. Here we use the particle lithography technique to mask one region of a silica or polystyrene particle (size 3.0 μm down to 170 nm), while the remaining 95% or more of the particle is coated with various sized nanocolloids. The images and data show precise and predictable control over the size of the region, with fine-tuned patch size control obtainable by changing the ionic strength of the solution. The coating on the particles remains stable even when subjected to sonication for 5 min. Both single regions and multilayer annuluses are readily formed. Particle lithography provides a general, reliable, stable, controllable, and scalable method for placing site-specific functionalizations on individual particles, opening the way to more complex particle patterning and the bottom-up assembly of more complex structures.

Original languageEnglish (US)
Pages (from-to)9069-9075
Number of pages7
JournalLangmuir
Volume23
Issue number17
DOIs
StatePublished - Aug 14 2007

Fingerprint

control stability
Colloids
colloids
Multilayers
Lithography
Sonication
Polystyrenes
Ionic strength
Silicon Dioxide
Masks
Particle size
Silica
Coatings
lithography
polystyrene
masks
assembly
silicon dioxide
coatings

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

Cite this

Yake, Allison M. ; Snyder, Charles E. ; Velegol, Darrell. / Site-specific functionalization on individual colloids : Size control, stability, and multilayers. In: Langmuir. 2007 ; Vol. 23, No. 17. pp. 9069-9075.
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Site-specific functionalization on individual colloids : Size control, stability, and multilayers. / Yake, Allison M.; Snyder, Charles E.; Velegol, Darrell.

In: Langmuir, Vol. 23, No. 17, 14.08.2007, p. 9069-9075.

Research output: Contribution to journalArticle

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