Producing and patterning of nanocrystals using "atto-incubators" composed of the core-shell particles

Keiji Fujimoto, Izumi Katsuta, Tomoko Adachi

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We developed a small incubator of an atto-liter scale (atto-incubator) for producing and arraying nanosized materials. The core-shell particles with a hydrogel shell were used as an incubator to isolate individual droplets of the solution and to specify the nucleation sites for crystallizing NaCl and urea solutes. Their array was deposited on a polystyrene dish by the spin-coating of a particulate dispersion, and then dried to remove any residual solvent. When the array was exposed to a solution, the hydrogel shell absorbed the solution and swelled. Nucleation of the nanocrystals at the particles occurred as the arrays were dried again. We obtained single crystals as a rectangular solid with a uniform shape at 8 wt.% NaCl. By the use of atto-incubators for urea crystallization, we obtained nanosized fibers of a single crystal, which were aligned in the direction of the flow. The atto-incubator could allow us to control the nucleation region and the size and shape of the crystals.

Original languageEnglish
Pages (from-to)118-124
Number of pages7
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume290
Issue number1-3
DOIs
Publication statusPublished - 2006 Nov 15

Fingerprint

Nanocrystals
nanocrystals
Nucleation
Hydrogel
nucleation
ureas
Hydrogels
Urea
Single crystals
parabolic reflectors
Polystyrenes
single crystals
Spin coating
Crystallization
particulates
Particles (particulate matter)
coating
polystyrene
solutes
crystallization

Keywords

  • Atto-incubator
  • Core-shell particle
  • Crystallization
  • Nanocrystal
  • Nucleation

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry

Cite this

Producing and patterning of nanocrystals using "atto-incubators" composed of the core-shell particles. / Fujimoto, Keiji; Katsuta, Izumi; Adachi, Tomoko.

In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 290, No. 1-3, 15.11.2006, p. 118-124.

Research output: Contribution to journalArticle

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