Large-Scale Self-Organized Growth of (001) Surface-Oriented Colloidal Crystals by Edge Meniscus Effect

Ting Zhang; Xinlin Tuo; Jun Yuan

doi:10.1021/la8030717

Large-Scale Self-Organized Growth of (001) Surface-Oriented Colloidal Crystals by Edge Meniscus Effect

Ting Zhang, Xinlin Tuo, Jun Yuan

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

Millimeter-sized films of (100) facing face-centered crystals (fcc) of colloidal nanoparticles have been fabricated by self-assembly on silicon substrates and studied by both optical and scanning electron microscopy. The top surface layer sometimes also reconstructs to form a 1 x n (n varies from 2-7) superstructure. Such (100) oriented regions of the colloidal film are apt to concentrate near the edge of the substrate, and changing the width of the substrate could control the areas of the (100)-oriented domains. The formation of the square packing surface pattern is related to the shape of the meniscus at the edges of the substrate, where the particles suffer additional shear force and higher evaporation, which can be used to control the location and size of the square arrangement of nanoparticles.

Original language	English
Pages (from-to)	820-824
Number of pages	5
Journal	Langmuir
Volume	25
Issue number	2
DOIs	https://doi.org/10.1021/la8030717
Publication status	Published - 20 Jan 2009

Keywords

PHOTONIC BAND-STRUCTURE
PATTERNED SURFACE
CAPILLARY FORCES
PARTICLES
FABRICATION
SPHERES
FILMS
NANOPARTICLES
DIFFRACTION
DROPLET

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10.1021/la8030717

http://pubs.acs.org/doi/abs/10.1021/la8030717

Cite this

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abstract = "Millimeter-sized films of (100) facing face-centered crystals (fcc) of colloidal nanoparticles have been fabricated by self-assembly on silicon substrates and studied by both optical and scanning electron microscopy. The top surface layer sometimes also reconstructs to form a 1 x n (n varies from 2-7) superstructure. Such (100) oriented regions of the colloidal film are apt to concentrate near the edge of the substrate, and changing the width of the substrate could control the areas of the (100)-oriented domains. The formation of the square packing surface pattern is related to the shape of the meniscus at the edges of the substrate, where the particles suffer additional shear force and higher evaporation, which can be used to control the location and size of the square arrangement of nanoparticles.",

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AU - Zhang, Ting

AU - Tuo, Xinlin

AU - Yuan, Jun

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N2 - Millimeter-sized films of (100) facing face-centered crystals (fcc) of colloidal nanoparticles have been fabricated by self-assembly on silicon substrates and studied by both optical and scanning electron microscopy. The top surface layer sometimes also reconstructs to form a 1 x n (n varies from 2-7) superstructure. Such (100) oriented regions of the colloidal film are apt to concentrate near the edge of the substrate, and changing the width of the substrate could control the areas of the (100)-oriented domains. The formation of the square packing surface pattern is related to the shape of the meniscus at the edges of the substrate, where the particles suffer additional shear force and higher evaporation, which can be used to control the location and size of the square arrangement of nanoparticles.

AB - Millimeter-sized films of (100) facing face-centered crystals (fcc) of colloidal nanoparticles have been fabricated by self-assembly on silicon substrates and studied by both optical and scanning electron microscopy. The top surface layer sometimes also reconstructs to form a 1 x n (n varies from 2-7) superstructure. Such (100) oriented regions of the colloidal film are apt to concentrate near the edge of the substrate, and changing the width of the substrate could control the areas of the (100)-oriented domains. The formation of the square packing surface pattern is related to the shape of the meniscus at the edges of the substrate, where the particles suffer additional shear force and higher evaporation, which can be used to control the location and size of the square arrangement of nanoparticles.

KW - PHOTONIC BAND-STRUCTURE

KW - PATTERNED SURFACE

KW - CAPILLARY FORCES

KW - PARTICLES

KW - FABRICATION

KW - SPHERES

KW - FILMS

KW - NANOPARTICLES

KW - DIFFRACTION

KW - DROPLET

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JO - Langmuir

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IS - 2

ER -

Large-Scale Self-Organized Growth of (001) Surface-Oriented Colloidal Crystals by Edge Meniscus Effect

Abstract

Keywords

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