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Colloidal Crystal Thin Films Grown into Corrugated Surface Templates

Langmuir 26, 4559–4562 (2010)

DOI: doi.org/10.1021/la904396m

Link to the article

Colloidal Crystal Thin Films Grown into Corrugated Surface Templates

F. Ramiro-Manzano, E. Bonet, I. Rodriguez, and F. Meseguer

Abstract

The influence of patterned surfaces on the formation of one- and two-dimensional colloidal crystals is analyzed. We have used the corrugated surface of a digital versatile disc (DVD) for template surface processing. When the sphere diameter is on the order of the groove width of patterned substrates, a rich variety of particle decorations appear. However, if particle size is much larger than template patterns, large domains of particle ordering are formed.

Figures

DVD-R SEM image and AFM image. Microscopy.

Fig 1. (a)SEMimageofaDVD-typetemplateemployedinthe experiments. (b) AFM image of the DVD corrugated surface and the corresponding profile parameters: h = 105 nm, b = 500 nm, d = 240 nm.

Colloids, particles ordered in lineas, DVD template

Fig. 2. SEM images: (a) a parallel collection of particles rows (“LATRIX”), (b) a row of spheres arranged linearly, and (c) a strip composed of two rows. In all cases, the particle size is 770 nm and placed over the flat substrate.

Different colloidal patterns, zig-zag on DVD templates

Fig 3.. SEMimages(bottomrow)of different particle orderings,the cell thickness increasing from the left to the right side of the panel.Side (second row) and top (third row) views of the ordering model showing the sphere distribution in the grooves. The first row shows how the zigzag angle of particle strips changes from 180 (a) to 60 (e). (f) A triangular arrangement of close-packed spheres. The particle size is 380 nm.

Evolution of different colloidal orderings and layers, DVD templates

Fig. 4. SEM images (bottom row) of different particle order- ings, as the cell thickness increases

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Fernando Ramiro Manzano, PhD

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