Self-assembled patterns of nanospheres with symmetries from submicrons to centimeters

Kun Chen; Allen Taflove; Young L. Kim; Vadim Backman

doi:10.1063/1.1851002

Self-assembled patterns of nanospheres with symmetries from submicrons to centimeters

Kun Chen, Allen Taflove, Young L. Kim, Vadim Backman^*

^*Corresponding author for this work

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

18 Scopus citations

Abstract

We report pattern formations during the drying of a sheet of an aqueous suspension of nanospheres. The structures self-assembled by nanospheres span several centimeters and exhibit order at scales ranging from nanometers to centimeters, although the substrate has no predefined pattern. Within these structures, several regular patterns can be identified, including two-dimensional periodic gratings generated by crack networks with a characteristic spatial frequency linearly depending on the evaporation speed, and three-dimensional flower-like structures. This phenomenon potentially provides a simple and inexpensive method to grow structures having unique electromagnetic and/or biological properties.

Original language	English (US)
Article number	033101
Pages (from-to)	1-3
Number of pages	3
Journal	Applied Physics Letters
Volume	86
Issue number	3
DOIs	https://doi.org/10.1063/1.1851002
State	Published - Jan 17 2005

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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abstract = "We report pattern formations during the drying of a sheet of an aqueous suspension of nanospheres. The structures self-assembled by nanospheres span several centimeters and exhibit order at scales ranging from nanometers to centimeters, although the substrate has no predefined pattern. Within these structures, several regular patterns can be identified, including two-dimensional periodic gratings generated by crack networks with a characteristic spatial frequency linearly depending on the evaporation speed, and three-dimensional flower-like structures. This phenomenon potentially provides a simple and inexpensive method to grow structures having unique electromagnetic and/or biological properties.",

author = "Kun Chen and Allen Taflove and Kim, {Young L.} and Vadim Backman",

note = "Funding Information: The authors thank Dr. Alexander Golovin for helpful discussions. This work is supported by US NSF Grant No. BES-0238903 and the Institute for Bioengineering and Nanoscience in Advanced Medicine of Northwestern University. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.",

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AB - We report pattern formations during the drying of a sheet of an aqueous suspension of nanospheres. The structures self-assembled by nanospheres span several centimeters and exhibit order at scales ranging from nanometers to centimeters, although the substrate has no predefined pattern. Within these structures, several regular patterns can be identified, including two-dimensional periodic gratings generated by crack networks with a characteristic spatial frequency linearly depending on the evaporation speed, and three-dimensional flower-like structures. This phenomenon potentially provides a simple and inexpensive method to grow structures having unique electromagnetic and/or biological properties.

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Self-assembled patterns of nanospheres with symmetries from submicrons to centimeters

Abstract

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