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  Spectroscopic Investigation of Opal Formation from Suspensions

Muldarisnur, M., & Marlow, F. (2017). Spectroscopic Investigation of Opal Formation from Suspensions. The Journal of Physical Chemistry C, 121(33), 18274-18279. doi:10.1021/acs.jpcc.7b05590.

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 Creators:
Muldarisnur, Mulda1, 2, Author              
Marlow, Frank1, 3, Author              
Affiliations:
1Research Group Marlow, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445612              
2Department of Physics, Andalas University, Kampus Unand Limau Manis, 25163 Padang, Indonesia, ou_persistent22              
3Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Duisburg, Germany, ou_persistent22              

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 Abstract: We report an in-situ observation of wet opal formation from a dilute colloidal suspension by using time-resolved transmission spectroscopy. The formation involves rather complex partial processes that include particle migration, particle ordering (crystallization) into differently oriented domains, and continuous compaction. The initial particle ordering results in an fcc lattice with an interparticle distance larger than particle diameter. The crystallization is followed by a slow but continuous compaction until the wet opal fills the capillary cell completely. The time behavior of the background of the extinction spectra indicates that there is no disordered dense state preceding the opal growth front. Instead, it seems that the continuous compaction process heals pointlike defects but at the same time induces domain-related defects. Similar formation processes likely occur for other deposition methods like vertical and horizontal deposition methods as well.

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Language(s): eng - English
 Dates: 2017-08-022017-08-24
 Publication Status: Published in print
 Pages: 6
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1021/acs.jpcc.7b05590
 Degree: -

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Title: The Journal of Physical Chemistry C
  Abbreviation : J. Phys. Chem. C
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Chemical Society
Pages: - Volume / Issue: 121 (33) Sequence Number: - Start / End Page: 18274 - 18279 Identifier: ISSN: 1932-7447
CoNE: https://pure.mpg.de/cone/journals/resource/954926947766