Utilize este identificador para referenciar este registo:
http://hdl.handle.net/10362/135414
Título: | Travelling colourful patterns in self-organized cellulose-based liquid crystalline structures |
Autor: | Silva, Pedro E. S. Chagas, Ricardo Fernandes, Susete N. Pieranski, Pawel Selinger, Robin L. B. Godinho, Maria Helena |
Palavras-chave: | Materials Science(all) Mechanics of Materials |
Data: | Dez-2021 |
Citação: | Silva, P. E. S., Chagas, R., Fernandes, S. N., Pieranski, P., Selinger, R. L. B., & Godinho, M. H. (2021). Travelling colourful patterns in self-organized cellulose-based liquid crystalline structures. Communications Materials, 2(1), Article 79. https://doi.org/10.1038/s43246-021-00182-7 |
Resumo: | Cellulose-based systems are useful for many applications. However, the issue of self-organization under non-equilibrium conditions, which is ubiquitous in living matter, has scarcely been addressed in cellulose-based materials. Here, we show that quasi-2D preparations of a lyotropic cellulose-based cholesteric mesophase display travelling colourful patterns, which are generated by a chemical reaction-diffusion mechanism being simultaneous with the evaporation of solvents at the boundaries. These patterns involve spatial and temporal variation in the amplitude and sign of the helix´s pitch. We propose a simple model, based on a reaction-diffusion mechanism, which simulates the observed spatiotemporal colour behaviour. |
Descrição: | Publisher Copyright: © 2021, The Author(s) |
Peer review: | yes |
URI: | http://hdl.handle.net/10362/135414 |
DOI: | https://doi.org/10.1038/s43246-021-00182-7 |
ISSN: | 2662-4443 |
Aparece nas colecções: | FCT: DCM - Artigos em revista internacional com arbitragem científica |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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s43246_021_00182_7.pdf | 6,03 MB | Adobe PDF | Ver/Abrir |
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