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

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