| Texto completo | |
| Autor(es): |
Santos, O. R.
[1, 2]
;
Braga, W. S.
[1, 2]
;
Luders, D. D.
[1, 3]
;
Sampaio, A. R.
[1]
;
Kimura, N. M.
[1]
;
Simoes, M.
[4]
;
Palangana, A. J.
[1]
Número total de Autores: 7
|
| Afiliação do(s) autor(es): | [1] Univ Estadual Maringa, Dept Fis, Maringa, Parana - Brazil
[2] Univ Tecnol Fed Parana, Campo Mourao - Brazil
[3] Univ Estadual Maringa, Dept Engn Agr, Cidade Gaucha - Brazil
[4] Univ Estadual Londrina, Dept Fis, Londrina, Parana - Brazil
Número total de Afiliações: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHASE TRANSITIONS; v. 94, n. 6-8, p. 546-555, AUG 3 2021. |
| Citações Web of Science: | 1 |
| Resumo | |
The biaxial nematic (N-B) phase bordered by two uniaxial nematic (discotic - N-D and calamitic - N-C) phases and the one between N-D phases are studied in potassium laurate (K-L), decanol (DeOH) and D2O mixture using conoscopic images. The sequences of phases (N-D -> N-B(+) -> N-B(-) -> N-C and N-D -> N-B(+) -> N-D) were optically characterized, where N-B(+) and N-B(-) are the biaxial positive and biaxial negative nematic phases, respectively. A new sequence of phases (N-D -> N-B(+) -> N-B(-) -> NB+ -> N-D) found in one line of the phase diagram positioned close to the interface with the NC phase was also optically confirmed through conoscopic images. The N-B(+) (N-B(-)) -> N-B(-) (N-B(+)) transition point was determined by means of image processing. In this review work, we emphasize the relevance of the optical characterization of an NB- phase inherent to the nature of this lyotropic material. (AU) | |
| Processo FAPESP: | 14/50983-3 - INCT 2014: fluidos complexos |
| Beneficiário: | Antonio Martins Figueiredo Neto |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |