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Universalidad y escalado en el desordenamiento de un cristal líquido smectic
T Bellini1, L Radzihovsky, J Toner
1Department of Physics, University of Colorado, Boulder, CO 80309, USA.
Science (New York, N.Y.)
|November 3, 2001
Resumen
El desorden apagado destruye el orden de los cristales en los cristales líquidos, lo que lleva a correlaciones de corto alcance y dinámicas vidriosas. Este estudio revela escalado universal y elasticidad anómala en cristales líquidos esméticos desordenados.
Área de la Ciencia:
- Física de la materia condensada Física de la materia condensada Física de la materia condensada Física de la materia condensada Física de la materia condensada
- Ciencia de los materiales ciencia de los materiales.
- Física de la materia blanda Física de la materia blanda
Sus antecedentes:
- Los cristales líquidos sméticos exhiben un ordenamiento cristalino unidimensional frágil.
- El desorden tiene un profundo impacto en las estructuras periódicas, especialmente en las que se deforman fácilmente.
- El confinamiento de aerogel de sílice introduce el desorden apagado.
Objetivo del estudio:
- Investigar los efectos del desorden apagado en el ordenamiento unidimensional del cristal en tres dimensiones.
- Para caracterizar el comportamiento de los cristales líquidos esméticos confinados en un aerogel de sílice.
- Comprender la interacción entre el desorden, la estructura y la dinámica en estos sistemas.
Principales métodos:
- Estudios experimentales de cristales líquidos confinados en aerogel de sílice.
- Modelado teórico de los efectos de desorden apagado. efectos de desorden apagado.
- Análisis combinado de datos experimentales y teóricos.
Principales resultados:
- El ordenamiento de los cristales se pierde debido al desorden apagado.
- Surgen correlaciones extendidas de corto alcance con la estructura universal y el escalamiento.
- Se observa una elasticidad de capa anómala y una dinámica vítrea.
Conclusiones:
- El desorden apagado altera fundamentalmente el orden de los cristales líquidos.
- El sistema exhibe comportamientos universales a pesar de la pérdida de orden de largo alcance.
- Los hallazgos proporcionan una imagen coherente de los sistemas desordenados de materia blanda.
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