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Materiales de accionamiento. materiales de accionamiento. Los elastómeros de cristales líquidos voxelados son

Taylor H Ware1, Michael E McConney2, Jeong Jae Wie1

  • 1Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH, USA. Azimuth Corporation, Dayton, OH, USA.

Science (New York, N.Y.)
|February 28, 2015
PubMed
Resumen
Este resumen es generado por máquina.

Los investigadores desarrollaron elastómeros de cristales líquidos programables con orden molecular controlado localmente. Esto permite que los materiales blandos cambien de forma a demanda, lo que permite nuevos dispositivos multifuncionales.

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Área de la Ciencia:

  • Ciencia de los materiales Ciencia de los materiales.
  • Robótica blanda y robótica suave.
  • Química de Polímeros La Química de Polímeros es la química de los polímeros.

Sus antecedentes:

  • El cambio de forma programable en materiales blandos es crucial para la funcionalidad avanzada del dispositivo.
  • El control localizado sobre la magnitud y la direccionalidad de la respuesta mecánica es un desafío clave.
  • Los elastómeros de cristal líquido (LCE) ofrecen potencial para propiedades mecánicas sintonizables.

Objetivo del estudio:

  • Desarrollar materiales suaves y ordenados con respuestas mecánicas locales controladas con precisión.
  • Para demostrar la fabricación de objetos 3D a partir de hojas planas utilizando el orden molecular con patrones.
  • Explorar el potencial de estos materiales para la creación de dispositivos multifuncionales.

Principales métodos:

  • Preparación de elastómeros de cristales líquidos con un director con patrón espacial (orden molecular).
  • Escribir al director dentro de los elementos de volumen locales (voxels) tan pequeños como 0.0005 mm3.
  • Utilizando estímulos térmicos o químicos para inducir un cambio de forma (doblamiento y estiramiento).

Principales resultados:

  • Logró un control localizado sobre el director, dictando la respuesta mecánica del material (hasta el 55% de deformación).
  • Demostró la transformación de hojas LCE planas en objetos 3D a través de flexión y estiramiento controlados.
  • Director de diseño con éxito en voxeles pequeños para una programación precisa de la forma.

Conclusiones:

  • Los LCE con cambio de forma programable con control de director localizado son alcanzables.
  • Estos materiales permiten la creación de dispositivos monolíticos y multifuncionales a través de la deformación controlada.
  • Las aplicaciones potenciales incluyen sustratos reconfigurables para electrónica flexible en aeroespacial, medicina y bienes de consumo.