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Gotas de líquido ferromagnético reconfigurables

Xubo Liu1,2, Noah Kent2,3, Alejandro Ceballos4

  • 1Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.

Science (New York, N.Y.)
|July 20, 2019
PubMed
Resumen
Este resumen es generado por máquina.

Los investigadores desarrollaron gotas líquidas ferromagnéticas reconfigurables mediante el atascamiento de nanopartículas magnéticas. Estas gotas retienen el magnetismo después de la eliminación del campo, lo que permite un control remoto preciso para la materia activa y las construcciones líquidas programables.

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Área de la Ciencia:

  • Ciencias de los materiales
  • Física de la materia blanda
  • Nanotecnología

Sus antecedentes:

  • Los ferromagnetos sólidos son rígidos e inmutables.
  • Los ferrofluidos son reconfigurables pero pierden la magnetización sin un campo magnético.

Objetivo del estudio:

  • Para crear gotas de líquido magnético reconfigurables.
  • Para lograr propiedades ferromagnéticas estables en construcciones líquidas.

Principales métodos:

  • Montaje de una monocapa de nanopartículas magnéticas en la interfaz agua-aceite.
  • Inducir el bloqueo para crear una transición reversible de paramagnético a ferromagnético.

Principales resultados:

  • Se crearon gotas líquidas ferromagnéticas con coercividad y magnetización remanente.
  • Estas gotas mantuvieron las propiedades magnéticas después de la eliminación del campo.
  • Las gotas podían ser reconfiguradas en varias formas.

Conclusiones:

  • Las nuevas gotas de líquido ferromagnético ofrecen reconfigurabilidad y magnetismo estable.
  • Es posible la activación remota precisa del movimiento de las gotas.
  • Las aplicaciones potenciales incluyen materia activa, ensamblajes disipadores de energía y construcciones líquidas programables.