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Reconfigurable Assembly of Active Liquid Metal Colloidal Cluster.
Li, Zesheng; Zhang, Hongyue; Wang, Daolin; Gao, Changyong; Sun, Mengmeng; Wu, Zhiguang; He, Qiang.
  • Li Z; Micro/Nanotechnology Research Centre, Harbin Institute of Technology, No. 92 XiDaZhi Street, Harbin, 150001, China.
  • Zhang H; Micro/Nanotechnology Research Centre, Harbin Institute of Technology, No. 92 XiDaZhi Street, Harbin, 150001, China.
  • Wang D; Micro/Nanotechnology Research Centre, Harbin Institute of Technology, No. 92 XiDaZhi Street, Harbin, 150001, China.
  • Gao C; Micro/Nanotechnology Research Centre, Harbin Institute of Technology, No. 92 XiDaZhi Street, Harbin, 150001, China.
  • Sun M; Micro/Nanotechnology Research Centre, Harbin Institute of Technology, No. 92 XiDaZhi Street, Harbin, 150001, China.
  • Wu Z; Micro/Nanotechnology Research Centre, Harbin Institute of Technology, No. 92 XiDaZhi Street, Harbin, 150001, China.
  • He Q; Micro/Nanotechnology Research Centre, Harbin Institute of Technology, No. 92 XiDaZhi Street, Harbin, 150001, China.
Angew Chem Int Ed Engl ; 59(45): 19884-19888, 2020 Nov 02.
Article en En | MEDLINE | ID: mdl-33448587
ABSTRACT
We report the reconfigurable assembly of rod-shaped eutectic gallium-indium alloy (EGaIn) liquid metal colloidal motors by mimicking the growth behavior of a dandelion. EGaIn nanorods with a diameter of 210 nm and a length of 850 nm were synthesized via an ultrasound-assisted physical dispersion method. The nanorods possess a core-shell structure with a 30 nm GaOOH shell and zero-valent liquid core. The EGaIn motors move autonomously at a speed of 41.2 µm s-1 under an acoustic field. By modulating the frequency of the applied acoustic field, the EGaIn colloidal motors self-organize into various striped and circular patterns, followed by a flower-like cluster. The dandelion-like EGaIn colloidal motor clusters move collectively and redisperse when the applied acoustic frequency is changed. Numerical simulations reveal that the flower-like clusters are created by the acoustic propulsion in combination with steric repulsion and hydrodynamics.
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Año: 2020 Tipo del documento: Article
Texto completo
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PubMed Links
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Año: 2020 Tipo del documento: Article