Bottom-up field-directed self-assembly of magnetic nanoparticles into ordered nano- and macrostructures
Preger, Calle LU
; Josefsson, Martin
LU
; Westerström, Rasmus
LU
and Messing, Maria E.
LU
(2021)
In Nanotechnology
32(19).
- Abstract
Directed self-assembly of nanoparticles (NPs) is a promising strategy for bottom-up fabrication of nanostructured materials with tailored composition and morphology. Here, we present a simple and highly flexible method where charged magnetic aerosolized (i.e. suspended in a gas) NPs with tunable size and composition are self-assembled into nanostructures using combined electric and magnetic fields. Size-selected Co, Ni, and Fe NPs have been generated by spark ablation, and self-assembled into different structures, ranging from one-dimensional nanochains to macroscopic three-dimensional networks. By comparing the resulting structures with simulations, we can conclude that the magnetization of the NPs governs the self-assembly through... (More)
Directed self-assembly of nanoparticles (NPs) is a promising strategy for bottom-up fabrication of nanostructured materials with tailored composition and morphology. Here, we present a simple and highly flexible method where charged magnetic aerosolized (i.e. suspended in a gas) NPs with tunable size and composition are self-assembled into nanostructures using combined electric and magnetic fields. Size-selected Co, Ni, and Fe NPs have been generated by spark ablation, and self-assembled into different structures, ranging from one-dimensional nanochains to macroscopic three-dimensional networks. By comparing the resulting structures with simulations, we can conclude that the magnetization of the NPs governs the self-assembly through interparticle magnetic dipole−dipole interactions. We also show how the orientation of the external magnetic field directs the self-assembly into differently aligned nano- and macroscopic structures. These results demonstrate how aerosol deposition in a combined electric and magnetic field can be used for directed bottom-up self-assembly of nanostructures with specialized composition and morphology.
(Less)
- author
- Preger, Calle
LU
; Josefsson, Martin
LU
; Westerström, Rasmus
LU
and Messing, Maria E.
LU
- organization
- publishing date
- 2021
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Aerosol, Directed self-assembly, Electrostatic precipitator, Magnetic nanoparticles
- in
- Nanotechnology
- volume
- 32
- issue
- 19
- article number
- 195603
- publisher
- IOP Publishing
- external identifiers
-
- pmid:33530061
- scopus:85102658232
- ISSN
- 0957-4484
- DOI
- 10.1088/1361-6528/abe263
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © 2021 The Author(s). Published by IOP Publishing Ltd Printed in the UK Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
- id
- 38af05e6-4eca-4a2b-a344-0f4158f2f0f9
- date added to LUP
- 2021-03-24 07:44:57
- date last changed
- 2024-06-13 09:19:06
@article{38af05e6-4eca-4a2b-a344-0f4158f2f0f9,
abstract = {{<p>Directed self-assembly of nanoparticles (NPs) is a promising strategy for bottom-up fabrication of nanostructured materials with tailored composition and morphology. Here, we present a simple and highly flexible method where charged magnetic aerosolized (i.e. suspended in a gas) NPs with tunable size and composition are self-assembled into nanostructures using combined electric and magnetic fields. Size-selected Co, Ni, and Fe NPs have been generated by spark ablation, and self-assembled into different structures, ranging from one-dimensional nanochains to macroscopic three-dimensional networks. By comparing the resulting structures with simulations, we can conclude that the magnetization of the NPs governs the self-assembly through interparticle magnetic dipole−dipole interactions. We also show how the orientation of the external magnetic field directs the self-assembly into differently aligned nano- and macroscopic structures. These results demonstrate how aerosol deposition in a combined electric and magnetic field can be used for directed bottom-up self-assembly of nanostructures with specialized composition and morphology.</p>}},
author = {{Preger, Calle and Josefsson, Martin and Westerström, Rasmus and Messing, Maria E.}},
issn = {{0957-4484}},
keywords = {{Aerosol; Directed self-assembly; Electrostatic precipitator; Magnetic nanoparticles}},
language = {{eng}},
number = {{19}},
publisher = {{IOP Publishing}},
series = {{Nanotechnology}},
title = {{Bottom-up field-directed self-assembly of magnetic nanoparticles into ordered nano- and macrostructures}},
url = {{http://dx.doi.org/10.1088/1361-6528/abe263}},
doi = {{10.1088/1361-6528/abe263}},
volume = {{32}},
year = {{2021}},
}