Following in Real Time the Two-Step Assembly of Nanoparticles into Mesocrystals in Levitating Drops
(2016) In Nano Letters 16(11). p.6838-6843- Abstract
Mesocrystals composed of crystallographically aligned nanocrystals are present in biominerals and assembled materials which show strongly directional properties of importance for mechanical protection and functional devices. Mesocrystals are commonly formed by complex biomineralization processes and can also be generated by assembly of anisotropic nanocrystals. Here, we follow the evaporation-induced assembly of maghemite nanocubes into mesocrystals in real time in levitating drops. Analysis of time-resolved small-angle X-ray scattering data and ex situ scanning electron microscopy together with interparticle potential calculations show that the substrate-free, particle-mediated crystallization process proceeds in two stages involving... (More)
Mesocrystals composed of crystallographically aligned nanocrystals are present in biominerals and assembled materials which show strongly directional properties of importance for mechanical protection and functional devices. Mesocrystals are commonly formed by complex biomineralization processes and can also be generated by assembly of anisotropic nanocrystals. Here, we follow the evaporation-induced assembly of maghemite nanocubes into mesocrystals in real time in levitating drops. Analysis of time-resolved small-angle X-ray scattering data and ex situ scanning electron microscopy together with interparticle potential calculations show that the substrate-free, particle-mediated crystallization process proceeds in two stages involving the formation and rapid transformation of a dense, structurally disordered phase into ordered mesocrystals. Controlling and tailoring the particle-mediated formation of mesocrystals could be utilized to assemble designed nanoparticles into new materials with unique functions.
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- author
- Agthe, Michael
; Plivelic, Tomás S.
LU
; Labrador, Ana
LU
; Bergström, Lennart and Salazar-Alvarez, German
- organization
- publishing date
- 2016-11-09
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- acoustic levitation, anisotropic nanoparticles, Mesocrystal, SAXS, two-step crystallization
- in
- Nano Letters
- volume
- 16
- issue
- 11
- pages
- 6 pages
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- pmid:27779885
- wos:000387625000019
- scopus:84994715752
- ISSN
- 1530-6984
- DOI
- 10.1021/acs.nanolett.6b02586
- language
- English
- LU publication?
- yes
- id
- dc62c455-cbda-4456-928e-b53b31033956
- date added to LUP
- 2016-11-28 14:59:04
- date last changed
- 2025-01-25 18:02:25
@article{dc62c455-cbda-4456-928e-b53b31033956, abstract = {{<p>Mesocrystals composed of crystallographically aligned nanocrystals are present in biominerals and assembled materials which show strongly directional properties of importance for mechanical protection and functional devices. Mesocrystals are commonly formed by complex biomineralization processes and can also be generated by assembly of anisotropic nanocrystals. Here, we follow the evaporation-induced assembly of maghemite nanocubes into mesocrystals in real time in levitating drops. Analysis of time-resolved small-angle X-ray scattering data and ex situ scanning electron microscopy together with interparticle potential calculations show that the substrate-free, particle-mediated crystallization process proceeds in two stages involving the formation and rapid transformation of a dense, structurally disordered phase into ordered mesocrystals. Controlling and tailoring the particle-mediated formation of mesocrystals could be utilized to assemble designed nanoparticles into new materials with unique functions.</p>}}, author = {{Agthe, Michael and Plivelic, Tomás S. and Labrador, Ana and Bergström, Lennart and Salazar-Alvarez, German}}, issn = {{1530-6984}}, keywords = {{acoustic levitation; anisotropic nanoparticles; Mesocrystal; SAXS; two-step crystallization}}, language = {{eng}}, month = {{11}}, number = {{11}}, pages = {{6838--6843}}, publisher = {{The American Chemical Society (ACS)}}, series = {{Nano Letters}}, title = {{Following in Real Time the Two-Step Assembly of Nanoparticles into Mesocrystals in Levitating Drops}}, url = {{http://dx.doi.org/10.1021/acs.nanolett.6b02586}}, doi = {{10.1021/acs.nanolett.6b02586}}, volume = {{16}}, year = {{2016}}, }