RT Journal Article
T1 Structure and formation kinetics of millimeter‐size single domain supercrystals
A1 García Lojo, Daniel
A1 Modin, Evgeny
A1 Gómez Graña, Sergio
A1 Impéror-Clerc, Marianne
A1 Chuvilin, Andrey
A1 Pastoriza Santos, Isabel
A1 Pérez Juste, Jorge
A1 Constantin, Doru
A1 Hamon, Cyrille
K1 2307 Química Física
AB Organizing nanoparticles (NPs) into periodic structures is a central goal in materials science. Despite progress in the last decades, it is still challenging to produce macroscopic assemblies reliably. In this work, the analysis of the pervaporation‐induced organization of gold octahedra into supercrystals within microfluidic channels using a combination of X‐ray scattering techniques and FIB‐SEM tomography is reported. The results reveal the formation of a single‐domain supercrystal with a monoclinic C2/m symmetry and long‐range order extending over the dimensions of the microfluidic channel, covering at least 1.7 × 0.3 mm 2 . Time‐resolved small angle X‐ray scattering analysis shows that the formation of the superlattice involves an accumulation of the NPs within the channel before the nucleation and growth of the supercrystal. The orientation of the crystal remains unchanged during its formation, suggesting a growth mechanism directed by the channel interface. Together, these results show the potential application of the pervaporation strategy to providing spatially determined control over NP crystallization, which can be used for the rational fabrication of nanomaterial architectures.
PB Advanced Functional Materials
SN 1616301X
YR 2021
FD 2021-07-02
LK http://hdl.handle.net/11093/6067
UL http://hdl.handle.net/11093/6067
LA eng
NO Advanced Functional Materials, 31(27): 2101869 (2021)
NO Ministerio de Economía, Industria y Competitividad | Ref. MAT2016-77809-R
DS Investigo
RD 13-ene-2025