Journal ArticleDOI
Self-Assembly of Single-Sized and Binary Colloidal Particles at Air/Water Interface by Surface Confinement and Water Discharge
Valeria Lotito,Tomaso Zambelli +1 more
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TLDR
The designed approach offers remarkable advantages in terms of cost and robustness compared to state-of-the art methods and is suitable for the fabrication of highly ordered monolayers even for more challenging assembly experiments such as transfer on rough substrates or assembly of binary colloids.Abstract:
We present an innovative apparatus allowing self-assembly at air/water interface in a smooth and reproducible way. The combination of water discharge and surface confinement of the area over which self-assembly takes place allows transfer of the assembled monolayer without any risk of damage to the colloidal crystal. As we demonstrate, the designed approach offers remarkable advantages in terms of cost and robustness compared to state-of-the art methods and is suitable for the fabrication of highly ordered monolayers even for more challenging assembly experiments such as transfer on rough substrates or assembly of binary colloids. Hence, our apparatus represents a significant headway toward high scale production of large area colloidal crystals. For the binary colloid assembly experiments, we also report the first experimental demonstration of a morphology based on the alternation of three and four small particles in the interstices between large particles.read more
Citations
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Journal ArticleDOI
Approaches to self-assembly of colloidal monolayers: A guide for nanotechnologists.
Valeria Lotito,Tomaso Zambelli +1 more
TL;DR: This review presents an extensive classification and comparison of the different techniques adopted for 2D self-assembly in order to provide useful guidelines for scientists approaching this field.
Journal ArticleDOI
Surface self-assembly of colloidal crystals for micro- and nano-patterning.
TL;DR: An overview of available self-assembly methods for the creation of colloidal crystals, organized by the type of forces governing the self- assembly process: fluidic, physical, external fields, and chemical is presented.
Journal ArticleDOI
Self-Assembly of Colloidal Spheres toward Fabrication of Hierarchical and Periodic Nanostructures for Technological Applications
TL;DR: In this paper, a review of the current challenges and future opportunities of colloidal self-assembly is presented, in which these structures exhibit unique properties for different technological applications in plasmonics, surface-enhanced Raman scattering, solar cells, and others.
Journal ArticleDOI
Tunable 2D Binary Colloidal Alloys for Soft Nanotemplating
Miguel Angel Fernandez-Rodriguez,Roey Elnathan,Ran Ditcovski,Fabio Grillo,Gaurasundar M. Conley,Flavia Timpu,Astrid Rauh,Karen Geisel,Tal Ellenbogen,Rachel Grange,Frank Scheffold,Matthias Karg,Walter Richtering,Nicolas H. Voelcker,Nicolas H. Voelcker,Nicolas H. Voelcker,Lucio Isa +16 more
TL;DR: It is shown that microgel particles can for instance be transferred to silicon substrates, where they act as masks for the metal-assisted chemical etching of binary arrays of vertically aligned silicon nanowires (VA-SiNWs) with fine geometrical control.
Journal ArticleDOI
Deposition of Gold Nanotriangles in Large Scale Close-Packed Monolayers for X-ray-Based Temperature Calibration and SERS Monitoring of Plasmon-Driven Catalytic Reactions
Ferenc Liebig,Radwan M. Sarhan,Mathias Sander,Wouter Koopman,Roman Schuetz,Matias Bargheer,Joachim Koetz +6 more
TL;DR: This work presents a direct method for the large scale close-packed monolayer formation of edge-to-edge ordered, ultrathin crystalline gold nanotriangles on Si wafers or quartz glass via the transfer of these asymmetric particles to the air-liquid interface after adding ethanol-toluene mixtures without any subsequent surface functionalization.
References
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Continuous Convective Assembling of Fine Particles into Two-Dimensional Arrays on Solid Surfaces
TL;DR: In this article, a method to control the growth of particle arrays on smooth and wettable solid surfaces is presented. But the results show that the higher the particle monodispersity, the lower the particle volume fraction, and the higher environmental humidity, the larger the size of the forming domains.
Journal ArticleDOI
Field-Induced Layering of Colloidal Crystals
TL;DR: The ability to modulate this “lateral attraction” between particles, by adjusting field strength or frequency, facilitates the reversible formation of two-dimensional fluid and crystalline colloidal states on the electrode surface.
Journal ArticleDOI
Controlled, Rapid Deposition of Structured Coatings from Micro- and Nanoparticle Suspensions
Brian G. Prevo,Orlin D. Velev +1 more
TL;DR: The objective of the study was to develop the operational basis for rapid and controlled deposition of crystal coatings from particles of a wide size range by dragging with constant velocity a small volume of liquid confined in a meniscus between two plates.
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Approaches to self-assembly of colloidal monolayers: A guide for nanotechnologists.
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