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Liquid crystal bilayers (3.3nm) |
| Liquid crystal bilayers (3.3nm) |
| AFM scan on Liquid Crystal precursor film |
| Amphiphilic molecules self-organisation (5.5nm) |
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Patterns and Pathways in Colloidal Nanoparticle Assemblies |
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| Collaboration: E. Vaujour & P. Moriarty (School of Physics and Astronomy, University of Nottingham, UK) |
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| |  | | Observation of nanoparticles assemblie in real time | | | | | Determination of patterns and pathways morphology | | |
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| |  | | SiO2 Surf
| | |  | | Your Optical Microscope : upright, reflected light (BF challenging, DIC mode for guaranteed success)
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A drop of colloïdal solution of Gold nanoparticles (diameter 2nm), passivated by thiol molecules C8H17S (total diameter around 3nm) [Brust et al., J. Chem. Soc., Chem. Commun. (1994)]in dichloromethane is deposited on the Surf (pretreatment of the surface by O3). The solvent is evaporated at RT. Faceted aspect on the aggregate in the right side of the image is remarkable but not unusual; the interest is more evident in the pattern succession made by particles from the left side to the right side of the image: low density cellular network, some viscous fingering near the sharp “tip”, then a denser - still cellular-network arranged - nanoparticle film at the tip basis.
(Scale bar : 20µm) |
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