Can self-assembly of a magnetic nanoparticles happen without any solvent evaporation method or external magnetic influence?
Novuhulu Rhakho
A gaseous dispersed system of magnetic nanoparticles is by nature thermodynamically unstable (aggregates) and kinetically unstable (settles). Liquid dispersed systems of magnetic nanoparticles have the same property.
Novuhulu Rhakho Yes, self-assembly of magnetic nanoparticles is possible without the need of solvent evaporation processes or external magnetic effects. Nanoparticle self-assembly in magnetic nanoparticles involves interparticle interactions, surface chemistry, nanoparticle nature, Van der Waals forces, hydrogen bonding, surface modifications, and capillary forces.
Yes. You can use a reactive solvent (e.g., a thermosetting resin or a photopolymer) to fix the shape of your self-assembled particles. As mentioned by Alvena Shahid , self-assembly is guided by several forces, including the magnetic force if the particles have a permanent magnetic moment. You must also balance the system stability to avoid large-scale aggregation, as pointed out by Yuri Mirgorod .
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