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Ion-association complexes unite classical and non-classical theories for the biomimetic nucleation of calcium phosphate.
A combination of in situ investigations are presented, which show that for the crystallization of calcium phosphate these nanometre-sized units are in fact calcium triphosphate complexes and demonstrate how the existence of these complexes lowers the energy barrier to nucleation and unites classical and non-classical nucleation theories.
Continuum percolation of polydisperse nanofillers.
A generalized connectedness percolation theory can be made tractable for a large class of anisotropic particle mixtures that potentially contain an infinite number of components and allows the influence of the presence of nonconductive species in the mixture to be modeled.
Design and self-assembly of simple coat proteins for artificial viruses.
A rational design for a self-assembling minimal viral coat protein based on simple polypeptide domains is reported, which features precise control over the cooperativity of its self-assembly with single DNA molecules to finally form rod-shaped virus-like particles.
Continuum percolation of carbon nanotubes in polymeric and colloidal media
- A. V. Kyrylyuk, P. van der Schoot
- PhysicsProceedings of the National Academy of Sciences
- 17 June 2008
It is argued that the host matrix in which the nanotubes are dispersed controls this threshold through the interactions it induces between them during processing and through the degree of connectedness that must be set by the tunneling distance of electrons, at least in the context of conductivity percolation.
Shape and director-field transformation of tactoids.
It is found that the more elongated the tactoid, the more strongly it resists the crossing over from a homogeneous to a bipolar structure, which should have implications for the nucleation rate of the nematic phase.
Size regulation of ss-RNA viruses.
The physical mechanisms underlying the size selection among spherical viruses are investigated, and it is found that the coat proteins could well adjust the size of the shell to thesize of their genome, which in turn depends on the number of charges on it.
Probing the Solvent-Assisted Nucleation Pathway in Chemical Self-Assembly
- P. Jonkheijm, P. van der Schoot, A. Schenning, E. Meijer
- Materials Science, ChemistryScience
- 7 July 2006
The spectroscopically monitored a nucleation process in the self-assembly of p-conjugated molecules into helical supramolecular fibrillar structures, suggesting that an organized shell of solvent molecules plays an explicit role in rigidifying the aggregates and guiding them toward further assembly into bundles and/or gels.
How to distinguish isodesmic from cooperative supramolecular polymerisation.
- Maarten M. J. Smulders, Marko M. L. Nieuwenhuizen, T. D. de Greef, P. van der Schoot, A. Schenning, E. Meijer
- Materials ScienceChemistry
- 4 January 2010
It was found that for a rapid and unambiguous determination of the self-assembly mechanism and its thermodynamic parameters, temperature-dependent measurements are more appropriate.
Connectivity percolation of polydisperse anisotropic nanofillers.
It is shown that for a given average length, a length distribution that is strongly skewed to shorter lengths produces the lowest threshold relative to the equivalent monodisperse one, and if the lengths and diameters of the particles are linearly correlated, polydispersity raises the percolation threshold and more so for a more skewed distribution toward smaller lengths.
Nematic droplets in aqueous dispersions of carbon nanotubes.
- N. Puech, E. Grelet, P. Poulin, C. Blanc, P. van der Schoot
- PhysicsPhysical review. E, Statistical, nonlinear, and…
- 24 August 2010
From the scatter in the data, it is deduced that the surface tension of the coexisting isotropic and nematic phases must be extremely low, that is, of the order of nN/m.