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Capillary interaction and self-assembly of tilted magnetic ellipsoidal particles at liquid interfaces (2018)
Journal Article
Newton, B. J., Mohammed, R., Davies, G. B., Botto, L., & Buzza, D. M. A. (2018). Capillary interaction and self-assembly of tilted magnetic ellipsoidal particles at liquid interfaces. ACS Omega, 3(11), 14962-14972. doi:10.1021/acsomega.8b01818

Copyright © 2018 American Chemical Society. Magnetic ellipsoidal particles adsorbed at a liquid interface provide exciting opportunities for creating switchable functional materials, where self-assembly can be switched on and off using an external fi... Read More

Density functional theory for the crystallization of two-dimensional dipolar colloidal alloys (2018)
Journal Article
Somerville, W. R., Stokes, J. L., Adawi, A. M., Horozov, T. S., Archer, A. J., & Buzza, D. M. (2018). Density functional theory for the crystallization of two-dimensional dipolar colloidal alloys. Journal of physics. an Institute of Physics journal. Condensed matter, 30(40), doi:10.1088/1361-648X/aaddc9

Two-dimensional mixtures of dipolar colloidal particles with different dipole moments exhibit extremely rich self-assembly behaviour and are relevant to a wide range of experimental systems, including charged and super-paramagnetic colloids at liquid... Read More

Amphiphile-Induced Anisotropic Colloidal Self-Assembly (2018)
Journal Article
Rey, M., Yu, T., Bley, K., Landfester, K., Buzza, D. M. A., & Vogel, N. (2018). Amphiphile-Induced Anisotropic Colloidal Self-Assembly. Langmuir : the ACS journal of surfaces and colloids, 34(34), 9990-10000. doi:10.1021/acs.langmuir.8b01382

Spherical colloidal particles typically self-assemble into hexagonal lattices when adsorbed at liquid interfaces. More complex assembly structures, including particle chains and phases with square symmetry, were theoretically predicted almost two dec... Read More

Anisotropic Self-Assembly from Isotropic Colloidal Building Blocks (2017)
Journal Article
Rey, M., Law, A. D., Buzza, D. M. A., & Vogel, N. (2017). Anisotropic Self-Assembly from Isotropic Colloidal Building Blocks. Journal of the American Chemical Society, 139(48), (17464-17473). doi:10.1021/jacs.7b08503. ISSN 0002-7863

© 2017 American Chemical Society. Spherical colloidal particles generally self-assemble into hexagonal lattices in two dimensions. However, more complex, non-hexagonal phases have been predicted theoretically for isotropic particles with a soft repul... Read More

Magnetic cylindrical colloids at liquid interfaces exhibit non-volatile switching of their orientation in an external field (2016)
Journal Article
Newton, B. J., & Buzza, D. M. A. (2016). Magnetic cylindrical colloids at liquid interfaces exhibit non-volatile switching of their orientation in an external field. Soft matter, 12(24), (5285-5296). doi:10.1039/c6sm00136j. ISSN 1744-683X

We study the orientation of magnetic cylindrical particles adsorbed at a liquid interface in an external field using analytical theory and high resolution finite element simulations. Cylindrical particles are interesting since they possess multiple l... Read More

ABC triblock copolymer micelles: Spherical versus worm-like micelles depending on the preparation method (2015)
Journal Article
Ghasdian, N., Buzza, D. M. A., Fletcher, P. D. I., & Georgiou, T. K. (2015). ABC triblock copolymer micelles: Spherical versus worm-like micelles depending on the preparation method. Macromolecular rapid communications, 36(6), (528-532). doi:10.1002/marc.201400621. ISSN 1022-1336

Well-defined ABC triblock copolymers based on two hydrophilic blocks, A and C, and a hydrophobic block B are synthesized and their self-assembly behaviour is investigated. Interestingly, at the same solvent concentration, pH, and temperature, differe... Read More

Influence of magnetic field on the orientation of anisotropic magnetic particles at liquid interfaces (2014)
Journal Article
Newton, B. J., Brakke, K. A., & Buzza, D. M. A. (2014). Influence of magnetic field on the orientation of anisotropic magnetic particles at liquid interfaces. Physical chemistry chemical physics : PCCP, 16(47), 26051-26058. doi:10.1039/c4cp04270k

We study theoretically the influence of an external magnetic field on the orientation of an ellipsoidal magnetic particle adsorbed at a liquid interface. Using the finite element program Surface Evolver, we calculate the equilibrium meniscus shape ar... Read More

Water-in-water emulsions based on incompatible polymers and stabilized by triblock copolymers-templated polymersomes (2013)
Journal Article
Buzza, D. M. A., Fletcher, P. D. I., Georgiou, T. K., & Ghasdian, N. (2013). Water-in-water emulsions based on incompatible polymers and stabilized by triblock copolymers-templated polymersomes. Langmuir : the ACS journal of surfaces and colloids, 29(48), 14804-14814. doi:10.1021/la403356j

Aqueous solutions containing a mixture of polyethylene glycol (PEG) and dextran homopolymers form an aqueous two-phase system which can be emulsified to give a water-in-water emulsion. We show how these emulsions can be stabilized using triblock poly... Read More

Self-assembly of two-dimensional colloidal clusters by tuning the hydrophobicity, composition, and packing geometry (2013)
Journal Article
Law, A. D., Auriol, M., Smith, D., Auriol, M., Buzza, D. M. A., & Horozov, T. S. (2013). Self-assembly of two-dimensional colloidal clusters by tuning the hydrophobicity, composition, and packing geometry. Physical review letters, 110(13), (0 - 0). doi:10.1103/physrevlett.110.138301. ISSN 0031-9007

We study the structure of binary monolayers of large (3 m diameter) very hydrophobic (A) and large (3 m diameter) hydrophilic (B) or small (1 m diameter) hydrophilic (C) silica particles at an octanewater interface. By tuning the composition and pack... Read More

Effect of particulate contamination on adhesive ability and repellence in two species of ant (Hymenoptera; Formicidae) (2012)
Journal Article
Anyon, M. J., Kohonen, M. M., Orchard, M. J., Humphries, S., & Buzza, D. M. A. (2012). Effect of particulate contamination on adhesive ability and repellence in two species of ant (Hymenoptera; Formicidae). The journal of experimental biology, 215(4), 605-616. doi:10.1242/jeb.063578

Tarsal adhesive pads are crucial for the ability of insects to traverse their natural environment. Previous studies have demonstrated that for both hairy and smooth adhesive pads, significant reduction in adhesion can occur because of contamination o... Read More

The structure and melting transition of two-dimensional colloidal alloys (2011)
Journal Article
Law, A. D., Horozov, T. S., & Buzza, D. M. A. (2011). The structure and melting transition of two-dimensional colloidal alloys. Soft matter, 7(19), (8923-8931). doi:10.1039/c1sm05446e. ISSN 1744-683X

We study theoretically the structure and melting transition of two-dimensional (2D) binary mixtures of colloidal particles interacting via a dipole-dipole potential. Using a lattice sum method, we find that at zero temperature (T = 0) the system form... Read More

Two-dimensional colloidal alloys (2011)
Journal Article
Law, A. D., Buzza, D. M. A., & Horozov, T. S. (2011). Two-dimensional colloidal alloys. Physical review letters, 106(12), doi:10.1103/physrevlett.106.128302. ISSN 0031-9007

We study the structure of mixed monolayers of large (3μm diameter) and small (1μm diameter) very hydrophobic silica particles at an octane-water interface as a function of the number fraction of small particles ξ. We find that a rich variety of two-d... Read More

Obtaining Effective Pair Potentials in Colloidal Monolayers Using a Thermodynamically Consistent Inversion Scheme (2010)
Journal Article
Law, A. D., & Buzza, D. M. A. (2010). Obtaining Effective Pair Potentials in Colloidal Monolayers Using a Thermodynamically Consistent Inversion Scheme. Langmuir : the ACS journal of surfaces and colloids, 26(10), 7107-7116. doi:10.1021/la9037233

The structure and stability of colloidal monolayers depends crucially on the effective pair interaction potential u(r) between colloidal particles. In this study, we construct a novel method for extracting u(r) from the two-dimensional (2D) radial di... Read More

Determination of interaction potentials of colloidal monolayers from the inversion of pair correlation functions: A two-dimensional predictor-corrector method (2009)
Journal Article
Law, A. D., & Buzza, D. M. A. (2009). Determination of interaction potentials of colloidal monolayers from the inversion of pair correlation functions: A two-dimensional predictor-corrector method. The Journal of chemical physics, 131(9), (094704 - 094704). doi:10.1063/1.3216568. ISSN 0021-9606

The structure and stability of colloidal monolayers depend crucially on the effective pair potential u (r) between colloidal particles. In this paper, we develop a two-dimensional (2D) predictor-corrector method for extracting u (r) from the pair cor... Read More

Micelle Formation in Block Copolymer/Homopolymer Blends: Comparison of Self-Consistent Field Theory with Experiment and Scaling Theory (2009)
Journal Article
McLeish, T. C. B., Martin A Buzza, D., McLeish, T. C. B., Buzza, D. M. A., Greenall, M. J., & Buzza, M. (2009). Micelle Formation in Block Copolymer/Homopolymer Blends: Comparison of Self-Consistent Field Theory with Experiment and Scaling Theory. Macromolecules, 42(15), 5873 - 5880. doi:10.1021/ma9000594

We present a self-consistent Field theory (SCFT) Study of spherical micelle formation in a blend of poly(styrene-butadiene) diblocks and homopolystyrene. The micelle core radii, corona thicknesses, and critical micelle concentrations are calculated a... Read More

Micelle shape transitions in block copolymer/homopolymer blends: comparison of self-consistent field theory with experiment (2009)
Journal Article
Greenall, M. J., Buzza, D. M. A., & McLeish, T. C. B. (2009). Micelle shape transitions in block copolymer/homopolymer blends: comparison of self-consistent field theory with experiment. The Journal of chemical physics, 131(3), doi:10.1063/1.3170938

Diblock copolymers blended with homopolymer may self-assemble into spherical, cylindrical, or lamellar aggregates. Transitions between these structures may be driven by varying the homopolymer diblock molecular weight or composition. Using self-consi... Read More

Are polyelectrolyte dendrimers stimuli responsive? (2007)
Journal Article
Giupponi, G., Buzza, D. M. A., & Adolf, D. B. (2007). Are polyelectrolyte dendrimers stimuli responsive?. Macromolecules, 40(16), 5959-5965. doi:10.1021/ma070609l

Using a molecular dynamics and mean field theory approach which explicitly accounts for free ions, we study the conformation of polyelectrolyte dendrimers for different generation numbers, spacer lengths, charge distributions and ionic strengths. We... Read More

Monte Carlo simulation of random branching in hyperbranched polymers (2007)
Journal Article
Richards, E. L., Buzza, D. M. A., & Davies, G. R. (2007). Monte Carlo simulation of random branching in hyperbranched polymers. Macromolecules, 40(6), 2210-2218. doi:10.1021/ma0700126

We study the branching statistics of hyperbranched polymers formed from a one-pot melt polymerization of AB2 monomers via Monte Carlo simulation. To simulate the reaction ensemble, we use a 3D percolation-type model where each lattice site of a cubic... Read More

Entanglement transition of randomly branched polymers in the hyperbranched class (2006)
Journal Article
Kunamaneni, S., Buzza, D. M. A., Read, D. J., Parker, D., Kenwright, A. M., Feast, W. J., & Larsen, A. L. (2006). Entanglement transition of randomly branched polymers in the hyperbranched class. Macromolecules, 39(19), 6720-6736. doi:10.1021/ma0603276

We study the melt rheology of randomly branched polymers in the hyperbranched polymer (HBP) class which are formed by the co-condensation of AB and AB2 type monomers. Specifically, we study the effect of branch length Mx on the entanglement transitio... Read More

A Monte Carlo study of amphiphilic dendrimers: Spontaneous asymmetry and dendron separation (2005)
Journal Article
Giupponi, G., & Buzza, D. M. A. (2005). A Monte Carlo study of amphiphilic dendrimers: Spontaneous asymmetry and dendron separation. The Journal of chemical physics, 122(19), doi:10.1063/1.1896347

We study via Monte Carlo simulation the conformation of amphiphilic dendrimers for which terminal monomers (t) and internal monomers (i) interact differently with the solvent (s). Specifically, we have studied g=3,6 dendrimers as a function of χit, χ... Read More