Home List of Titles Tunable 3D and 2D polystyrene nanoparticle assemblies using surface wettability, low volume fraction and surfactant effects
Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/198525
- Tunable 3D and 2D polystyrene nanoparticle assemblies using surface wettability, low volume fraction and surfactant effects
- Pillai, S.; Hemmersam, A. G.; Mukhopadhyay, R.; Meyer, R. L.; Moghimi, S. M.; Besenbacher, F.; Kingshott, P.
- Polymer-based nanopatterning on metal surfaces is of increasing importance to a number of applications, including biosensors, bioelectronic devices and medical implants. Here we show that polycrystalline gold surfaces can be functionalized with monocomponent nanoparticle (NP) assemblies by a simple drop deposition method. Ordered 3D hexagonal close-packed structures consisting of 350 nm polystyrene (PS) NPs on hydrophobically modified gold surfaces from solutions of very low volume fraction (phiv = 0.0006) were obtained as a result of capillary force induced self-assembly, whilst 2D self-assembly of PS NPs was generated over large area on hydrophilic gold and TiO2 surfaces by spin coating. Furthermore, we show that when Triton X-100 is added to the PS NP suspending medium longer range ordering is obtained. Our observations may initiate interesting applications in the areas of nanoengineering of metal-based sensors and as a means to design new nanostructures for biocompatible implant surfaces.
- Publication type
- Journal article
- Nanotechnology, Vol. 20, no. 2 (Jan 2009), article no. 025604
- Publication year
- FOR Code(s)
- 1007 Nanotechnology; 0904 Chemical Engineering; 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
- Acceleration; Biocompatibility; Biocompatible materials; Bioelectronic devices; Biomaterial; Biosensors; Capillary; Capillary forces; Chemistry; Chlormethine; Drop depositions; Force; Functional polymers; Functionalised; Gold; Gold deposits; Gold metallurgy; Gold surfaces; Hydrophobicity; Implant; Implant surfaces; Medical implants; Metal; Metal surfaces; Nanoengineering; Nanomaterial; Nanoparticles; Nanopatterning; Polycrystalline golds; Polymer; Polystyrene derivative; Polystyrene nanoparticles; Polystyrenes; Self assembly; Surface property; Surface wettabilities; Surface-active agents; Surfactant; Surfactant effects; Suspending mediums; Titanium dioxide; Titration; Triton x-100; Two dimensional; Wettability
- Institute of Physics Publishing
- Publisher URL
- Copyright © 2009 IOP Publishing Ltd.
- Peer reviewed