Deformation of elastic nanotubes via self-assembly of surface-adhesive nanoparticles
- Event time: 1:00pm
- Event date: 15th March 2010
- Speaker: Josep Pamies (University of Edinburgh)
- Location: Room 2511, James Clerk Maxwell Building (JCMB) James Clerk Maxwell Building Peter Guthrie Tait Road Edinburgh EH9 3FD GB
Elastic sheets with macroscopic dimensions are easy to mould by bending and stretching. Yet shaping nanometric sheets by mechanical manipulation is hard. In this talk I will show that nanoparticle self-assembly could be used to this end. I will demonstrate by Monte Carlo simulation that spherical nanoparticles adhering to the outer surface of an elastic nanotube can self-assemble into linear structures as a result of curvature-mediated interactions. We find that nanoparticles arrange into rings or helices on stretchable nanotubes, and as axial strings on nanotubes with high rigidity to stretching. These self-assembled structures are inextricably linked to a variety of nanotube profiles, which can be controlled by tuning the concentration of nanoparticles and their adhesion strength. Our results open the possibility of designing nanoparticle-laden tubular nanostructures with tailored shapes, for potential applications in materials science and biomedical fields.
This is a weekly series of informal talks given primarily by members of the soft condensed matter and statistical mechanics groups, but is also open to members of other groups and external visitors. The aim of the series is to promote discussion and learning of various topics at a level suitable to the broad background of the group. Everyone is welcome to attend..