Friday, November 21, 2014
Building Pillars of MesoScale Particles on a Surface
As in our recent work using tricked-up hard particles, we wondered whether we could answer this question without using explicit soft particle interactions. It does, indeed, appear to work in the sense that we are able to capture the differences in coverage of the surface between a metastable coverage in which particles once trapped at a site remain there, and the relaxed coverage in which particles are allowed to spread across the surface. We also found that relaxation leads to reduced coverage fractions rather than larger coverage as one might have expected a spreading of particles due to the relaxation.
This work was performed by my graduate student, Dr. Galen Craven, in collaboration with a research scientist in my group, Dr. Alex Popov. The title of the article is "Effective surface coverage of coarse grained soft matter.” The work was funded by the NSF. It was published on-line in J. Phys. Chem. B back in July, and I’ve been waiting to write this post hoping that it would hit the presses. Unfrotunately, it’s part of a Special Issue on Spectroscopy of Nano- and Biomaterials which hasn’t quite yet been published. But I hope that it will be soon! Click on the doi link to access the article.