Long-range Self-assembly via the Mutual Lorentz Force of Plasmon Radiation
Mesoscale and Nanoscale Physics
2018-05-09 v1 Optics
Abstract
Long-range interactions often proceed as a sequence of hopping through intermediate, statistically-favored events. Here, we identify a widely-overlooked mechanism for the mechanical motion of particles that arises from the Lorentz force and plasmon radiation. Even if the radiation is weak, the nonconservative Lorentz force produces stable locations perpendicular to the plasmon oscillation; over time, distinct patterns emerge. Experimentally, linearly-polarized light leads to the formation of 80-nm Au nanoparticles, perpendicularly-aligned, with lengths that are orders of magnitude greater than their plasmon near-field interaction. There is a critical intensity threshold and optimal concentration for observing self-assembly.
Cite
@article{arxiv.1801.09331,
title = {Long-range Self-assembly via the Mutual Lorentz Force of Plasmon Radiation},
author = {Haojie Ji and Jacob Trevino and Raymond Tu and Ellen Knapp and James McQuade and Vitaliy Yurkiv and Farzad Mashayek and Luat T. Vuong},
journal= {arXiv preprint arXiv:1801.09331},
year = {2018}
}