Lateral chirality-sorting optical forces


Amaury Hayat, J. P. BALTHASAR MUELLER, and Federico Capasso. 2015. “Lateral chirality-sorting optical forces.” PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 112, 43, Pp. 13190-13194. Publisher's Version
13190.full_.pdf754 KB


The transverse component of the spin angular momentum of evanescent waves gives rise to lateral optical forces on chiral particles, which have the unusual property of acting in a direction in which there is neither a field gradient nor wave propagation. Because their direction and strength depends on the chiral polarizability of the particle, they act as chirality-sorting and may offer a mechanism for passive chirality spectroscopy. The absolute strength of the forces also substantially exceeds that of other recently predicted sideways optical forces.
Last updated on 05/26/2020