Optical manipulation of nanoparticles, molecules, and atoms near interfaces have important applications in optical trapping, nanomechanical devices, microfluidics, and atom optics. We will discuss how photonic spin-orbit coupling near planar waveguides can be used to achieve unusual lateral optical forces on achiral nano-objects. Repulsion of nanoparticles from multi-layered structures and two-dimensional materials, such as graphene, and lateral Casimir forces will also be discussed. Spin-orbit coupling near surfaces allows efficient manipulation of nano-objects without the need for gradient optical forces.
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