Structureless excitation and manipulation of dynamic holographic plasmonic slides

Surface plasmons are bound modes at metal–dielectric interfaces and enable a wide range of applications. However, holographic plasmonic fields are usually realized with complex nanostructures, introducing diffraction background and limiting flexibility and dynamic reconfigurability. Here, we propose a structureless holographic approach for generating complex plasmonic fields and controlling their energy flow through a reverse-designed algorithm. Both theoretical and experimental results demonstrate that holographic plasmonic fields can be effectively excited and flexibly modulated on a flat metal film. Furthermore, by loading orbital angular momentum onto the holographic plasmonic field, a controllable energy flow aligned with the plasmonic field can be achieved, visualizing through gold particles transporting along the designed trajectory like a surface slide. This work offers a promising structureless pathway for generation and manipulation of holographic plasmonic fields as well as other surface-wave fields, demonstrating significant potential for controllable on-chip optical energy and particle transmission. A structureless holographic approach is proposed to generate and control complex plasmonic fields on flat metal films. This method facilitates dynamic manipulation of energy flow and enables the guided transport of particles like a surface slide.