'Photonic Hook' based optomechanical nanoparticle manipulator

Specialized electromagnetic fields can be used for nanoparticle manipulation along a specific path, allowing enhanced transport and control over the particle’s motion. In this paper, we investigate the optical forces produced by a curved photonic jet, otherwise known as the “photonic hook”, created using an asymmetric cuboid. In our case, this cuboid is formed by appending a triangular prism to one side of a cube. A gold nanoparticle immersed in the cuboid’s transmitted field moves in a curved trajectory. This result could be used for moving nanoparticles around obstacles; hence we also consider the changes in the photonic hook’s forces when relatively large glass and gold obstacles are introduced at the region where the curved photonic jet is created. We show, that despite the obstacles, perturbing the field distribution, a particle can move around glass obstacles of a certain thickness. For larger glass slabs, the particle will be trapped stably near it. Moreover, we noticed that a partial obstruction of the photonic jet’s field using the gold obstacle results in a complete disruption of the particle’s trajectory

Electromagnetic Forces In Negatively Refracting Photonic Crystals

Electromagnetic (EM) waves exert forces on objects. The nonconservative part of these forces is determined by the gradient of phase (wavevector) of EM field. Through special structures, manipulation of the direction of these forces becomes possible. Here we investigate numerically the forces created by left-handed negatively refracting photonic crystals-these can create EM waves with the Poynting vector and wave vector pointing in opposite directions. We show that negative gradient of phase still creates a positively directed electromagnetic force

Scattering Forces Within A Left-Handed Photonic Crystal

Electromagnetic waves are known to exert optical forces on particles through radiation pressure. It was hypothesized previously that electromagnetic waves inside left-handed metamaterials produce negative radiation pressure. Here we numerically examine optical forces inside left-handed photonic crystals demonstrating negative refraction and reversed phase propagation. We demonstrate that even though the direction of force might not follow the flow of energy, the positive radiation pressure is maintained inside photonic crystals

Electromagnetic Forces In Negatively Refracting Photonic Crystals

It is well known that electromagnetic (EM) waves exert forces on objects. Non-conservative part of these forces is determined by the gradient of phase (wavevector) of EM field. Using special structures, it is possible to manipulate the direction of these forces. In this paper, we numerically investigate the forces generated by left-handed negatively refracting photonic crystals which can create EM waves with Poynting vector and wave vectors having opposite directions. We show here that negative gradient of phase still creates a positively directed electromagnetic force

\u27Photonic Hook\u27 Based Optomechanical Nanoparticle Manipulator

Specialized electromagnetic fields can be used for nanoparticle manipulation along a specific path, allowing enhanced transport and control over the particle\u27s motion. In this paper, we investigate the optical forces produced by a curved photonic jet, otherwise known as the photonic hook , created using an asymmetric cuboid. In our case, this cuboid is formed by appending a triangular prism to one side of a cube. A gold nanoparticle immersed in the cuboid\u27s transmitted field moves in a curved trajectory. This result could be used for moving nanoparticles around obstacles; hence we also consider the changes in the photonic hook\u27s forces when relatively large glass and gold obstacles are introduced at the region where the curved photonic jet is created. We show, that despite the obstacles, perturbing the field distribution, a particle can move around glass obstacles of a certain thickness. For larger glass slabs, the particle will be trapped stably near it. Moreover, we noticed that a partial obstruction of the photonic jet\u27s field using the gold obstacle results in a complete disruption of the particle\u27s trajectory

'Photonic Hook' based optomechanical nanoparticle manipulator

Specialized electromagnetic fields can be used for nanoparticle manipulation along a specific path, allowing enhanced transport and control over the particle’s motion. In this paper, we investigate the optical forces produced by a curved photonic jet, otherwise known as the “photonic hook”, created using an asymmetric cuboid. In our case, this cuboid is formed by appending a triangular prism to one side of a cube. A gold nanoparticle immersed in the cuboid’s transmitted field moves in a curved trajectory. This result could be used for moving nanoparticles around obstacles; hence we also consider the changes in the photonic hook’s forces when relatively large glass and gold obstacles are introduced at the region where the curved photonic jet is created. We show, that despite the obstacles, perturbing the field distribution, a particle can move around glass obstacles of a certain thickness. For larger glass slabs, the particle will be trapped stably near it. Moreover, we noticed that a partial obstruction of the photonic jet’s field using the gold obstacle results in a complete disruption of the particle’s trajectory