Optical forces, torques and force densities calculated at a microscopic level using a self-consistent hydrodynamics method

Abstract

The calculation of optical force density distribution within a material is challenging at the nanoscale, where quantum and non-local effects emerge and macroscopic parameters such as permittivity become ill-defined. We demonstrate that the microscopic optical force density of nanoplasmonic systems can be defined and calculated using a self-consistent hydrodynamics model that includes quantum, non-local and retardation effects. We demonstrate this technique by calculating the microscopic optical force density distributions and the optical binding force induced by external light on nanoplasmonic dimers. We discover that an uneven distribution of optical force density can lead to a spinning torque acting on individual particles.

14 pages, 4 figures

References in corpus (7)

• Resonance shifts and spill-out effects in self-consistent hydrodynamic nanoplasmonics
• Quantum Hydrodynamic Theory for Plasmonics: Impact of the Electron Density Tail
• Surface plasmon resonance spectroscopy of single bowtie nano-antennas using a differential reflectivity method
• Electromagnetic stress at the boundary: photon pressure or tension?
• Plasmonic modes of polygonal particles calculated using a quantum hydrodynamics method
• Analytic derivation of electrostrictive tensors and their application to optical force density calculations
• Optomechanical deformation and strain in elastic dielectrics

Cited by in corpus (6)

• Laplacian-Level Quantum Hydrodynamic Theory for Plasmonics
• A general framework of canonical quasinormal mode analysis for extreme nano-optics
• Anomalous Geometric Spin Hall Effect of Light?
• Optical forces and torques exerted on coupled silica nanospheres: unexpected effects due to the multiple scattering
• Nano-corrugation induced forces between electrically neutral plasmonic objects
• Optical properties of coupled silicon nanowires and unusual mechanical inductions