User:Pranatisahoo

Working Principle
Mostly photons exhibit linear momentum as well as the angular momentum. These properties attribute towards different phenomena like induction of mechanical torque, optical trapping and cooling both in macro scale and nanoscale observations. Plasmon is the resonant mode that involves the interaction between free charges and light.In a metallic nanostructure,when the applied electric field is resonant with its plasmons,the interaction between light and matter can be greatly enhanced.Free electrons in metals can be driven by the electric field of generated by the incident light. These phenomenon also modifies the light by influencing its electric and magnetic field.The whole process induces the optical torque which can give a motion to the metallic nanostrctures.