Electromagnetic energy storage balance under resonance condition

How do nanostructures store and dissipate electromagnetic energy?

The processes of storage and dissipation of electromagnetic energy in nanostructures depend on both the material properties and the geometry. In this paper, the distributions of local energy density and power dissipation in nanogratings are investigated using the rigorous coupled-wave analysis.

Is power dissipation related to energy storage?

Both power dissipation and energy storage are related, since electric and magnetic fields can store energy. However, for nonmagnetic materials, only electric current can result in power dissipation. Understanding this relationship may offer deep insight into the radiative properties of nanostructures.

Do nanogratings have local energy storage and power dissipation density?

The local energy storage and power dissipation density in the nanogratings are investigated using the RCWA method. This information helps to understand the geometric effect on the global radiative properties of nanogratings.

Do materials optical properties affect energy storage and power dissipation density?

The optical property of materials has been studied by many researchers in relation to energy storage and power dissipation density. Early works on this topic were conducted by Loudon, Barash, Ginzburg, Brillouin, and Landau, among others. More recent studies have been carried out by Ruppin, Shin et al., and Vorobyev.

Does energy storage enhance absorption?

The enhancement of absorption is accompanied by the improvement of energy storage for material at the resonance of its dielectric function, described by a classical Lorentz oscillator model, and for nanostructures at the resonance induced by the geometric structure.

What is a dimensionless total energy storage?

For the convenience of analysis, a dimensionless total energy storage U ¯ is defined as U ¯ = U / ( u 0 V).", where V denotes the volume of the grating layer.