Electromagnetic wave energy storage

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.

What is the mechanism of EMW absorbing materials?

The 39 common mechanism of electromagnetic wave (EMW) absorbing materials is to absorb EMW energy and 40 convert it to heat energy through loss mechanisms such as polarization loss and conduction loss.

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.

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 electromagnetic wave (EMW) & why is it important?

With the vigorous development of artificial intelligence & internet of things (AIoT), electromagnetic wave (EMW) has become an indispensable carrier for energy and information interaction 1, 2.