Theory of interaction of EM waves from Characterization of Biodegradable Thermoplastic Starch/Poly LacticAcid/NanoClay Filaments Used in ۳D Printing

For an array of homogeneous layers of electromagnetic wave absorbers configured in the z direction (Fig. ۱), the total reflectance (the reflection due to the participation of all the lower layers with the oscillation of the oscillation phase), provided that the flat wave propagates perpendicular to The surface to be considered is modeled by the following equation [۱]:(...) In Equation (۱) Rij and Tij are reflections and transitions between layers i and j, respectively. In this equation, it should be noted that Rij is only the share of reflection between the two layers i and j, while R̃ij is the total reflectance from this layer, which includes the return of the wave going back and forth from the lower layers. All these parameters are complex values including real and imaginary parameters.