Non-Destructive Characterization of Magnetic Polymeric Scaffolds using Terahertz Time-of-Flight Imaging

Magnetic Scaffolds MagS are 3D composite materials, in which magnetic nanoparticles (MNPs) used to load a polymeric matrix. Due their wide use various medical applications, there is an increasing demand of advanced techniques for non-destructive quality assessment procedures aimed at verifying the absence defects and, more generally, dedicated characterization MagS. In this framework, TeraHertz (THz) waves multifunctional scaffolds represents open challenge scientific community. This paper deals with approach by means THz time-domain system reflection mode. analyses performed on poly( $\epsilon$ - capprolactone) (PCL) magnetized iron oxide (Fe notation="LaTeX">$_{3}$ O notation="LaTeX">$_{4}$ ) MNPs through drop-casting deposition and tuned obtain different distributions MNP biomaterial. The proposed data processing allows quantitative MagS, terms (estimated) thickness refractive index. Moreover, procedure identify areas scaffold wherein mainly concentrated thus, it gives us information about spatial distribution.