부산대학교 도서관

Making photonic sintering of metal nanoparticles, a viable nanomanufacturing process for printed electronics requires an understanding of all of the parameters that lead to variability in the photonic sintering process. This article examines the effects of variability in the exact location of nanoparticles within a packing on the thermo-optical properties of the assemblies. Multiple discrete-element method (DEM) simulations for various nanoparticle packing configurations are created, and the absorption, scattering, and extinction cross sections for each of these configurations are calculated. The results of these simulations are then validated using experimental measurements on actual nanoparticle packings and analyzed to determine how uncertainty in the initial nanoparticle packing configuration translates into variances in its calculated thermo-optical properties. Overall, it was found that simulations matched very well with the absorptivity measurements between 400 and 800 nm wavelength light illumination that uncertainty in the initial nanoparticle configuration resulted in about a 15%–25% variance in the thermo-optical properties of the nanoparticle packings for the analyzed cases.