Article ID Journal Published Year Pages File Type
5428717 Journal of Quantitative Spectroscopy and Radiative Transfer 2013 9 Pages PDF
Abstract

We produced self-assembled, densely-packed and highly-ordered aggregates of silica nanoparticles arranged in a rather regular hexagonal-pentagonal surface lattice. To investigate the formation of these aggregates, produced by means of a spray drying method, we developed a light extinction setup and all related models. It is shown that with a geodesic dome model, to describe their morphology, and a T-matrix method to calculate their extinction cross sections, the size distribution and concentration of these flowing aggregates may be recovered from the inversion of transmission spectra.

► We produced sphere aggregates with a regular hexagonal-pentagonal surface lattice. ► Their morphology is modeled with geodesic dome and hexagonal close packing models. ► Mie and T-matrix calculations are used to estimate their UV-NIR extinction. ► A fitting-model is used to invert successfully experimental transmission spectra. ► Aggregates size distribution and concentration are determined in-situ and accurately.

Related Topics
Physical Sciences and Engineering Chemistry Spectroscopy
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