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\begin{document}

\title{Structure \& dynamics of fractal-like particles made by agglomeration
and sintering}



\author[1]{Maximilian Eggersdorfer}%
\author[2]{Eirini Goudeli}%
\affil[1]{Novartis AG}%
\affil[2]{The University of Melbourne}%


\vspace{-1em}



  
  \date{May 18, 2024}


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\begin{abstract}
The growth of silica nanoparticles by agglomeration and viscous flow
sintering is studied from free molecular to transition regime at high
temperatures by discrete element method simulations. The effect of
temperature on the aggregate mobility and gyration radii, particle
morphology and collision frequency function is elucidated as function of
the number of primary particles. The ratio between the characteristic
sintering time and characteristic collision time controls the particle
size and structure, quantified by the mass fractal dimension. The effect
of this ratio of characteristic times on aggregate morphology is
illustrated at various temperatures. Finally, when sintering is
negligible, the overall collision frequency is 90\% larger than that
predicted by the classic Fuchs collision kernel for monodisperse
agglomerates in the near free molecular and transition regime. For
comparable coagulation and sintering rates, where aggregates with sinter
bonds are formed, the overall collision frequency increases an
enhancement of \textless{}90\% is observed.%
\end{abstract}%



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\textbf{Hosted file}

\verb`Eggersdorfer_Goudeli_AIChE.docx`  available at \url{https://authorea.com/users/336274/articles/462243-structure-dynamics-of-fractal-like-particles-made-by-agglomeration-and-sintering}

\textbf{Hosted file}

\verb`Eggersdorfer_Goudeli_AIChE_Figures.docx`  available at \url{https://authorea.com/users/336274/articles/462243-structure-dynamics-of-fractal-like-particles-made-by-agglomeration-and-sintering}

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