Standards models of dust in the diffuse interstellar medium adopt
different size distributions \citep{Mathis77,Greenberg83} and explain
the mean dust extinction of the Milky Way by adopting grains at radii
below $\sim 250$\,nm (e.g. citep{Mathis77, Desert90, Mathis90, S92,
Dwek97, WD01, DraineLi01, DraineLi07, Das10, Draine09, Compiegne11,
S14, Jones17, V16, Guillet18.} 




---

microsized grains

have been studied by \cite{43, 44} and used in models by \citeOrmel11, 49, W15b, Draine21, Ysard
et al. 2024}