Sharp blow-up result for the intercritical Inhomogeneous NLS equation

In this paper, we consider the intercritical inhomogeneous nonlinear Schrödinger equation. For the radial symmetry initial data, we construct the ring blow-up solutions and obtain blow-up speed. This result implies that the upper bound on the blow-up speed given by Cardoso and Farah [J. Funct. Anal.,281(8) No. 109134, (2021)] is sharp.