  In this paper we investigate the phase diagram of a dumbbell model composed
of two hard-core soft-corona beads through $NpT$ simulations. This particular
system was chosen due to its ability to exhibit a diverse range of stripe
patterns. Analyzing the thermodynamic and structural changes along compression
isotherms, we explore the transition between these distinct patterns. In
addition to the stripe and Low-Density-Triangular solid phases obtained, we
observed a Nematic Anisotropic phase characterized by a polymer-like pattern at
high temperatures and intermediate pressures. Furthermore, we demonstrate the
significant role played by the new characteristic length scale, which arises
from the anisotropic geometry of the dumbbell structure, in the transition
between the stripes patterns. Notably, not only do the structural properties
exhibit intriguing behavior, but the diffusion and density in the nematic fluid
phase also displays a water-like anomalous increase under compression. Those
findings can be valuable in guiding the design of materials based on
nanoparticles, with the aim of achieving specific mesopatterns.
