  We explore the pressure versus temperature phase diagram of dimeric Janus
nanoparticles using Molecular Dynamics simulations. The nanoparticle was
modeled as a dumbbells particle, and have one monomer that interacts by a
standard Lennard Jones potential and another monomer that is modeled using a
two-length scale shoulder potential. Monomeric and dimeric systems modeled by
this shoulder potential show waterlike anomalies, and we investigate if a Janus
nanoparticle composed by one anomalous monomer will exhibit anomalous behavior
and self-assembly structures. The influence of the non-anomalous monomer in the
dimeric system properties was explored. We show that the diffusion anomaly is
maintained, while the density anomaly can disappear depending on the
non-anomalous monomer characteristics. As well, the self-assembled structures
are affected. Our results are discussed in the basis of the distinct
monomer-monomer interactions and on the two-length scale fluid characteristics.
