  The Dirac nodal-line semimetals (DNLS) are new promising materials for
technological applications due to its exotic properties, which originate from
band structures dispersion and nodal-line behavior. We report a study on
effects of several possibilities of strains in ZrSiSe DNLS on band structure
dispersion and nodal-line behavior through the means of the density functional
theory (DFT) calculations. We found that the Dirac nodal-line of ZrSiSe is
robust to all strain with reasonable magnitude. Although, there are significant
changes in gap, amplitude, and energy relative to Fermi energy. We also found
the effective strains to tune the nodal-line and band structures are
equi-biaxial tensile, uniaxial (100) tensile, and uniaxial (110) tensile
strain.
