The College of Science, University of Thi-Qar discussed a Ph.D. dissertation on a dual quantum dot system with metallic nanoparticles as a heat source by the postgraduate student, Mr. Mohammed Rahma Harb.

The dissertation proposed a new structure known as the dual metallic nanoparticle quantum dot (DQD-MNP) as a highly efficient model for nanoheaters, as well as evaluating its performance in generating controlled temperatures and compares its efficiency with that of conventional metallic nanoparticles, thus enhancing its potential applications in advanced medical and engineering fields.

The dissertation reviewed on computer simulations using MAOUD-37 software based on MATLAB, employing orthogonal plane wave approximation to calculate energy levels and transition moments.

The dissertation highlighted in the derivation of a new mathematical model for the temperature of quantum dots using density matrix theory, incorporating phonon effects, carrier temperatures, and lattice temperatures and this represents a significant scientific contribution to the field of thermal modeling of nanosystems.

The thesis results demonstrated the superiority of the proposed (DQD–MNP) structure over conventional metallic nanoparticles, achieving significantly higher thermal differentials with lower optical power consumption. Furthermore, it has the potential to be employed in nanosurgical applications using very low laser energy.

Media and Government Communication Directorate 

Ministry of Higher Education and Scientific Research

July 5, 2026