This study explores the diffusion in micropolar thermoelastic materials with voids rotating at a uniform angular velocity. Researchers utilized the harmonic solution as an analytical method to examine the micropolar porous medium affected by gravity and rotation with thermal shock in descriptive equations with the initial mechanical pressure. Numerical calculations were conducted, and results were graphically displayed for displacement, stresses, temperature, change in volume fraction field, microrotation vector, chemical concentration, and chemical potential for two dual-phase-lag parameter values. The study's findings have implications in seismic engineering and manufacturing.