Thermoelastic behavior of skin tissue induced by laser irradiation based on the generalized dual-phase lag model

This paper analyzes the thermoelastic responses of skin tissue during laser irradiation based on a generalized dual-phase-lag (DPL) model. The method of separation of variables is utilized to obtain the analytical solutions for thermal and mechanical responses. The influences of some crucial parameters on temperature, displacement and stress evolutions are discussed, including the phase lag of heat flux, the phase lag of temperature gradient and the phase lag of laser pulse, the coupling factor between tissue and blood, the porosity of tissue, the equivalent diameter of tissue and the diameter of blood vessels. The generalized DPL bio-heat transfer model predicts different results from those by the classical DPL model and Pennes model. The equivalent diameter of tissue affects the coupling factor between tissue and blood, while the diameter of blood vessels mainly affects the porosity of tissue.

Automated summary

This paper analyzes the thermoelastic responses of skin tissue during laser irradiation using a generalized dual-phase-lag model and discusses the effects of various parameters on temperature, displacement, and stress evolutions. The study shows that the generalized DPL bio-heat transfer model produces different results from the classical DPL model and Pennes model, highlighting the importance of parameters such as tissue equivalent diameter and blood vessel diameter.