Abstract
The skin elasticity is a relevant biomechanical property that can be related to different physiological processes and diseases: hence, it is important to understand and characterize the mechanisms that affect the skin pathologies. In this work, an analysis of the rigidity variations of porcine skin caused by exposure to ultraviolet radiation is presented. For this purpose digital holographic interferometry (dhi) is used as a non-invasive optical technique to study these skin affectations. A new mathematical scheme for the skin rigidity variations was developed and the experimental data was used to study and determine the rigidity coefficients for the samples before and after ultraviolet exposure of the skin. The results after high doses of ultraviolet radiation at 8 mW/cm2 UVA, 8 mW/cm2 UVB and 10 mW/cm2 UVC for periods of 3 min showed that these rigidity coefficients increased above 100% (more than twice) their value after the ultraviolet exposure. The latter suggests a considerable reduction of the porcine skin elasticity when exposed to high doses of ultraviolet radiation, a feature that has been proved to lead to skin melanoma.
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