Mesoscopic Modelling of the Interaction of Infrared Lasers with Composite Materials: an Application to Human Dental Enamel
نویسندگان
چکیده
The mesostructure and composition of composite materials determine their mechanical, optical and thermal properties and, consequently, their response to incident radiation. We have developed general Finite Element models of porous composite materials under infrared radiation to examine the influence of pore size on one of the determining parameters of the stress distribution in the material: the temperature distribution. We apply them to the specific case of human dental enamel, a material which has nanometer scale pores containing water/organic, and predict the maximum temperature reached after a single 0.35 μs laser pulse of sub-ablative fluence by two lasers: Er:YAG (2.9 μm) and CO2 (10.6 μm). For the Er:YAG laser, the results imply a * Departamento de Física, Universidade do Minho, Campus de Gualtar, 4710-057 BRAGA, PORTUGAL. Tel.: +351253604330 Fax: +351253678981 E-mail: [email protected]
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