Propagation of thermal waves in multilayered spheres
Propagation of thermal waves in multilayered spheres
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DOI：
10.1063/1.2735414
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发表时间：
2007-05
影响因子：
3.2
通讯作者：
N. Madariaga;A. Salazar
中科院分区：
文献类型：
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作者：
N. Madariaga;A. Salazar
在过去的几年里，人们对将光热技术应用于非平坦表面的样品，特别是圆柱体和球体的兴趣与日俱增。本文用四极子法计算了多层球形样品在调制光束作用下的表面温度振荡。对几种照明几何进行了研究。此外，在模型中还考虑了层与层之间的粘附性以及表面的热损失。这种理论方法允许使用光热技术来表征具有连续变化的深度导热系数的球形样品的热性质。
In the last years there has been a growing interest in the application of photothermal techniques to samples with nonflat surfaces, in particular cylinders and spheres. In this work the surface temperature oscillation of multilayered spherical samples which are heated by a modulated light beam is calculated by using the quadrupole method. Several illumination geometries have been studied. Moreover, the lack of adherence between layers, as well as heat losses at the surface, has been considered in the model. This theoretical approach allows photothermal techniques to be used to characterize the thermal properties of spherical samples with continuously varying in-depth thermal conductivity.