PDLTS stands for Photothermal Deflection Laser Thermal Spectroscopy. It is a technique used in materials science and condensed matter physics to investigate the thermal properties of solid materials.
In PDLTS, a sample is subjected to a laser beam, which is absorbed by the material, causing localized heating. As the material heats up, it expands, resulting in a change in its refractive index. This change in refractive index causes the laser beam to be deflected, and this deflection is measured and analyzed.
By studying the deflection of the laser beam, researchers can gain valuable information about the thermal properties of a material, including its thermal conductivity, thermal diffusivity, and optical absorption coefficient. PDLTS is particularly useful for studying thin films, nanostructures, and other materials with small dimensions.
The technique is non-destructive and can be performed with high spatial resolution, making it a versatile tool in materials research. It can be used to investigate the thermal properties of a wide range of materials, including semiconductors, metals, insulators, and composite materials.
Overall, PDLTS is a powerful experimental technique that allows scientists to gain insights into the thermal behavior of materials. Its applications range from fundamental research to the development of new materials for various technological applications.
