Frequently Asked Questions

Laser/Light Flash Analysis

Yes, but this is - in most cases - negligible. However, especially when determining the thermal diffusivity of thin and rapidly conductive samples, however, it is advisable to sprinkle the samples only lightly with graphite. In this way, the influence due to the graphite layer can be minimized. When determining the specific heat capacity by means of LFA, a covering graphite coating of the specimens and the references is indispensable. Ideally, for Ideally, the thermal diffusivity and specific heat capacity of such samples should be determined separately.

To ensure absorption of the energy of the light or laser pulse on the bottom side of the sample and measurement of the temperature rise on the top side by means of an infrared detector, such samples must be coated from both sides.