Recommended Sample Preparation
For the best thermal transfer into and through your sample the following factors should be considered:
- It should be as small as is feasible. Large samples have a greater thermal mass and may lag behind the temperature of the heater.
- It should be as thin (vertically) as possible. Thicker samples may develop a temperature gradient resulting in the temperature at the visible surface of the sample being lower than that reported by the heater.
- It should be as flat as possible, in order to have the best thermal contact with the heater or cover slip. With powder samples it is a good idea to place a cover slip over the sample and tamp it down to try to remove air gaps prior to heating. With metal samples it may be helpful to melt the sample and allow it to cool and solidify again prior to starting the experiment.