Hello Dhanush Eswar,

here is a possible solution for your problem.

To find the percentage of voids in a substance, you need to determine the density of the substance and the density of its solid component. The percentage of voids can then be calculated using the following equation:

Void % = [(Density of the substance - Density of the solid component) / Density of the substance] x 100

For the powder, the following steps can be taken:

1) Determine the weight of a known volume of the powder.

2) Calculate the density of the powder by dividing its weight by the volume.

3) Determine the density of the solid component of the powder. This information may be provided by the manufacturer or you may need to perform additional tests to determine it.

4) Use the equation above calculate the percentage of voids.

It's important to note that the void content of a substance can vary depending on the method used to measure density and the conditions under which the measurement is made.

Sincerely,

Pavlo

Have you ever thought of using the pile up volume after nanoindentation testing. You could image the indentation using an AFM.