Conditions
There are five conditions that must be satisfied to use this technique :
1. The sample must have a flat shape of uniform thickness
2. The sample must not have any isolated holes
3. The sample must be homogeneous and isotropic
4. All four contacts must be located at the edges of the sample
5. The area of contact of any individual contact should be at least an order of magnitude smaller than the area of the entire sample.
Read more about this topic: Van Der Pauw Method
Famous quotes containing the word conditions:
“To get it right, be born with luck or else make it. Never give up. Get the knack of getting people to help you and also pitch in yourself. A little money helps, but what really gets it right is to never—I repeat—never under any conditions face the facts.”
—Ruth Gordon (1896–1985)
“There is no society known where a more or less developed criminality is not found under different forms. No people exists whose morality is not daily infringed upon. We must therefore call crime necessary and declare that it cannot be non-existent, that the fundamental conditions of social organization, as they are understood, logically imply it.”
—Emile Durkheim (1858–1917)
“When and under what conditions is the black man to have a free ballot? When is he in fact to have those full civil rights which have so long been his in law?”
—Benjamin Harrison (1833–1901)