AtomicJ Files

AtomicJ 2.1 provides improved support for thin samples. Piecewise polynomial approximations (see pages 122 - 123 in the User's Manual) for load - indentation realtion are available for conical and paraboloidal/spherical tips. AtomicJ uses them now in combination with asymptotic solutions for very thin layers (Jaffar 1989, Yang 2003), so that layers of arbitrary thickness are supported.
The approximations were calculated based on the numerical solutions to the Lebedev - Ufliand (1958) and Pupyrev - Ufliand (1960) integral equations, which are exact solutions of the problem of frictionless contact with a linear elastic, isotropic layer, either free to slip over or bonded to the rigid substrate

To use these approximations for processing force - distance curves, please select the "Lebedev - Chebyshev" substrate effect correction method in the "Advanced" tab of the "Processing assistant".