主催: The Japan Society of Applied Physics
会議名: 20th International Colloquium on Scanning Probe Microscopy
開催地: Okinawa, Japan
開催日: 2012/12/17 - 2012/12/19
Measurements of surface roughness by atomic force microscope (AFM) may contain an important error from the finite size of AFM tips. The error is rarely evaluated in experiments due to the lack of a quantitative mathematical description of the effect of tip shape on measurements of the roughness of three-dimensional (3D) surfaces. By introducing a parameter called the normalized tip width, we determined approximate generalized formulas that describe the dependencies of three main types of AFM roughness measurements on the parameters of a tip–surface system for Gaussian rough surfaces based on simulations. General models or a practical database may be extracted after establishment of formulas for more types of surfaces.