Towards the determination of elastic constants on a submicron scale using scanning acoustic force microscopy

This paper reports first steps towards the determination of elastic constants with submicron lateral resolution. The experimental phase velocity dispersion data were obtained on a micron scale using scanning acoustic force microscopy. The minimum of the corresponding error field is only weakly localized, thus giving a large error for the elastic constants. The localization can not be increased by using more of data points. In order to decrease the elastic constant´s error, a Love mode is additionally regarded. However, the error field crossing is in this case not leading to a significant increase of the accuracy. We propose the inclusion of further surface guided modes