With recent advances in scanning probe microscopy (SPM). it is now routine to determine the atomic structure of surfaces and molecules while quantifying the local tip-sample interaction potentials. Such quantitative experiments using noncontact frequency modulation atomic force microscopy is based on the accurate measurement of the resonance frequency shift due to the tip-sample inter... https://www.ashleyshomestores.shop/product-category/3-piece-modular-sectional/