Lee Manhee, Jhe Wonho
School of Physics and Astronomy, Seoul National University, Seoul 151-747, Korea.
Phys Rev Lett. 2006 Jul 21;97(3):036104. doi: 10.1103/PhysRevLett.97.036104. Epub 2006 Jul 19.
We present a general analytical theory that enables one to determine accurately the unknown tip-sample interactions from the experimental measurement of the amplitude and phase of the oscillating tip in amplitude-modulation atomic force microscopy (AM-AFM). We apply the method to the known Lennard-Jones-type forces and find excellent agreement with the reconstructed results. AM-AFM, widely used in air and liquid, is now not only an imaging tool but also a quantitative force measurement tool.
我们提出了一种通用的分析理论，该理论能够根据调幅原子力显微镜（AM-AFM）中振荡探针振幅和相位的实验测量结果，精确确定未知的探针-样品相互作用。我们将该方法应用于已知的 Lennard-Jones 型力，并发现与重建结果高度吻合。AM-AFM 在空气和液体中广泛应用，现在它不仅是一种成像工具，也是一种定量力测量工具。
