Deconvoluting the vibrations and harmonics in solid‐solid interfaces is crucial for designing materials with improved performance, durability, and functionality. The measured vibrating microcantilever signal in the dynamic atomic force microscopy (AFM) encompasses a multitude of distinct signatures reflecting a diverse array of material properties. Nevertheless, uncertainties persist in decoding these signatures, primarily arising from the interplay between attractive and repulsive forces. Consequently, it is challenging to correlate the generated harmonics within the solid‐solid interfaces with the imaged phase and topography of materials, as well as the occasional observed contrast reversal. In this study, the vibration harmonics produced at solid‐solid interfaces are correlated, linking them to short‐range nano‐mechanical characteristics through a comprehensive blend of theory, simulation, and experimental methods. These findings shed light on the roots of harmonic generation and contrast reversals, opening avenues for designing innovative materials with customized properties.

中文翻译：

---

振动固-固界面的不协调谐波


对固-固界面中的振动和谐波进行去卷积对于设计具有改进性能、耐用性和功能性的材料至关重要。在动态原子力显微镜 （AFM） 中测得的振动微悬臂信号包含多种不同的特征，反映了各种材料特性。然而，解码这些特征的不确定性仍然存在，主要来自吸引力和排斥力之间的相互作用。因此，将固-固界面内产生的谐波与材料的成像相位和形貌以及偶尔观察到的对比度反转相关联是具有挑战性的。在这项研究中，固体-固体界面处产生的振动谐波是相关的，通过理论、仿真和实验方法的全面融合，将它们与短程纳米力学特性联系起来。这些发现揭示了谐波产生和对比度反转的根源，为设计具有定制特性的创新材料开辟了途径。