Akademik Veri Yönetim Sistemi
The Third Emerging Technologies in Mechanical Engineering (ETME2025), Gangwon-Do, Güney Kore, 10 - 12 Aralık 2025, ss.1, (Özet Bildiri)
Multi-frequency excitation schemes are applied to resonate the micro-cantilever for enhanced sensitivity to tip-sample interaction forces in AFM. External forces such as acoustic forces act on the micro-cantilevers during AFM operations, thereby affecting their oscillating behaviours. This paper presents theoretical research performed to explore behaviors of the micro-cantilever under van der Waals forces in air and methanol / ethylacetate mixtures in the presence of dynamic acoustic forces. For particular operating conditions, the responses of the proposed dynamic model demonstrate good agreement with the AFM measurements given in the literature. Moreover, application of biharmonic excitations yields notable enhancements in sensitivity of amplitude, phase shift, and frequency shift at the particular separation distances below 10 nm in air, when compared with the bimodal operations. Therefore, the effects of acoustic emissions on the micro-cantilever dynamics are to be considered for precise quantification of tip-sample interaction forces during multi-frequency AFM operations, especially in air.