Akademik Veri Yönetim Sistemi
20th Nanoscience and Nanotechnology Conference, İzmir Institute of Technology, Türkiye, 26 - 28 Ağustos 2026, ss.1, (Özet Bildiri)
Observable
sensitivities of the micro-cantilevers to external forces are enhanced using
single- and multi-frequency excitation schemes in nanometrological
applications. Tip-sample interaction forces such as Casimir and van der Waals
forces are quantified using oscillation amplitudes and phase shifts at the fundamental
and higher flexural eigenmodes in multi-frequency Atomic Force Microscopy (AFM).
Single-frequency excitations enable to obtain maximum amplitude responses using
the micro-cantilever with a smaller effective mass when compared with
multi-frequency excitations. Additionally, nonlinear observable sensitivities
to van der Waals interactions are enhanced using multimodal operations
depending on the elastic stiffnesses and the quality factors of the AFM
micro-cantilevers. Furthermore, highly sensitive amplitude responses to acoustic
forces can be explored using the computational methods. The frequencies of
acoustic emissions with larger sound pressure levels within kHz range can be
detected using the analytical technique based on the Laplace transform method. In
micro-rheological applications, the shifts in resonance frequencies of the
micro-cantilever are used to measure the fluid properties. Sensitivities to dynamic
viscosity and density can be quantified by exploiting the steady-state
oscillations based on the forced van der Pol oscillator. Therefore, the
vibration observables of the resonating micro-cantilevers can be utilized to
quantify the sensitivities to diverse external forces for different technological
applications.