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Contributed Speaker

Giovanni Sáenz-Arce

Department of Physics, University of Murcia, Spain

E-mail

giovanni.saenz@um.es

Calibration of oscillation amplitude in torsional mode

Giovanni Sáenz-Arce ^1,2* , Ana Galindo-Bernabeu ^1,3 , Pranav Sudersan ¹ and Jaime Colchero ¹

¹ Centro de Investigación en Óptica y Nanofísica, Departamento de Física, Universidad de Murcia, 30100 Murcia, Spain.

² Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad Nacional, Heredia 86-3000, Costa Rica.

³ Universidad Técnica Nacional (UTN), Alajuela, Costa Rica.

Accurate calibration of oscillation amplitude in torsional mode is crucial for the correct analysis and interpretation of data in experiments involving dynamic in scanning force microscopy. This study focuses on the development and implementation of advanced methods to calibrate the oscillation amplitude in systems operating in torsional mode. A combination of theoretical and experimental approaches is employed to enhance the accuracy and repeatability of oscillation measurements. The typical electronics used to process the dynamic motion of the cantilever can be adjusted to transfer the thermal noise of the cantilever motion from its resonance frequency to a much lower frequency within the typical bandwidth of the corresponding data acquisition electronics of a scanning force microscopy system. The applications of this enhanced calibration method are far-reaching, particularly in the study of liquid neck formation and rupture. Accurate measurements of torsional oscillations are essential for understanding the dynamics of liquid bridges and the forces involved in their stability and breakage. The advancements proposed have significant implications for the accurate measurement of dynamic processes, with specific applications in the formation and rupture of liquid necks, thus contributing to the broader field of material science and nanotechnology in wetting properties of surface.

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