Application of triangular atomic force microscopy cantilevers to friction measurement with the improved parallel scan...

Area of Science:

• Materials Science
• Nanotechnology
• Surface Science

Background:

• Atomic Force Microscopy (AFM) is crucial for micro/nanoscale tribological analysis.
• Existing AFM friction measurement methods demand precise knowledge of cantilever stiffness and photodetector response.
• These requirements pose challenges for accurate and routine friction force calibration.

Purpose of the Study:

• To develop a simplified analytical model for quantitative friction coefficient measurement using AFM.
• To validate the model through Finite Element Analysis (FEA).
• To demonstrate consistent friction measurements on silicon surfaces using different cantilever dimensions.

Main Methods:

• An analytical model based on cantilever plan-view geometry was developed.
• Finite Element Analysis (FEA) was employed to validate the analytical model's predictions.
• The improved parallel scan method was utilized for friction coefficient measurements.

Main Results:

• The analytical model showed good agreement with FEA simulations.
• Consistent coefficient of friction values were obtained using different AFM cantilevers on silicon.
• The developed model eliminates the need for precise thickness and Young's modulus values for calibration.

Conclusions:

• The presented analytical model offers a simplified approach to friction force calibration in AFM.
• This method enhances the accessibility and accuracy of micro/nanoscale tribological studies.
• The findings contribute to more reliable friction measurements without stringent material property requirements.