An operating method with lateral scan for reducing the error in topography caused by the tip-sample angle in atomic...

Area of Science:

• Surface science
• Nanotechnology
• Microscopy

Background:

• Atomic force microscopy (AFM) is a high-resolution surface imaging technique.
• Contact mode AFM typically maintains constant cantilever bending.
• Tip-sample angle variations during scanning introduce topographic errors.

Purpose of the Study:

• To address and mitigate topographic errors in AFM imaging.
• To investigate the impact of tip-sample angle changes on image accuracy.
• To develop and validate a novel AFM operating method for enhanced topographic measurements.

Main Methods:

• Implementation of a new operating method involving lateral scanning in AFM.
• Conducting comparative experiments to evaluate the effectiveness of the new method.
• Analyzing topographic image data obtained with standard and novel AFM techniques.

Main Results:

• The new lateral scan operating method effectively reduces or eliminates topographic errors.
• Errors were significantly decreased in regions previously affected by tip-sample angle variations.
• Measurements in blind scan regions showed improved reliability with the new method.

Conclusions:

• The proposed lateral scan method significantly enhances the accuracy of AFM topographic imaging.
• This operating method provides a reliable solution for minimizing tip-sample angle-induced errors.
• The findings contribute to more precise nanoscale surface characterization using AFM.