Despite its benefits, AES has several limitations:
1. Surface Sensitivity: While surface sensitivity is an advantage, it can also be a limitation as AES cannot probe deeper into the bulk of the material. 2. Sample Damage: The electron beam used in AES can potentially damage sensitive nanomaterials, altering their surface composition. 3. Complex Data Interpretation: The interpretation of Auger spectra can be complex and requires expertise, as overlapping peaks and background noise can complicate data analysis.