Figure 1. Basic principles of STM and STS. (a) Schematic representation of STM. A voltage V is applied between the tip and the sample. The tip is rastered across the surface in the xy plane and its z ...

[For illustration, refer to Sonetexpert-analyzer.jpg] ...

For maximum resolution in a scanning tunneling microscope (STM), an extremely sharp metallic tip is required, which serves as the point through which the STM “scans” a sample. A blunt tip reduces STM ...

Using advanced imaging techniques, known as scanning tunneling microscopy (STM) and scanning tunneling spectroscopy (STS), the team, which also includes researchers from California State ...