NSOM consists of several critical components: - Light Source: Typically a laser that provides the necessary illumination. - Sharp Tip: Often made from optical fiber or other materials, the tip has a small aperture to interact with the near-field. - Piezoelectric Scanner: Used to precisely control the position of the tip relative to the sample. - Detection System: Includes photodetectors to measure the light interacting with the sample. - Feedback Mechanism: Ensures the tip maintains a consistent distance from the sample surface during scanning.
