What are the Common Techniques Used in Nano Spectroscopy?
Several techniques are employed under nano spectroscopy, each serving specific purposes:
Raman Spectroscopy: Used to observe vibrational, rotational, and other low-frequency modes in a system. It's highly effective in providing molecular fingerprints of nanomaterials. Fourier Transform Infrared (FTIR) Spectroscopy: Helps in identifying organic, polymeric, and, in some cases, inorganic materials by measuring their infrared absorption spectra. X-ray Photoelectron Spectroscopy (XPS): Utilized for analyzing the surface chemistry of nanomaterials, providing information about elemental composition and chemical state. Near-field Scanning Optical Microscopy (NSOM): Combines optical spectroscopy and scanning probe techniques to achieve spatial resolution beyond the diffraction limit. Surface-Enhanced Raman Spectroscopy (SERS): Enhances Raman scattering by molecules adsorbed on rough metal surfaces or by nanostructures, increasing sensitivity.
