Biosensing Using SERS Active Gold Nanostructures.

Area of Science:

• Analytical Chemistry
• Biomedical Engineering
• Spectroscopy

Background:

• Surface-enhanced Raman spectroscopy (SERS) is a valuable technique for biosensing.
• Its advantages include fingerprint recognition, high sensitivity, multiplex detection, and biocompatibility.

Purpose of the Study:

• To provide a comprehensive overview of SERS for biomedical and biosensing applications.
• To discuss SERS mechanisms, substrates, characterization, and applications.

Main Methods:

• Review of electromagnetic and chemical enhancement mechanisms.
• Illustration of various SERS substrates and fabrication methods, emphasizing gold nanostructures.
• Analysis of SERS sensor performance factors: sensitivity, reproducibility, stability, configuration, and nanotoxicity.

Main Results:

• Detailed explanation of SERS amplification mechanisms.
• Comparison of different substrate types and fabrication techniques.
• In-depth analysis of critical SERS sensor performance metrics.
• Presentation of diverse biomedical applications.

Conclusions:

• SERS is a powerful and versatile tool for advanced biosensing and biomedical diagnostics.
• Understanding SERS mechanisms, substrate design, and performance evaluation is crucial for successful application development.