Microfluidic SERS devices: brightening the future of bioanalysis

Area of Science:

• Biomedical Engineering
• Spectroscopy
• Nanotechnology

Background:

• Surface-enhanced Raman spectroscopy (SERS) tags offer significant advantages for biomedical applications, including indirect analyte identification with specific spectral fingerprints.
• SERS tags provide high sensitivity and multiplexing potential, proving valuable in both in vitro and in vivo assays.
• Recent advancements in nanomaterials, Raman reporters, and bioconjugation protocols have led to the development of ultra-bright SERS tags for multiplexed detection and diagnosis.

Purpose of the Study:

• To review the factors influencing SERS tag quality and strategies for improvement.
• To explore the integration of SERS with microfluidic technologies for biomedical applications.
• To discuss challenges and solutions for translating SERS platforms into clinical practice.

Main Methods:

• Review of current literature on SERS tag development and optimization.
• Analysis of strategies to enhance spectral quality, specificity, and reproducibility.
• Exploration of microfluidic approaches for SERS-based biomedical assays.

Main Results:

• Factors influencing SERS tag quality and methods for improvement are detailed.
• Strategies for enhancing analyte-ligand interaction specificity and reproducibility are presented.
• Emerging approaches for coupling SERS with microfluidics for biomedical applications are discussed.

Conclusions:

• Optimizing SERS tag quality is crucial for reliable biomedical diagnostics.
• Integrating SERS with microfluidics holds significant promise for high-throughput clinical applications.
• Addressing current challenges is essential to fully realize the potential of SERS-based microfluidic platforms.