Advances in Plasmonic Sensing at the NIR-A Review

Area of Science:

• Optics and Photonics
• Nanotechnology
• Biomedical Engineering

Background:

• Surface plasmon resonance (SPR) and localized surface plasmon resonance (LSPR) are leading label-free biosensing methods.
• LSPR sensor performance relies heavily on nanomaterial properties (size, shape, composition).
• Tunable LSPR across UV-Vis-NIR spectra is achievable through nanomaterial engineering.

Purpose of the Study:

• To review the science behind LSPR biosensors.
• To highlight recent advancements in NIR LSPR biosensors.
• To discuss nanomaterial development for enhanced NIR sensing.

Main Methods:

• Review of LSPR phenomena and optical fiber integration.
• Analysis of nanomaterial characteristics for NIR sensing.
• Exploration of recent LSPR biosensor developments.

Main Results:

• Tailoring nanomaterials enables tunable LSPR across UV-Vis-NIR.
• Optical fiber integration with NIR LSPR offers ultra-sensitive, long-range sensing.
• Nanostructure engineering is key for optimizing LSPR biosensor performance.

Conclusions:

• NIR LSPR biosensors integrated with optical fibers show significant potential.
• Further research into nanostructure characteristics will advance LSPR sensing.
• LSPR technology is crucial for developing next-generation biological and chemical sensors.