A surface plasmon resonance array biosensor based on spectroscopic imaging.

Area of Science:

• Biomedical Engineering
• Analytical Chemistry
• Biosensing Technology

Background:

• Conventional surface plasmon resonance (SPR) spectroscopy is limited in its ability to monitor multiple binding events simultaneously.
• Existing methods for analyzing binding events on patterned arrays can be complex and difficult to replicate.

Purpose of the Study:

• To develop a versatile and easily reproducible platform for monitoring simultaneous binding events on patterned receptor arrays.
• To integrate surface plasmon resonance (SPR) spectroscopy with one-dimensional SPR microscopy for enhanced biosensing capabilities.

Main Methods:

• Development of a multi-element transduction system combining SPR spectroscopy and 1D SPR microscopy.
• Utilizing macro- or micro-patterned receptor arrays on disposable sensor chips.
• Implementation of a simple method to compensate for bulk refractive index changes using sensor chip modifications.

Main Results:

• Demonstration of a platform capable of monitoring multiple, independent biospecific binding events concurrently.
• Successful integration of SPR spectroscopy and SPR microscopy for simultaneous analysis.
• Validation of a compensation method for refractive index fluctuations.

Conclusions:

• The developed system provides an effective platform for simultaneous monitoring of binding events on patterned arrays.
• The system's design using commercially available components facilitates duplication and widespread adoption.
• This technology offers a robust solution for analyzing complex biological interactions with high precision.