Microarray analyzer based on wide field fluorescent microscopy with laser illumination and a device for speckle...

Area of Science:

• Biophotonics
• Analytical Chemistry
• Biotechnology

Background:

• Microarray technology is crucial for high-throughput biological analysis.
• Accurate fluorescence intensity measurement is essential for reliable microarray data.
• Existing analyzers may face limitations in dynamic range and speckle interference.

Purpose of the Study:

• To develop and characterize a novel microarray analyzer system.
• To achieve accurate fluorescence intensity measurements across a wide dynamic range.
• To enhance the utility of microarrays for high-throughput applications.

Main Methods:

• Development of a microarray analyzer incorporating lasers, filters, optics, and an image detector.
• Implementation of a novel speckle suppression device using a fiber-optic bundle and rotating mirror.
• Measurement of fluorescence intensity at three wavelengths (380-850 nm) with varying exposure times.
• Validation of measurement accuracy within ± 5%.

Main Results:

• The developed analyzer successfully obtains microarray images and measures fluorescence intensity.
• The speckle suppression device effectively minimizes laser speckle interference.
• Measurements demonstrated an accuracy of ± 5%.
• Utilizing multiple exposure times significantly expanded the measurable fluorescence intensity range.

Conclusions:

• The novel microarray analyzer provides accurate and reliable fluorescence intensity measurements.
• The system is suitable for high-throughput analysis of homogeneous microarrays.
• The enhanced dynamic range and speckle reduction improve data quality and analysis efficiency.