Colorimetric Analysis of Transmitted Light Through Plasmonic Paper for Next-Generation Point-of-Care (PoC) Devices.

Area of Science:

• Plasmonics
• Nanotechnology
• Colorimetry
• Optical Sensing

Background:

• Colorimetric sensing relies on accurate light-matter interactions.
• Plasmonic paper offers unique optical filtering properties.
• Optimizing device components is crucial for sensing performance.

Purpose of the Study:

• To determine optimal conditions for the Color Picker System using plasmonic paper.
• To enhance the sensitivity and precision of colorimetric sensing.
• To investigate the influence of light sources on plasmonic paper performance.

Main Methods:

• Simulation study analyzing transmittance spectra of plasmonic paper in various mixtures.
• Colorimetric analysis evaluating filtering properties with different light source spectra.
• Development of a comprehensive color chart correlating chromatic response and RGB values.

Main Results:

• Optimal device configuration involves nanoparticle arrays with high absorbance and Cold LED light sources.
• White LED light uniquely generated strong red signals and green channel variations.
• Cold LED and Xenon Arc lamps produced the strongest colorimetric signals in the blue channel.

Conclusions:

• A deep understanding of plasmonic paper filtering properties was achieved.
• Optimizing the correlation between filtering properties and light sources enhances sensing.
• This research paves the way for implementing nanoparticle arrays in advanced colorimetric sensing.