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Related Experiment Video

Updated: Jul 30, 2025

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons

Published on: July 21, 2018

SPECTRA: A Novel Compact System for Surface Plasmon Resonance Measurements.

Elisabetta Pasqualotto¹, Erica Cretaio^1,2, Lara Franchin²

¹ARC-Centro Ricerche Applicate s.r.l., 35132 Padova, Italy.

Sensors (Basel, Switzerland)

|May 13, 2023

Summary

This summary is machine-generated.

A novel, compact Surface Plasmon Resonance (SPR) device, SPECTRA, offers a cost-effective solution for sensitive optical detection. This spectrophotometer add-on simplifies complex instrumentation for point-of-care applications.

Keywords:

SPECTRA compact system gratings optical sensing surface plasmon resonance

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Area of Science:

Optics and Photonics
Biomedical Engineering
Analytical Chemistry

Background:

Surface Plasmon Resonance (SPR) is a powerful optical detection technique known for its speed and sensitivity.
Traditional SPR instruments are often bulky, expensive, and impractical for widespread use, especially in point-of-care settings.

Purpose of the Study:

To introduce SPECTRA, a novel, compact, and cost-effective SPR device designed as a spectrophotometer add-on.
To demonstrate a simplified grating-coupled SPR configuration suitable for market adoption and reduced instrumentation complexity.

Main Methods:

Developed a compact SPR device (SPECTRA) with a grating coupling configuration.
Designed adaptable vertical and horizontal configurations for diverse SPR applications.
Evaluated performance using functionalization molecule detection on gratings and fluid-dynamic measurements with varying refractive indices.

Main Results:

The vertical SPECTRA configuration successfully detected functionalization molecules on gold gratings.
The horizontal SPECTRA configuration accurately performed fluid-dynamic measurements with glycerol solutions.
Experimental tests confirmed SPECTRA's suitability for SPR measurements in static and dynamic scenarios.

Conclusions:

The SPECTRA device provides a viable and marketable solution for rapid SPR measurements.
Its compact design and grating configuration overcome the limitations of complex, expensive traditional SPR systems.
SPECTRA demonstrates versatility for detecting analytes and surface property changes in various applications.