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Surface Modification Enabling Reproducible Cantilever Functionalization for Industrial Gas Sensors
Daniel Mamou1, Lawrence Nsubuga1, Tatiana Lisboa Marcondes1,2
1NanoSYD Center, Mads Clausen Institute, University of Southern Denmark, 6400 Sønderborg, Denmark.
Sensors (Basel, Switzerland)
|September 28, 2021
Summary
This study enhances micro-cantilever sensors for detecting meat freshness biomarkers like cadaverine. Surface treatments improve binder uniformity, enabling precise expiration date determination for meat and fish.
Area of Science:
- Materials Science
- Chemical Sensing
- Biomarker Detection
Background:
- Micro-cantilever sensors are established for industrial gas sensing.
- Cadaverine is a volatile biomarker for meat and fish freshness.
- Surface properties critically affect sensor performance and binder morphology.
Purpose of the Study:
- To investigate the impact of surface treatments on cantilever sensor functionality.
- To optimize cadaverine detection for precise expiration date determination.
- To enhance reproducibility in industrial cantilever sensor applications.
Main Methods:
- Functionalization of cantilevers with a cyclam-derivative binder.
- Chemical and physical surface treatments to modify surface energy.
- Analysis of binder morphology, surface energy, and cadaverine capture efficiency.
- Development of a method to prevent binder crystallization.
Main Results:
- Surface treatments significantly influence binder morphology and clustering.
- Controlled surface properties lead to improved and reproducible cadaverine binding.
- A method was developed to hinder binder crystallization, enhancing target capture.
- Optimized functionalization ensures high reproducibility for industrial sensors.
Conclusions:
- Cantilever surface treatment is crucial for reproducible functionalization.
- Optimized binder morphology and uniformity enhance sensor performance.
- This approach promises reliable, precise expiration date determination for food products.
