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Aerogel-Lined Capillaries as Liquid-Core Waveguides for Raman Signal Gain of Aqueous Samples: Advanced Manufacturing
Felix Spiske1, Lara Sophie Jakob2, Maximilian Lippold2
1Institute of Thermal, Environmental and Resources' Process Engineering (ITUN), Technische Universität Bergakademie Freiberg (TUBAF), 09599 Freiberg, Germany.
Sensors (Basel, Switzerland)
|September 28, 2024
Summary
A new method improves aerogel-lined capillary manufacturing for enhanced Raman spectroscopy. This advanced process allows longer capillaries, adjustable thickness, and crack-free linings, boosting signal gain from aqueous samples.
Area of Science:
- Materials Science
- Analytical Chemistry
- Spectroscopy
Background:
- Aerogel-lined capillaries are used as liquid-core waveguides for Raman signal acquisition.
- Previous spin-coating methods had limitations in capillary length, thickness control, and reproducibility.
Purpose of the Study:
- To present an advanced manufacturing process for aerogel-lined capillaries.
- To enable the fabrication of longer, crack-free aerogel linings with controlled thickness.
- To optimize aerogel-lined capillaries for enhanced Raman signal gain from aqueous samples.
Main Methods:
- Development of an advanced manufacturing process for aerogel-lined capillaries.
- Adjustment of lining thickness via controlled lining velocity.
- Characterization of aerogel lining thickness and topography using scanning electron microscopy.
Main Results:
- Successful fabrication of longer aerogel-lined capillaries.
- Reproducible generation of crack-free aerogel linings.
- Demonstrated correlation between lining parameters, thickness, topography, and Raman signal gain.
Conclusions:
- The advanced manufacturing process significantly improves aerogel-lined capillary fabrication.
- Optimized aerogel linings enhance Raman signal acquisition from aqueous samples.
- This method provides a robust platform for developing advanced liquid-core waveguides.
