Fish Gelatin-based Films for Gas Sensing

Inês Pimentel Moreira, Laura Sato, Cláudia Alves, Susana Palma, Ana Cecília Roque

2021

Abstract

Electronic noses (e-noses) mimic the complex biological olfactory system, usually including an array of gas sensors to act as the olfactory receptors and a trained computer with signal-processing and pattern recognition tools as the brain. In this work, a new stimuli-responsive material is shown, consisting of self-assembled droplets of liquid crystal and ionic liquid stabilised within a fish gelatin matrix. These materials change their opto/electrical properties upon contact with volatile organic compounds (VOCs). By using an in-house developed e-nose, these new gas-sensing films yield characteristic optical signals for VOCs from different chemical classes. A support vector machine classifier was implemented based on 12 features of the signals. The results show that the films are excellent identifying hydrocarbon VOCs (toluene, heptane and hexane) (95% accuracy) but lower performance was found to other VOCs, resulting in an overall 60.4% accuracy. Even though they are not reusable, these sustainable gas-sensing films are stable throughout time and reproducible, opening several opportunities for future optoelectronic devices and artificial olfaction systems.

Paper Citation

in Harvard Style

Moreira I., Sato L., Alves C., Palma S. and Roque A. (2021). Fish Gelatin-based Films for Gas Sensing. In Proceedings of the 14th International Joint Conference on Biomedical Engineering Systems and Technologies (BIOSTEC 2021) - Volume 1: BIODEVICES; ISBN 978-989-758-490-9, SciTePress, pages 32-39. DOI: 10.5220/0010206200002865

in Bibtex Style

@conference{biodevices21,
author={Inês Pimentel Moreira and Laura Sato and Cláudia Alves and Susana Palma and Ana Cecília Roque},
title={Fish Gelatin-based Films for Gas Sensing},
booktitle={Proceedings of the 14th International Joint Conference on Biomedical Engineering Systems and Technologies (BIOSTEC 2021) - Volume 1: BIODEVICES},
year={2021},
pages={32-39},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0010206200002865},
isbn={978-989-758-490-9},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 14th International Joint Conference on Biomedical Engineering Systems and Technologies (BIOSTEC 2021) - Volume 1: BIODEVICES
TI - Fish Gelatin-based Films for Gas Sensing
SN - 978-989-758-490-9
AU - Moreira I.
AU - Sato L.
AU - Alves C.
AU - Palma S.
AU - Roque A.
PY - 2021
SP - 32
EP - 39
DO - 10.5220/0010206200002865
PB - SciTePress