@conference {Moreira2021,
	title = {Fish gelatin-based films for gas sensing},
	booktitle = {BIODEVICES 2021 - 14th International Conference on Biomedical Electronics and Devices; Part of the 14th International Joint Conference on Biomedical Engineering Systems and Technologies, BIOSTEC 2021},
	year = {2021},
	note = {<p>n/a</p>
},
	pages = {32{\textendash}39},
	publisher = {SciTePress},
	organization = {SciTePress},
	abstract = {<p>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.</p>
},
	keywords = {Electronic nose, Fish gelatin, Gas-sensing, Ionic liquid, Liquid crystal, Volatile organic compounds},
	isbn = {9789897584909},
	doi = {10.5220/0010206200320039},
	attachments = {https://sites.fct.unl.pt/sites/default/files/biomolecular_eng/files/102062.pdf},
	author = {Moreira, In{\^e}s Pimentel and Sato, Laura and Cl{\'a}udia Alves and Susana Palma and Roque, Ana Cec{\'\i}lia}
}
