Oligofluorene truxene laser sensor : towards bacteria growth detection

Johnston, Eilidh and Haughey, Anne-Marie and Scullion, Mark and Kanibolotsky, Alexander L. and Skabara, Peter J and Laurand, Nicolas; (2020) Oligofluorene truxene laser sensor : towards bacteria growth detection. In: 2019 IEEE 2nd British and Irish Conference on Optics and Photonics (BICOP). IEEE, GBR. ISBN 978-1-7281-4948-6 (https://doi.org/10.1109/BICOP48819.2019.9059576)

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Work toward the utilisation of an organic laser as a bacterial growth detector is presented here. The sensor used is an optically excited 2nd order DFB (distributed feedback laser) made of oligofluorene truxene. In the drive towards a practical bacterial growth detector, temperature stability and the optimum growth conditions of bacteria are challenges to be overcome. The resultant DFB laser exhibits a sensitivity of 9 nm/RIU.