High-performance ethanol gas sensor using TiO2 nanostructuresK. P. Priyanka, S. C. Vattappalam, S. Sankararaman, K. M. Balakrishna and Thomas VargheseEur. Phys. J. Plus, 132 7 (2017) 306DOI: https://doi.org/10.1140/epjp/i2017-11581-x