Synthesis of hybrid nanofluid with two-step method Wayan Nata Septiadi, Ida Ayu Nyoman Titin Trisnadewi, Nandy Putra and Iwan Setyawan E3S Web Conf., 67 (2018) 03057 Published online: 26 November 2018 DOI: 10.1051/e3sconf/20186703057