“…There is little literature on the influence of ultrasound treatment conditions on the microstructure as well as thermal and rheological properties of INFs. Most of the research in the field was carried out under constant sonication settings [20] , [21] , [22] , [23] , [24] , [25] , [26] , [27] , [28] , [29] , [30] , [31] . The notable exceptions were works of Wittmar et al [32] , [33] , who investigated rheological properties of INFs containing 0.5 wt% 95% anatase TiO 2 with average particle size 5 nm or 100% anatase TiO 2 with average particle size from 5 to 26.4 nm and 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide [Emim][NTf 2 ], 1-ethyl-3-methylimidazolium tetrafluoroborate [Emim][BF 4 ], 1-butyl-3-methylimidazolium tetrafluoroborate [Bmim][BF 4 ], or 1-hexyl-3-methylimidazolium tetrafluoroborate [Hmim][BF 4 ], prepared with various sonication times up to 4 h. They concluded that the rheological behavior of nanodispersions was complex and depended on the type of IL.…”