Influence of Sonication on the Stability and Thermal Properties of Al₂O₃ Nanofluids

Figure 3

PSD’s determined using the Nanophox analyzer of Al₂O₃ particles in the nanofluids after three measurements at 15 min intervals, for NPs of sizes A ((a) and (b)) and B ((c) and (d)) prepared using the bath ((a) and (c)) and probe ((b) and (d)) sonicators. PDS just after sonication (□), after 15 min (○), and after 30 min (Δ).

(a)

(b)

(c)

(d)