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

Figure 5

TEM images of Al₂O₃ NPs prepared in DW without ((a) and (b)) and with ((c) and (d)) the bath sonicator and ((e) and (f)) probe sonicators, for NPs of sizes A ((a), (c), and (e)) and B ((b), (d), and (f)).

(a)

(b)

(c)

(d)

(e)

(f)