Figure 2
From: A Novel Equivalent Agglomeration Model for Heat Conduction Enhancement in Nanofluids

TEM of nanofluids and the schematic cross section of model.
(a) The TEM of nanofluids. (i) is the TEM for /water25, we estimate agglomeration ratio
; (ii) is CuO/water25, we estimate the agglomeration ratio
; (iii) is Cu/ethylene glycol39 without agglomeration. (b) The schematic cross section of multilevel equivalent agglomeration model.