02033nas a2200229   4500008004100000022001400041245007100055210006900126260000900195300001100204490000800215520131000223653002201533653003601555653001401591653001601605653002501621100002101646700002501667700001801692856009301710       2021                        eng d  a0167-732200aReview of the recent progress on thermal conductivity of nanofluid0 aReview of the recent progress on thermal conductivity of nanoflu  cSEP   a1169290 v3383 aThermal properties of nanofluids are very well investigated by the global research community for their various applications. The dispersion and stability of the nanoparticles in the base fluid are the essential requirements for the efficient utilization of nanofluids in many applications. The interfacial layer plays a crucial role in the dispersion, stability, and heat transfer properties of the nanofluid. The heat transfer property of the nanofluids is mainly influenced by the heat transfer properties at the particle-fluid interface. The thickness and thermal conductivity of the interfacial layer are the crucial factors that decide the heat transfer at the interface, and the difficulties in the determination of these factors limits the progress of the research. In this review article, the experimental studies on the thickness and thermal conductivity of the interfacial layer are reviewed briefly. The effect of interfacial the layer on the nanoscale mechanisms and thermophysical properties of nanofluids are reviewed. The effect of various tunable parameters on the heat transfer properties of the interfacial layer is also reviewed. This review will be beneficial for fine-tuning nanofluid's thermal properties and their commercial applications. (C) 2021 Elsevier B.V. All rights reserved.10aInterfacial layer10aInterfacial thermal conductance10aNanofluid10aSurfactants10aThermal conductivity1 aLenin, Ramanujam1 aJoy, Pattayil, Alias1 aBera, Chandan  uhttps://library.ncl.res.in/content/review-recent-progress-thermal-conductivity-nanofluid