Nanofluid is a technical term. For example, a dispersed system of magnetite nanoparticles in kerosene is called a nanofluid. A dispersed system in kerosene is a heterogeneous system that consists of two phases of magnetite nanoparticles and kerosene . This system can be studied in chemical thermodynamics. The enthalpy and entropy of such a system cannot be theoretically and experimentally determined. You can only determine their change in some process. For example, we can determine their change if we study the process of compression of such a system from atmospheric pressure to 100 atm.
The entanglement of nanofluids is related to quantum mechanics.
A heterogeneous system of surfactant/water spherical micelles can be attributed to nanofluids. Such a system may have quantum entanglement. It is too long to explain this process on these pages. One must first understand the entanglement of two quanta, decoherence, quantum fluctuations, Schrödinger's cats...
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Preprint The Role of Zero-Point Energy of Water in Micelle Formation ...
Preprint Nuclear quantum effect in aqueous micellar surfactant solutions