Effect of hydrodynamic size on colloidal stability and lifetime of Mn-Zn magnetic fluids

Kaur, Navjot; Chudasama, Bhupendra

doi:10.1007/s00396-019-04570-x

Cited by 1 publication

(3 citation statements)

References 14 publications

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“…Another study on Mn-Zn ferrite based colloidal NMFs in transformer oil applications found that an increase in hydrodynamic size led to more aggregation due to stronger dipole-dipole interactions. [75] The thermal characteristics of magnetic nanosuspensions have been the subject of extensive research worldwide due to their numerous cooling applications, which have been at the forefront of research efforts. The cooling rates can be actively controlled to meet specific application requirements, making it capable of handling large and variable heat loads.…”

Section: Background and Literature Reviewmentioning

confidence: 99%

“…To overcome gravitational force, the size of the MNPs plays a key role due to the increased Brownian motion with the lowering of the size of the dispersed MNPs. [75,108,156] Therefore, an adequate balance between these attractive and repulsive forces is necessary to improve the stability of the NMFs. Table 3 presents the necessary and sufficient conditions for maintaining magnetic domain stability of nanoparticles in a carrier liquid, against various attractive and repulsive interactions, including magnetic and gravitational forces.…”

Section: Stability Of Nanomagnetic Fluidsmentioning

confidence: 99%

“…Another study on Mn‐Zn ferrite based colloidal NMFs in transformer oil applications found that an increase in hydrodynamic size led to more aggregation due to stronger dipole‐dipole interactions. [ 75 ]…”

Section: Background and Literature Reviewmentioning

confidence: 99%

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Correlating the Dipolar Interactions Induced Magneto‐Viscoelasticity and Thermal Conductivity Enhancements in Nanomagnetic Fluids

Singh

Pathak

Jain

et al. 2023

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The effective thermal management of electronic system holds the key to maximize their performance. The recent miniaturization trends require a cooling system with high heat flux capacity, localized cooling, and active control. Nanomagnetic fluids (NMFs) based cooling systems have the ability to meet the current demand of the cooling system for the miniaturized electronic system. However, the thermal characteristics of NMFs have a long way to go before the internal mechanisms are well understood. This review mainly focuses on the three aspects to establish a correlation between the thermal and rheological properties of the NMFs. First, the background, stability, and factors affecting the properties of the NMFs are discussed. Second, the ferrohydrodynamic equations are introduced for the NMFs to explain the rheological behavior and relaxation mechanism. Finally, different theoretical and experimental models are summarized that explain the thermal characteristics of the NMFs. Thermal characteristics of the NMFs are significantly affected by the morphology and composition of the magnetic nanoparticles (MNPs) in NMFs as well as the type of carrier liquids and surface functionalization that also influences the rheological properties. Thus, understanding the correlation between the thermal characteristics of the NMFs and rheological properties helps develop cooling systems with improved performance.

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Section: Background and Literature Reviewmentioning

confidence: 99%

Section: Stability Of Nanomagnetic Fluidsmentioning

confidence: 99%