Based on that the nanofluid engineering parameters can be arranged by the decreasing importance for the heat transfer performance: particle concentration > base fluid > nanoparticle size > nanoparticle material ≈ surface charge > temperature ≈ particle shape > additives > Kapitza resistance.
The down-scaling effect results in an enhancement of the surface area of materials where surface charges play a dominant role in determining the magnitude and direction of polarization.
We found non-phagocytic uptake of ultrafine particles of all the different materials and surface charges by macrophages and erythrocytes.
Thus, this new process enables treatment of insulating materials because the surface charge induced by the ion impact is completely reduced by the inflow of electrons from the target plasma.
Adsorption of sulphate onto chalk surface leads to the desorption of negatively charged carboxylic material by changing the surface charge of the chalk surface (Strand et al. 2003).
There are many variables to consider when working with nanomaterial and these include type of material, their size, shape, surface, charge, coating, dispersion, agglomeration, aggregation, concentration and matrix.
Several studies investigating important material properties such as surface charge, concentration, shape, size, structural defects, and chemical functional groups relate to their safety profile and influence cyto- and geno-toxicology.
In this work, we demonstrate a new technique to investigate gas sensitivity of materials based on measuring surface charge variations induced by gas molecule adsorption.
These confirmed that surfactants could modify the surface charge of material.
We obtained a linear material response, in terms of surface charge variation, to varying H2 concentration from 0.5 to 4%%, which is in good agreement with the theory.
