While the mechanism is still unclear, hydrophilicity, surface functionality, roughness, surface area, and nanotopographical features such as ripples were proposed to be the reasons for such enhanced adhesion.
It also well explains that the 20-nm-diameter nanotubes that exhibit relatively unclear nanotubular surface show smaller geometric roughness and poorer hydrophilicity than other ones.
Among these samples, the 20-nm-diameter nanotubes show relatively unclear nanotubular surface, as shown in the enlarged area taken from Fig. 1b.
However, it is still unclear whether surface topography can be translated into a clinically functional response in vivo at the tissue/device interface.
Although the precise mechanism of oligonucleotide uptake is unclear, cell surface receptors have been proposed to perform this function [ 58, 60].
Analysis would uncover philosophically troublesome logical fictions in sentences whose logical forms are unclear on the surface, and it would ultimately reveal the nature of the reality to which language is connected.
The continuity of the two fault zones is, therefore, unclear at the surface.
Yet, it remains unclear how these surface changes affect the behaviour of embedded cells when the tissue is mechanically loaded.
However, it is unclear how well surface water fluxes represent total fluxes, or whether more diffuse subterranean fluxes of river water to the coastal ocean occur.
The H C method is useful, especially for the normal dip-slip aftershocks with unclear evidence of surface traces of faults; moreover, it supports also assumed orientation of strike-slip fault planes.
