Single particle tracking PALM (sptPALM) was first used to achieve high-density diffusion maps of membrane proteins (Manley et al., 2008).
We speculate that this difference may be related to the affinity of trans-membrane helices to the unique ladderane membranes of anammox bacteria that have an exceptionally high density to prevent diffusion [ 60].
However, in the real world, the spatial factor is very important, for example, diffusion of intra species from high density to low one, and cross-diffusion of inter species for chase or the presence of other species.
These findings show the breakdown of the Si network structure by high density H radicals and the diffusion of more N atoms into the deeper region of the films.
These results indicate that a low density of haptens reduces labeling of targets, while a high density of haptens can alter diffusion, potentially due to cross-linking or clustering receptors.
The region with perfect twin structure (Σ3 boundaries) has a high MCDL, while the regions with either high-angle grain boundaries (Σ9 and Σ27 boundaries) or sub-grain boundaries (high density dislocation) exhibit lower minority carrier diffusion.
Because of the high density of fixed charges, they vigorously restrict diffusion [ 48, 49].
EHTs are a formidable display of tissue-level contractile function and cellular-level differentiation, although they suffer greatly from mass transport limitations due to the high density of metabolically active cells and the diffusion-limited nature of the hydrogel.
The relatively high density together with the absence of a solvent results in the diffusion being limited and slow.
The microfabricated porous barrier retains the cells in high density 3-D aggregates while maximizing nutrient and gas transport via diffusion through 2 um pores.
In particular, discovery of internal diffusion barrier provides a novel attractive scenario of super high density operation.
