The high performance of fuel cells requires a large diffusion coefficient, i.e. the diffusivity, of the gas transport in electrodes and efficient gas diffusion can lead to large limiting currents and controlled concentration polarization.
For the nanocrystalline Co P UBM, Co diffuses quickly toward the solder and Sn does not diffuse into the UBM, whereas for the amorphous Co P film not only does Co diffuse into the solder, but also Sn diffuses into the Co P film with a large diffusion rate.
The long retention of our device could be attributed to the large diffusion barriers (1.55 eV, Fig. 1f) of the mobile ions.
The low value of probe diffusion coefficient indicates that the molecular collagen contributes to large diffusion hindrance of the medium.
That has been advanced due to the large diffusion of the personal computer and the numerical algorithms.
However, also in countries characterized by a large diffusion of industrial clusters, such as Italy, there are no operating EIPs.
A large diffusion zone was revealed in the near-surface layer of that alloy.
The large diffusion of smartphones equipped with new built-in sensors has stimulated researchers to develop applications in different fields.
Moreover, in the last few years, the utilization of hematopoietic growth factors and peripheral stem cells has permitted a large diffusion of this approach.
The required volume, 3350 m3, is competitive with conventional reactors, while eliminating disadvantages of existing reactor types such as catalyst attrition and separation, backmixing and large diffusion distances.
Despite the large diffusion of the technology, the use of RFID tracking has remained scarce in the construction industry despite the intense research.
