While both the width increase and the height increase were accountable for the increase in the fiber cross-sectional area, the increase in fiber height was more dramatic.
The length of each segment was measured, along with the overall fiber height and diameter as designated in (A) by the yellow dashed lines (B).
After the growth of the template by depositing p-6P for 10 min (∼33 nm fiber height) the sample is automatically transferred in HV conditions periodically between the 6T and p-6P source oven.
Using this method a large-area of vertically-aligned carbon nanofibers (VACNFs) with different interfiber-distance-to-fiber-height ratios and fiber aspect ratios were synthesised.
We find that the field emission performance of VACNF arrays is optimized when the interfiber-distance-to-fiber-height ratio is equal to 1, in line with some experimental findings but different from some predictions.
A few design factors were examined such as the shell configurations, inlet geometries, fiber bed height and packing density.
In composite fibers and pure silk fibers, however, variations in fiber width, height, and cross-sectional area were less significant within the same time frame, and the fibers retained well-aligned and straight fiber morphology with only slight variations.
As exemplified by the cross-section (1), these fibers reach height levels up to ∼200 nm and are characterized by similar dimensions in width.
Transverse and longitudinal slip lengths have been explored with characteristic parameters such as flow channel height, fiber fractions, porous architectures and permeability.
