Surfaces and Coatings of Fibers

Fibers are often tailored for their respective product using coatings. For example, absorbency or hydrophobicity can be built into fabrics using coated fibers. The surface roughness of individual fibers needs to be quantified for coating application. Optical profilometry and atomic force microscopy are ideal techniques for quantifying the roughness of surfaces.

Zeta-20 3D true color image of high gloss paperZeta-20 true color 3D optical profiler image of high gloss paper.


Zeta3D image of  nylon thread in true colorZeta-20 infinite depth of field optical profiler image of nylon thread.


The results of the coating process must be measured to determine its efficacy. We offer an array of instrumentation that can be used to investigate the surface roughness of uncoated and coated fibers to quantify the quality of the coatings.

Mask Fibers AFM

 AFM image of face mask fiber

In the paper industry, texture, tensile strength, surface roughness and fiber dimensions as well as thickness of ink layers and glossy coatings all must be considered when manufacturing paper. The Zeta-20 optical profiler quickly images and measures surfaces, including those with extreme differences in reflectance.


Zeta-20 optical profiler paper surface roughness comparison

 As paper quality increases from regular to high gloss, the surface roughness decreases, shown here using root mean square values


Using the optional 3D Roughness Reconstruction software, surface profiles and relative roughness measurements can be acquired with the Phenom desktop SEM.

3D nylon strands

3D Reconstruction of nylon threads using Phenom desktop SEM


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Phenomenal SEM for most applications

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3D Optical Profiler on your benchtop

SEM 3D Reconstruction
SEM 3D Reconstruction

Create three-dimensional SEM images and measure submicrometer roughness