The role of rough surfaces in quantitative ADF imaging of gallium nitride-based materials

Barnard, J. S.; Bennett, S. E.; Oliver, Rachel A.; Kappers, M. J.; Humphreys, C. J.

doi:10.1088/1742-6596/209/1/012019

Cited by 2 publications

(2 citation statements)

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“…). Ra is the arithmetic average of the absolute values and Rz is the average distance between the highest peak and lowest valley in each sampling length . As observed for the determination of roughness‐related parameters, in contrast to other brands, there were higher values of Ra for brand A (Fig.…”

Section: Resultsmentioning

confidence: 72%

“…In this sense, it is very difficult to predict shrinkage and warpage of processed materials using these distinct methods . Rq is commonly used to better describe the variance of the topographical profile of a surface . In addition to brand A, Rq also enabled the detection of statistically significant differences along the brand B tubes, which was not possible by analyzing Ra.…”

Section: Resultsmentioning

confidence: 99%

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Qualitative and quantitative topographical surface investigation and solvent effects on internal surface of polypropylene tubes

Barbosa

Silva

2011

Surface & Interface Analysis

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An alternative way for plastic tubes surface analysis was presented, and the time course of the effects of solvent exposure was evaluated. Atomic force microscopy was used to qualitatively and quantitatively analyze internal tubes topography. Differences in nanoroughness parameters were shown as potential markers for quality control check to detect differences among brands and areas along each tube. Mass spectrometry analysis was carried out to evaluate the effects of some solvents after the intrinsic contact with the polymer. The obtained spectra did not allow the visualization of any leaching component, suggesting a low rate of some possible reaction or dissociative interaction caused by polymer and tested solvent interactions that were in concordance with principal component analysis. The use of these techniques as tools for quality control evaluation, or search for new support to biomolecules immobilization can be seen as important innovations and can be applied in several other investigative and developmental approaches.

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Section: Resultsmentioning

confidence: 72%

Section: Resultsmentioning

confidence: 99%