Stereometric characterization of <i>Dinizia excelsa</i> Ducke wood from Amazon rainforest using atomic force microscopy

Conceição, Willian Silva da; Ţălu, Ștefan; Matos, Robert Saraiva; Ramos, Glenda Quaresma; Zayas, Fidel Guerrero; Filho, Henrique Duarte da Fonseca

doi:10.1002/jemt.23699

Cited by 10 publications

(6 citation statements)

References 38 publications

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“…e PSD is a very useful tool for differentiating surfaces on a micro-or manometric scale and that has been extensively used in the analysis of different films [23,31,32,58]. Based on the PSD, we observed that high sintering temperatures form LuMnO 3 surfaces with lower spatial frequencies.…”

Section: Fractal Characterizationmentioning

confidence: 93%

Investigation of Stereometric and Fractal Patterns of Spin-Coated LuMnO3 Thin Films

Marques

Matos

Romaguera-Barcelay

et al. 2021

Advances in Materials Science and Engineering

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In this paper, we have performed qualitative and quantitative analysis of LuMnO3 thin films surfaces, deposited by spin coating over Pt(111)/TiO2/SiO2/Si substrates, to evaluate their spatial patterns as a function of the film’s sintering temperature. Atomic force microscopy was employed to obtain topographic maps that were extensively analyzed via image processing techniques and mathematical tools. 3D (three-dimensional) topographical images revealed that films sintered at 650°C and 750°C presented the formation of smoother surfaces, while the film sintered at 850°C displayed a rougher surface with a root mean square roughness of ∼2.5 nm. On the other direction, the height distribution of the surface for all films has similar asymmetries and shape, although the film sintered using the highest temperature showed the lower density of rough peaks and a sharper peak shape. The advanced fractal parameters revealed that the film sintered at 850°C is dominated by low spatial frequencies, showing less spatial complexity, higher microtexture homogeneity, and uniform height distribution. These results suggest that the combination of stereometric and fractal parameters can be especially useful for identification of unique topographic spatial patterns in LuMnO3 thin films, helping in their implementation in technological applications, such as photovoltaic solar cells and information magnetic date storage and spintronic devices.

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Section: Fractal Characterizationmentioning

confidence: 93%

Investigation of Stereometric and Fractal Patterns of Spin-Coated LuMnO3 Thin Films

Marques

Matos

Romaguera-Barcelay

et al. 2021

Advances in Materials Science and Engineering

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“…AFM is known for being a very sensitive morphological analysis technique that can evaluate subtle details in the spatial patterns of surfaces at the nanoscale [ 32 , 43 , 44 , 45 , 46 , 47 ]. In Figure 4 , we report top-view and 3D rendering of representative AFM images obtained on a single PCL fiber without and with nanoparticles, respectively, at relatively large scope (2 × 2 µm 2 ) that allows one to see a full transversal profile of the imaged fiber.…”

Section: Resultsmentioning

confidence: 99%

“…In this work, we applied scanning electron microscopy (SEM) and atomic force microscopy (AFM) to characterize the PCL fibers and incorporation of βCP–NP in those fibers. From the AFM topographic images, several stereometric parameters can be obtained through advanced analysis, which have been used recently to characterize chemical and biological surfaces, such as biofilms [ 28 , 29 ], leaves [ 30 ], teeth [ 31 ], and wood [ 32 ]. These parameters can provide important information on the physical and functional properties of the surface, such as flatness, texture symmetry, roughness, shape of rough peaks, texture direction, and density.…”

Section: Introductionmentioning

confidence: 99%

Molecularly Imprinted Membrane Produced by Electrospinning for β-Caryophyllene Extraction

et al. 2022

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Molecularly imprinted membrane of β-caryophyllene (MIM–βCP) was fabricated incorporating β-caryophyllene molecularly imprinted polymer nanoparticles (βCP–NP) into polycaprolactone (PCL) fibers via electrospinning. The βCP–NP were synthesized by precipitation polymerization using the βCP as a template molecule and acrylic acid as a functional monomer in the proportion of 1:4 mol, respectively. Atomic force microscopy images and X-ray diffraction confirmed the nanoparticles’ incorporation into MIM–βCP. MIM–βCP functionalization was evaluated by gas chromatography. The binding capacity was 1.80 ± 0.05 μmol/cm2, and the selectivity test was performed with a mixing solution of βCP and caryophyllene oxide, as an analog compound, that extracted 77% of the βCP in 5 min. The electrospun MIM–βCP can be used to detect and extract the βCP, applications in the molecular sieve, and biosensor production and may also contribute as an initial methodology to enhance versatile applications in the future, such as in the treatment of skin diseases, filters for extraction, and detection of βCP to prevent counterfeiting of commercial products, and smart clothing with insect-repellent properties.

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“…Atomic force microscopy (AFM) is a very sensitive technique to detect changes in the spatial patterns of surfaces at nanoscale (Conceição et al, 2021). Several researchers have applied fractal theory to investigate surface morphology using 3D AFM maps (Bitler et al, 2012; de Oliveira et al, 2020; Fattahi et al, 2020; Gao & Qiang, 2017; Ţălu et al, 2020; Yadav et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Nanoscale surface dynamics of spatial patterns of polymeric bilayered particles loaded with essential oil

Matos

Costa

Yasumura

et al. 2022

Microscopy Res & Technique

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Gelatin/PCL bilayered particles loaded with Piper nigrum essential oil was synthesized aiming to access their morphological and surface dynamic patterns. Atomic force microscopy (AFM) was applied to investigate the 3D morphology and multifractal aspects of the particles surface. The AFM maps revealed spherical surfaces and well dispersed particles, besides a rougher surface on the loaded system. Minkowski functionals showed that shape of the rough peaks was similar in the unloaded and loaded systems; however, the presence of deep valleys on the loaded particles revealed their rougher pattern. Multifractal analysis revealed that unloaded and loaded particles presented multifractal behavior with different surface dynamics. The loaded surface presented a greater width of the multifractal spectrum and smaller difference of fractal dimensions, confirming their more vertically growing. These results can be useful in the development of novel polymeric‐based particles loaded with essential oil. Their unique surface dynamics can provide enhanced physical properties and performance in emerging biotechnological applications.

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Stereometric characterization of Dinizia excelsa Ducke wood from Amazon rainforest using atomic force microscopy

Cited by 10 publications

References 38 publications

Investigation of Stereometric and Fractal Patterns of Spin-Coated LuMnO3 Thin Films

Investigation of Stereometric and Fractal Patterns of Spin-Coated LuMnO3 Thin Films

Molecularly Imprinted Membrane Produced by Electrospinning for β-Caryophyllene Extraction

Nanoscale surface dynamics of spatial patterns of polymeric bilayered particles loaded with essential oil

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