3D micro-structuring by CW direct laser writing on PbO-Bi2O3-Ga2O3 glass

Smolík, J.; Knotek, Petr; Schwarz, Jiří; Černošková, E.; Janíček, Petr; Melánová, Klára; Zárybnická, Lucie; Pouzar, Miloslav; Kutálek, Petr; Staněk, J.; Edlman, J.; Tichý, L.

doi:10.1016/j.apsusc.2022.152993

Cited by 10 publications

(3 citation statements)

References 61 publications

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“…Whereas, larger micro-dots diameter of 320.245 µm and deeper micro-dots height of 92.973 µm were obtained when the laser power was 8 W. This is because as the laser power is increased, the intensity of laser beam also increases, which leads to an increase in temperature and reduce the viscosity of the surface of the polymer [45]. This causes the material to vaporize and be ejected from the surface, creating a large and deep formation of micro-dots [46]. This shows that the desired size; diameter and height of the micro-dots can be controlled using different range of laser powers.…”

Section: Effect Of Laser Power To the Formation Of Micro-dotsmentioning

confidence: 99%

Fabrication of Polymer Light Guide Plate (LGP) using Direct CO2 Laser Structuring

Norfazilasari Yasman,

Raja Murfiqah Raja Mohamad Fouzy,

Mohd Zairulnizam Mohd Zawawi

2024

ARAM

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Light guide plates (LGPs) are an integral component that help distribute illumination from the light source in a variety of applications. Therefore, the design and quality of the microstructure pattern in LGPs play a significant role in achieving high luminous efficiency and light uniformity. This study investigates the relationship between laser power and laser scanning speed to the formation of micro-dots by using CO2 direct laser structuring on PMMA. Furthermore, the effect of different micro-dots pitch to the luminance was also evaluated using the luminance meter. Our finding shows that increase of laser power and decrease of laser scanning speed resulted in larger micro-dots diameter and deeper micro-dots. The results also showed that the smaller the pitch, the higher the luminance reading. Overall, the low-cost CO2 direct laser structuring demonstrated in the study able to produce consistent micro-dots pattern diameter and height which is suitable for fabrication of LGPs in the mass production.

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Section: Effect Of Laser Power To the Formation Of Micro-dotsmentioning

confidence: 99%

Fabrication of Polymer Light Guide Plate (LGP) using Direct CO2 Laser Structuring

Norfazilasari Yasman,

Raja Murfiqah Raja Mohamad Fouzy,

Mohd Zairulnizam Mohd Zawawi

2024

ARAM

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“…The film sample with a mixture of MgO and ZnO showed a different behavior of partially agglomerated spherical particles (probably ZnO) in the middle of the so-called snowflake with a lamellar character of the tails (MgO lamellae), see Figure 4 h. The surface of the sample with La 2 O 3 nanoparticles was rough compared to the other samples and therefore the particles are not clearly visible (see Figure 4i) but using mechanical behavior in the log module showed that La 2 O 3 nanoparticles were welldispersed particles with an average size of 100 nm (see arrows in Figure 4j). Further, AFM images in three-dimensional (3D) form and root mean square (RMS) parameters (see Figure S6 and Table S3, respectively) were used for sample roughness evaluation [108,109]. showed a different behavior of partially agglomerated spherical particles (probably ZnO) in the middle of the so-called snowflake with a lamellar character of the tails (MgO lamellae), see Figure 4 h. The surface of the sample with La2O3 nanoparticles was rough compared to the other samples and therefore the particles are not clearly visible (see Figure 4i) but using mechanical behavior in the log module showed that La2O3 nanoparticles were well-dispersed particles with an average size of 100 nm (see arrows in Figure 4j).…”

Section: Embedded Nanoparticles: Characterization Real Content and Lo...mentioning

confidence: 99%

“…showed a different behavior of partially agglomerated spherical particles (probably ZnO) in the middle of the so-called snowflake with a lamellar character of the tails (MgO lamellae), see Figure 4 h. The surface of the sample with La2O3 nanoparticles was rough compared to the other samples and therefore the particles are not clearly visible (see Figure 4i) but using mechanical behavior in the log module showed that La2O3 nanoparticles were well-dispersed particles with an average size of 100 nm (see arrows in Figure 4j). Further, AFM images in three-dimensional (3D) form and root mean square (RMS) parameters (see Figure S6 and Table S3, respectively) were used for sample roughness evaluation [108,109]. The morphology and distribution of MeO nanoparticles inside the dried latex films were investigated by SEM.…”

Section: Embedded Nanoparticles: Characterization Real Content and Lo...mentioning

confidence: 99%

Influence of Metal Oxide Nanoparticles as Antimicrobial Additives Embedded in Waterborne Coating Binders Based on Self-Crosslinking Acrylic Latex

et al. 2022

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This article deals with the simple preparation of environmentally friendly acrylic latex binders, which are functionalized with nanoparticles of metal oxides, namely MgO, ZnO, La2O3 and combinations of MgO and ZnO, serving as functional components to achieve antimicrobial properties, but also to improve physical–mechanical properties and chemical resilience. The incorporation of uncoated powder nanoparticles was performed during the synthesis, using the two-stage semi-continuous emulsion radical polymerization technique, to obtain latexes containing 0.5–1.3% nanoparticles relative to the polymer content. Changes in latex performance due to nanoparticles were compared from the point of view of the type and concentration of metal oxide nanoparticles in latex. The results of the tests showed that all types of nanoparticles showed very promising properties, while with increasing concentration of nanoparticles there was an improvement in properties. The nanoparticles in latex provided interfacially crosslinked transparent smooth coating films with high gloss and good physical–mechanical properties. Latexes containing the highest concentration of nanoparticles provided coatings with significant antimicrobial activity against all tested bacterial and fungal strains, but also in-can preservative stability of liquid latex. Furthermore, the coatings were resistant to solvents, and in addition, latexes with MgO nanoparticles showed a significant decrease in the minimum film-forming temperature, and latex with a concentration of about 1.3% MgO did not show any flash corrosion under the coating film cast on a steel substrate. The latexes containing MgO and La2O3 nanoparticles provided coatings that were very resistant to water bleaching.

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Defects‐Induced Photochromism and Luminescent Modulation Based on Lanthanides‐Doped Cadmium Glass Toward Optical Storage Applications

Zhu,

Huang,

Zhao

et al. 2024

Laser & Photonics Reviews

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Owing to the large storage capacity, the transparent luminescent glass with photo‐induced coloration properties has attracted considerable interest in recent years. However, lots of the photochromic (PC) mechanisms for glass are related to the ionic valence transformation, and the study associated with the defects‐induced photochromism of glass is limited. Herein, a kind of Sm3+ doped PC cadmium glass is fabricated, for which the PC mechanism is systematically investigated by various techniques, such as XPS spectra, thermoluminescence spectra, EPR spectra, etc. The results show that the mechanism of coloration for such glass should be due to the presence of oxygen vacancy‐related electron centers. Under 365 nm light irradiation, the color of the glass turns from colorless to brown, exhibiting a large color contrast, of 62%. Utilizing the re‐absorption process between absorption spectra and emission/excitation spectra, the emission intensity of Sm3+ is reversibly regulated, indicating their promising applications as an optical storage medium.

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3D micro-structuring by CW direct laser writing on PbO-Bi2O3-Ga2O3 glass

Cited by 10 publications

References 61 publications

Fabrication of Polymer Light Guide Plate (LGP) using Direct CO2 Laser Structuring

Fabrication of Polymer Light Guide Plate (LGP) using Direct CO2 Laser Structuring

Influence of Metal Oxide Nanoparticles as Antimicrobial Additives Embedded in Waterborne Coating Binders Based on Self-Crosslinking Acrylic Latex

Defects‐Induced Photochromism and Luminescent Modulation Based on Lanthanides‐Doped Cadmium Glass Toward Optical Storage Applications

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