Achieving Transparency and Minimizing Losses of Rough Additively Manufactured Optical Components by a Dip-Coating Surface Finish DOI Open Access
Abhijeet Shrotri, Sascha Preu, Oliver Stübbe

et al.

Coatings, Journal Year: 2025, Volume and Issue: 15(2), P. 210 - 210

Published: Feb. 10, 2025

Additive manufacturing of optical, electrical, and mechanical components is a beneficial approach for the rapid prototyping error elimination, with short turnaround times. However, additively manufactured usually have rough surfaces that need post-processing, particularly optical components, where surface roughness must be small fraction wavelength. We demonstrate an innovative economical by dip-coating same resin used printing in simple post-processing step, providing high transparency to 3D-printed reducing while achieving perfect index matching coating layer. The drops 5 nm (arithmetic average) after process. observed significant performance enhancements comparing unprocessed dip-coated including shiny finish previously surfaces.

Language: Английский

Role of silicate-rich and silicate-less industrial solid wastes in the physicomechanical properties and durability of low quality metakaolin-blended cement DOI
Mohammed Seddik Meddah, Hamdy A. Abdel‐Gawwad,

Ola Najjar

et al.

Environmental Science and Pollution Research, Journal Year: 2024, Volume and Issue: 31(22), P. 32168 - 32182

Published: April 22, 2024

Language: Английский

Citations

4

Simulation Study of Low-Dose 4D-STEM Phase Contrast Techniques at the Nanoscale in SEM DOI Creative Commons

Zvonimír Jílek,

Tomáš Radlička, Vladislav Krzyžánek

et al.

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(1), P. 70 - 70

Published: Jan. 4, 2025

Phase contrast imaging is well-suited for studying weakly scattering samples. Its strength lies in its ability to measure how the phase of electron beam affected by sample, even when other techniques yield low contrast. In this study, we explore via simulations two techniques: integrated center mass (iCOM) and ptychography, specifically using extended ptychographical iterative engine (ePIE). We simulate four-dimensional scanning transmission microscopy (4D-STEM) datasets specific parameters corresponding a microscope (SEM) with an immersive objective given pixelated detector. The performance these analyzed transfer function. Simulated from sample consisting graphene sheets carbon nanotubes are used iCOM ePIE reconstructions aperture sizes doses. highlight influence size, showing that smaller aperture, radiation dose spent mostly on larger features, which may aid sensitive samples while minimizing damage.

Language: Английский

Citations

0

Digital Image Correlation and Numerical Analysis of Mechanical Behavior in Photopolymer Resin Lattice Structures DOI Open Access
Arkadiusz Popławski, Paweł Bogusz,

Maciej Grudnik

et al.

Materials, Journal Year: 2025, Volume and Issue: 18(2), P. 384 - 384

Published: Jan. 16, 2025

Cellular structures are increasingly utilized in modern engineering due to their exceptional mechanical and physical properties. In this study, the deformation failure mechanisms of two energy-efficient lattice structures—hexagonal honeycomb re-entrant honeycomb—were investigated. These were manufactured using additive stereolithography with light-curable Durable Resin V2. The experimental testing topologies under perpendicular loading directions employed 3D Digital Image Correlation (DIC) system capture strain fields patterns, providing insights into structural behavior mechanisms. unit cells scaled up enable precise optical measurements while preserving interaction characteristics. Numerical simulations, conducted SAMP-1 material model LS-DYNA calibrated tensile compression test data, accurately replicated studied demonstrated good agreement results. hexagonal structure, loaded along axis 2, showed best fit, deviations within 5%, structure exhibited weaker yet reasonable agreement. By integrating numerical approaches, research validates model’s predictive capabilities for provides a framework analyzing energy-absorbing topologies.

Language: Английский

Citations

0

Research on the Aging Characteristics of Simulated Asphalt Within Pavement Structures in Natural Environments DOI Open Access
Xiang Ma,

Weiyi Diao,

Jiachen Xu

et al.

Materials, Journal Year: 2025, Volume and Issue: 18(2), P. 434 - 434

Published: Jan. 17, 2025

The global asphalt production growth rate exceeded 10% in the past decade, and over 90% of world’s road surfaces are generated from materials. Therefore, issue aging has been widely researched. In this study, thin films under various natural conditions was studied to prevent distortion indoor simulated extraction samples impacting aged asphalt. styrene–butadiene–styrene (SBS)-modified at four different locations on an surface. characteristics binders across structural layers were revealed using Fourier transform infrared spectroscopy (FTIR), atomic force microscopy (AFM), linear amplitude scanning (LAS). results indicate that behavior functional group surface differs other conditions; fatigue life 4 months equates 16-month within dense-graded After 8 aging, smoothness significantly compromised. Inside porous pavement, is more likely interact with water molecules than inside dense pavement cracks, variations roughness reduction also significant.

Language: Английский

Citations

0

Achieving Transparency and Minimizing Losses of Rough Additively Manufactured Optical Components by a Dip-Coating Surface Finish DOI Open Access
Abhijeet Shrotri, Sascha Preu, Oliver Stübbe

et al.

Coatings, Journal Year: 2025, Volume and Issue: 15(2), P. 210 - 210

Published: Feb. 10, 2025

Additive manufacturing of optical, electrical, and mechanical components is a beneficial approach for the rapid prototyping error elimination, with short turnaround times. However, additively manufactured usually have rough surfaces that need post-processing, particularly optical components, where surface roughness must be small fraction wavelength. We demonstrate an innovative economical by dip-coating same resin used printing in simple post-processing step, providing high transparency to 3D-printed reducing while achieving perfect index matching coating layer. The drops 5 nm (arithmetic average) after process. observed significant performance enhancements comparing unprocessed dip-coated including shiny finish previously surfaces.

Language: Английский

Citations

0