This is our latest selection of worldwide publications and patents in english on Optics, between many scientific online journals, classified and focused on optics, diffraction, optical resolution, polarisation, laser, Kapitsa–Dirac, optical instrument and photon.
Evaluation of Osteoblast-like Cell Proliferation and Osteogenic Response
Published on 2025-03-11 by Roberto Campagna, Valentina Schiavoni, Loredana Rao, Fabrizio Bambini, Andrea Frontini, Francesco Sampalmieri, Eleonora Salvolini, Lucia Mem� @MDPI
Abstract: Nowadays, custom-made subperiosteal implants are emerging as a solution in all those cases where there is lack of healthy bone tissue to support endosseous implants. The development of innovative techniques has allowed the production of grids that precisely match the patient’s anatomy. Elucidating the impact of laser-melted Ti6Al4V grids on both hard and soft tissues with which they come into contact is, therefore, mandatory. In this study, we analyzed the effects of five different[...]
Our summary: Evaluation of the impact of laser-melted Ti6Al4V grids on osteoblast-like cell proliferation and osteogenic response, analysis of five different surface treatments on MG-63 cell line, demonstration of enhanced osteogenesis with Al Ti color surface treatment.
osteoblast-like cell proliferation, osteogenic response, laser-melted Ti6Al4V grids, surface treatments
Publication
Effect of Partial Fibre Laser Processing on the Wear Resistance of NiCrMoFeCSiB Coatings
Published on 2025-03-11 by Olegas ?erna�?jus, Jelena �kamat, ?ukasz Gierz, Olga Zharkevich, Alexandra Berg @MDPI
Abstract: Surface laser processing of metallic materials is known to be effective in improving wear resistance due to microstructure refinement and the associated hardening effect. However, the formation of cracks, which frequently accompanies such processing, remains a challenge. This work focusses on partial laser processing of Ni-based protective coatings as a method that could potentially reduce the risk of crack formation due to lower overall heat input and retaining softer material portions that fac[...]
Our summary: Effect of Partial Fibre Laser Processing on Wear Resistance of NiCrMoFeCSiB Coatings. Laser processing of Ni-based coatings improves wear resistance by refining microstructure and hardening material. Partial laser treatment reduces crack formation risk and enhances wear resistance significantly.
laser processing, wear resistance, Ni-based coatings, crack formation
Publication
Design Guide for Hybrid-Additive Manufacturing of Inconel 718 Combining PBF-LB/M and In Situ High-Speed Milling
Published on 2025-03-10 by David Sommer, Simon Hornung, Cemal Esen, Ralf Hellmann @MDPI
Abstract: As the correlation between design rules and process limitations is of the upmost importance for the full exploitation of any manufacturing technology, we report a design guide for hybrid-additive manufacturing of Inconel 718. Basic limitations need to be evaluated for this particular hybrid approach that combines laser powder bed fusion (PBF-LB/M) and in situ high-speed milling. Fundamental geometric limitations are examined with regard to the minimum feasible wall thickness, cylinders, overhang[...]
Our summary: Design guide for hybrid-additive manufacturing of Inconel 718 combining PBF-LB/M and in situ high-speed milling, Examination of geometric limitations, Derivation of design guidelines for reliable build process
hybrid-additive manufacturing, Inconel 718, PBF-LB/M, high-speed milling
Publication
Thickness dependence of chemical ordering and fourfold exchange anisotropy in FeRh/CoFe bilayers
Published on 2025-03-10 by Jing Meng, Xiaoyan Zhu, Hui Zhang, Dongmei Jiang, Yang Xu, Wenjuan Cheng, Tian Shang and Qingfeng Zhan @IOP SCIENCE
Abstract: Fourfold exchange anisotropy has recently been discovered in bilayers consisting of a ferromagnetic (FM) layer exchange-coupling with an epitaxial antiferromagnetic (AF) layer. The chemical ordering of the AF layer plays an important role in the interfacial exchange coupling of AF/FM bilayers. Herein, we studied the thickness dependence of the chemical ordering and fourfold exchange anisotropy of FeRh/CoFe bilayers before and after the AF–FM phase transition of FeRh. The chemical ordering para[...]
Our summary: Thickness dependence of chemical ordering and fourfold exchange anisotropy in FeRh/CoFe bilayers. Study of the thickness dependence of chemical ordering and fourfold exchange anisotropy in FeRh/CoFe bilayers before and after the AF–FM phase transition. Increase in magnetic phase transition temperature with thickness due to decrease in low-order interfaces.
chemical ordering, fourfold exchange anisotropy, FeRh/CoFe bilayers, phase transition
Publication
From Real Vegetation to Its Tactile Simulation
Published on 2025-03-10 by Alessandro Martinelli, Davide Fabiocchi, Francesca Picchio, Hermes Giberti, Marco Carnevale @MDPI
Abstract: The exploitation of immersive simulation platforms to improve traditional training techniques in the agricultural industry sector would enable year-round accessibility, flexibility, safety, and consistent high-quality training for agricultural operators. An innovative workflow in virtual simulations for training and educational purposes includes an immersive environment in which the operator can interact with plants through haptic interfaces, following instructions imparted by a non-playing char[...]
Our summary: Exploiting immersive simulation platforms for realistic training in agriculture through haptic interfaces and high-fidelity virtual simulations. Creating a multisensorial environment for operators to interact with plants in a realistic and immersive training environment. Finalizing a product as a realistic training platform for pruning, with potential for other operations and specializations.
immersive simulation, haptic interfaces, virtual simulations, multisensorial environment
Publication
Use of Biobased Resins Derived from Renewable Monomers for Sustainable 3D Fabrication Through Two-Photon Polymerization
Published on 2025-03-10 by Francisco Gontad, Jaime Cuartero, Sara Vidal, Nerea Otero, Natalia M. Schulz, Tobias Robert @MDPI
Abstract: This work demonstrates the fabrication of microstructures with formulations containing bio-based prepolymers derived from itaconic acid, commercial reactive diluents, photo initiators, and inhibitors, through two-photon polymerization. Lateral and vertical resolutions within the micron range can be achieved by the adjustment of laser scanning speed and pulse energy, and through the use of microscope objectives with high magnification and numerical aperture. The fabrication throughput can be slig[...]
Our summary: Fabrication of microstructures using biobased resins derived from renewable monomers through two-photon polymerization, achieving micron range resolutions and demonstrating feasibility for 3D microstructure fabrication.
Biobased Resins, Renewable Monomers, Two-Photon Polymerization, Microstructures
Publication
Light valve system with gap maintenance system
Patent published on the 2025-03-06 in WO under Ref WO2025049744 by SEURAT TECH INC [US] (Elhadj Selim [us], Sargolzaeiaval Yasaman [us], Davidson Zoey [us])
Abstract: A light valve can include a liquid crystal layer having a first and a second side. A first substrate is positioned in contact with the first side of the liquid crystal layer, with the first substrate having a first semiconductor layer. A second substrate is positioned in contact with the second side of the liquid crystal layer, with the second substrate having a second semiconductor transparent electrode layer and a second semiconductor layer. A plurality of laser transparent aperture support st[...]
Our summary: Light valve system with gap maintenance system, includes liquid crystal layer with first and second sides, substrates with semiconductor layers, and laser transparent aperture support structures for stable uniform gap.
light valve system, gap maintenance system, liquid crystal layer, semiconductor layer
Patent
Polyamide resin composition for laser direct structuring process and molded article comprising same
Patent published on the 2025-03-06 in WO under Ref WO2025048342 by LOTTE CHEMICAL CORP [KR] (Kim Yang Il [kr], Park Chan Moo [kr], Jin Young Sub [kr], Lee Sang Hwa [kr])
Abstract: A polyamide resin composition of the present invention comprises: about 100 parts by weight of a base material including about 60 to about 95 wt% of a semi-aromatic polyamide resin having two melting points (Tm) and satisfying formula 1 and about 5 to about 40 wt% of glass fibers; about 1 to about 10 parts by weight of an additive for laser direct structuring; and about 0.1 to about 2 parts by weight of a phosphorus-based compound having a molecular weight of about 500 to about 1,500 g/mol. The [...]
Our summary: Polyamide resin composition with laser direct structuring additive and phosphorus-based compound for improved plating reliability and rigidity.
polyamide resin, laser direct structuring, molded article, glass fibers
Patent
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