Printing and characterization of three‐dimensional high‐loaded nanocomposites structures

Sciancalepore, Corrado; Bondioli, Federica; Messori, Massimo; Milanese, Daniel

doi:10.1002/mdp2.256

Cited by 3 publications

(2 citation statements)

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“…3D printing of silica is a technological area in its infancy, only recently achieving the commercialization stage in some of its implementations, with products such as Glassomer 31 and Nobula 32 . In research settings, a range of glass printing techniques was demonstrated with varying degrees of success [33][34][35][36][37][38][39][40] . The most promising, and so far, the only technique that has resulted in a drawable preform is stereolithography (SLA) 34 .…”

Section: Architectural and Morphological Control Of The Fiber Cross-s...mentioning

confidence: 99%

Creating fiber-embedded photonic circuitry by liquid-phase structuring of multi-material cores

Lima

Leffel

Zheng

et al. 2023

Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XVI

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Multi-material fibers are a promising platform for integrating nanoscale structures into macroscale photonic systems due to their unique aspect ratio: fiber cores can be kilometers long and sub-micrometric in their cross-section simultaneously. We are introducing Very Large-Scale Integration for Fibers (or, in short, VLSI-Fi) – manufacturing of integrated photonic circuits in a fiber analogous to VLSI from the microelectronics realm. VLSI-Fi starts with a thermal draw of the 3D printed preform, defining the cross-sectional geometry of the fiber, followed by the axial patterning of the fiber cores into arrays of integrated devices using a material-selective spatially coherent capillary breakup1,2 . Additional control over the photonic and electronic properties of devices is accomplished through segregation-driven control of doping. The result is a fiber-embedded integrated photonic circuit with user-defined 3D architecture providing the desired functionality. We argue that the capillary breakup of a viscous thread, nonlinear and often chaotic, becomes predictable if the axial symmetry of the thread viscosity is broken. We found that the capillary breakup of semiconducting fiber cores initiated by feeding the fiber through a spot-like liquefaction zone results in deterministic photonic and optoelectronic structures, such as gratings and spherical resonators. As a proof of concept, we demonstrate a selective breakup of a silicon core in fiber with one silicon and one vanadium core into an array of spherical silicon resonators, with a vanadium electrode flanking those resonators for electrical tuning of their resonant frequencies. Such cascaded resonators are a nontrivial example of photonic circuitry implemented in fiber using a non-CMOS approach.

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Section: Architectural and Morphological Control Of The Fiber Cross-s...mentioning

confidence: 99%

Creating fiber-embedded photonic circuitry by liquid-phase structuring of multi-material cores

Lima

Leffel

Zheng

et al. 2023

Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XVI

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“…The developed composites, based on PBAT, allow combining high structural flexibility with the production of environmentally friendly filaments for 3D printing, launching interesting challenges in the manufacturing of 3D objects with customized characteristics, shape, and dimensions. − Indeed the biocomposite materials made by 3D printing can result in the improved and tailored performance of 3D-printed components and objects, thus reducing the gap among design, manufacturing of a particular device, and a more sustainable technological approach. In fact, 3D printing technology with biomaterials can potentially create a fully sustainable and circular manufacturing process, realizing personalized products locally only when needed and using biomaterials as feedstock.…”

Section: Introductionmentioning

confidence: 99%

Flexible PBAT-Based Composite Filaments for Tunable FDM 3D Printing

Sciancalepore

Togliatti

Marozzi

et al. 2022

ACS Appl. Bio Mater.

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Biobased composites with peculiar properties offer an attractive route for producing environmentally friendly materials. The reinforcement for poly(butylene adipate- co -terephthalate) (PBAT), based on zein-titanium dioxide (TiO 2 ) complex (ZTC) microparticles, is presented and used to produce composite filaments, successfully 3-dimensionally (3D) printed by fused deposition modeling (FDM). The outcome of ZTC addition, ranging from 5 to 40 wt %, on the thermo-mechanical properties of composite materials was analyzed. Results reveal that storage modulus increased with increasing the ZTC content, leading to a slight increase in the glass transition temperature. The creep compliance varies with the ZTC concentration, denoting a better resistance to deformation under constant stress conditions for composites with higher complex content. Scanning electron microscopy was used to assess the quality of interphase adhesion between PBAT and ZTC, showing good dispersion and distribution of complex microparticles in the polymer matrix. Infrared spectroscopy confirmed the formation of a valid interface due to the formation of hydrogen bonds between filler and polymer matrix. Preliminary tests on the biocompatibility of these materials were also performed, showing no cytotoxic effects on cell viability. Finally, the 3D printability of biobased composites was demonstrated by realizing complex structures with a commercial FDM printer.

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