Surface remelting/skin scanning of components is generally performed during the selective laser melting (SLM) process to improve surface quality a part. However, chemical effects remelting are not well understood. In this study, cuboidal parts fabricated with and without were characterised using electron microscopy (SEM), profilometry X-ray photoelectron spectrophotometry (XPS). The SEM images showed low-amplitude undulating pattern was observed on both surfaces. chemistries remelted/skin...

We review the use of additive manufacturing (AM) as a novel technique for production milli-scale reactor systems. Five well-developed techniques: stereolithography (SL), multi-jet modelling (MJM), selective laser melting (SLM), sintering (LS) and fused deposition (FDM) were used to manufacture number miniaturised reactors which tested using range organic inorganic reactions.

Selective laser melting (SLM) has previously been shown to be a viable method for fabricating biomedical implants; however, the surface chemistry of SLM fabricated parts is poorly understood. In this study, X-ray photoelectron spectroscopy (XPS) was used determine chemistries (a) as-fabricated (SLM-AF) Ti6Al4V and (b) mechanically polished (SLM-MP) samples compared with (c) traditionally manufactured (forged) samples. The SLM–AF observed porous an average roughness (Ra) 17.6 ± 3.7 μm. SLM-AF...

Abstract Well‐dispersed nanocomposite powder with spherical morphology and suitable particle size for processing by laser sintering was successfully produced coating polyamide 12 (PA12) particles carbon nanotubes (CNTs). Flexural, impact, tensile test specimens the PA12–CNT showed no distortion good definition. The density of laser‐sintered parts higher than that neat PA12, which authors propose is mainly due to absorption CNT particles. Compared PA12 parts, enhanced flexural, properties...

The thermal influence of carbon nanotubes (CNTs) on the PA12 in laser sintering process was assessed by physical experiments and a three dimensional simulation model. It appears that, adding CNTs into matrix, conductivity increased. A double ellipsoidal heat flux model applied to input dimensional, continuous moving, volumetric source. predicted temperature distributions suggested that conducted wider deeper PA12-CNT sample than PA12. Greater conduction can reduce interspace between two...

A method to efficiently immobilize enzymes on 3D printed continuous-flow devices is presented.

3D printing has been employed to manufacture advanced reactor geometries based on miniaturised continuous-flow oscillatory baffled reactors (mCOBRs) and they have applied for the fouling free synthesis of silver nanoparticles with optimal size control.

Surface modification of an implant with a biomolecule is used to improve its biocompatibility and reduce post-implant complications. In this study, novel approach has been functionalise phosphonic acid monolayers drug. Ti6Al4V components fabricated using selective laser melting (SLM) were functionalised Paracetamol (a pharmaceutically relevant biomolecule) based self-assembled (SAMs). The attachment, stability the on SLM surface functionalisation SAMs studied X-ray photoelectron spectroscopy...

Abstract Its transparency, esthetic appeal, chemical inertness, and electrical resistivity make glass an excellent candidate for small‐ large‐scale applications in the chemical, electronics, automotive, aerospace, architectural industries. Additive manufacturing of has potential to open new possibilities design reduce costs associated with complex customized structures that are difficult shape traditional casting or subtractive methods. However, despite significant progress additive metals,...

Laser sintering is a commonly used Additive Manufacturing (AM) technique applicable to variety of applications in fields such as the automotive industry, healthcare, and consumer goods. As well offering mechanical properties suitable for end-use part production, polymer laser can produce more complex structures than many other AM techniques since it does not require support structures, parts be stacked build area efficient processing. A wide range polymers should theoretically processable by...

The feasibility of using indirect selective laser sintering (SLS) to produce parts from glass-ceramic materials for bone replacement applications has been investigated. A castable glass based on the system SiO 2 Al O 3 P 5 CaO CaF that crystallizes a with apatite and mullite phases was produced, blended an acrylic binder, processed by SLS. Green good structural integrity were produced wide range processing conditions, allowing both monolayer multilayer components be constructed. Following...

Abstract The fabrication of tissue engineering scaffolds based on the polymerization crosslinked polylactide using leaching and batch foaming to generate well‐controlled interconnected biodegradable polymer is reported. scaffold parameters are studied in relation interpore connectivity, pore morphology, structural stability PLA scaffold. In vitro cell culture degradation used analyze biocompatibility biodegradability scaffolds. new thermoset highly suitable for bone applications due their...

Selective laser sintering (SLS) enables the fast, flexible and cost-efficient production of parts directly from 3D CAD data. Unlike more established machine tools, there is a marked lack process monitoring feedback control key variables. In-situ analysis techniques permit emergence repair techniques, in-process optimization parameters, will also serve to save time material. In this study, optical coherence tomography (OCT) used for first evaluate components produced by SLS. Using...

Additive manufacturing or '3D printing' is being developed as a novel process for the production of bespoke micro- and milliscale fluidic devices. When coupled with online monitoring optimisation software, this offers an advanced, customised method performing automated chemical synthesis. This paper reports use two additive processes, stereolithography selective laser melting, to create multifunctional devices embedded reaction capability. The selectively melted parts are first published...

In this work, the feasibility of processing polylactic acid (PLA) and a PLA/nanoclay composite by laser sintering (LS) were investigated. The morphology both PLA powder was examined scanning electron microscopy. LS process parameters, especially bed temperature, power, scan count studied. effect addition nanoclay on thermal flexural properties parts examined. results showed that required lower temperature compared with neat PLA. Under same exhibited an improvement in modulus Flexural...