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Outputs (87)

Developing colloidal nanoparticles for inkjet printing of devices with optical properties tuneable from the UV to the NIR (2024)
Journal Article

Colloidal low-dimensional photo-sensitive nanomaterials have attracted significant interest for optoelectronic device applications where inkjet printing offers a high accuracy and low waste route for their deposition on silicon-based, as well as flex... Read More about Developing colloidal nanoparticles for inkjet printing of devices with optical properties tuneable from the UV to the NIR.

Enabling high-fidelity personalised pharmaceutical tablets through multimaterial inkjet 3D printing with a water-soluble excipient (2024)
Journal Article

Additive manufacturing offers manufacture of personalised pharmaceutical tablets through design freedoms and material deposition control at an individual voxel level. This control goes beyond geometry and materials choices: inkjet based 3D printing e... Read More about Enabling high-fidelity personalised pharmaceutical tablets through multimaterial inkjet 3D printing with a water-soluble excipient.

Enabling High-fidelity Personalized Pharmaceutical Tablets through Multimaterial Inkjet 3D Printing with a Water-soluble Excipient (2024)
Journal Article

Additive manufacturing offers manufacture of personalised pharmaceutical tablets through design freedoms and material deposition control at an individual voxel level. This control goes beyond geometry and materials choices: inkjet based 3D printing e... Read More about Enabling High-fidelity Personalized Pharmaceutical Tablets through Multimaterial Inkjet 3D Printing with a Water-soluble Excipient.

Identification of an affordable and printable metastable β Ti alloy with outstanding deformation behaviour for use in laser powder bed fusion (2024)
Journal Article

Research on metastable β Ti alloys has recently shown the possibility to achieve outstanding ductility and work hardening behaviours by engineering the materials’ unique strain transformable attributes and responses to heat treatment. As quenching is... Read More about Identification of an affordable and printable metastable β Ti alloy with outstanding deformation behaviour for use in laser powder bed fusion.

Drop-on-demand metal jetting of pure copper: On the interaction of molten metal with ceramic and metallic substrates (2024)
Journal Article

Copper, renowned for its exceptional electrical and thermal conductivity at a low cost, holds great promise in electronic applications. While additive manufacturing of copper has attracted interest, the exploration of applying Drop-on-demand Metal Je... Read More about Drop-on-demand metal jetting of pure copper: On the interaction of molten metal with ceramic and metallic substrates.

Quantum nature of charge transport in inkjet-printed graphene revealed in high magnetic fields up to 60T (2024)
Journal Article

Inkjet‐printing of graphene, iGr, provides an alternative route for the fabrication of highly conductive and flexible graphene films for use in devices. However, the contribution of quantum phenomena associated with 2D single layer graphene, SLG, to... Read More about Quantum nature of charge transport in inkjet-printed graphene revealed in high magnetic fields up to 60T.

Formulation of functional materials for inkjet printing: A pathway towards fully 3D printed electronics (2023)
Journal Article

Inkjet printing offers a facile route for manufacturing the next generation of electronic devices, by combining the design freedom of additive manufacturing technologies with tuneable properties of functional materials and opportunities for their int... Read More about Formulation of functional materials for inkjet printing: A pathway towards fully 3D printed electronics.

Amorphous-crystalline nanostructured Nd-Fe-B permanent magnets using laser powder bed fusion: Metallurgy and magnetic properties (2023)
Journal Article

Laser powder-bed fusion (PBF-LB), a class of additive manufacturing (AM), has attracted wide interest in the production of Nd-Fe-B permanent magnets, benefiting from the minimisation of waste of rare-earth elements and the post-processing requirement... Read More about Amorphous-crystalline nanostructured Nd-Fe-B permanent magnets using laser powder bed fusion: Metallurgy and magnetic properties.

Stable large area drop-on-demand deposition of a conductive polymer ink for 3D-printed electronics, enabled by bio-renewable co-solvents (2023)
Journal Article

Development of conductive polymer ink formulations with reliable jetting stability and physical properties could offer sustainable routes for scaling-up the 3D-printing of electronics. We report a new poly(3,4-ethylenedioxythiophene) polystyrene sulp... Read More about Stable large area drop-on-demand deposition of a conductive polymer ink for 3D-printed electronics, enabled by bio-renewable co-solvents.

Innate immune cell instruction using micron-scale 3D objects of varied architecture and polymer chemistry: The ChemoArchiChip (2023)
Journal Article

To design effective immunomodulatory implants, innate immune cell interactions at the surface of biomaterials need to be controlled and understood. The architectural design freedom of two-photon polymerization is used to produce arrays of surface-mou... Read More about Innate immune cell instruction using micron-scale 3D objects of varied architecture and polymer chemistry: The ChemoArchiChip.

Strategies for Integrating Metal Nanoparticles with Two-Photon Polymerization Process: Toward High Resolution Functional Additive Manufacturing (2023)
Journal Article

This study reports the successful fabrication of complex 3D metal nanoparticle–polymer nanocomposites using two-photon polymerization (2PP). Three complementary strategies are detailed: in situ formation of metal nanoparticles (MeNPs) through a singl... Read More about Strategies for Integrating Metal Nanoparticles with Two-Photon Polymerization Process: Toward High Resolution Functional Additive Manufacturing.

Exploiting Generative Design for Multi-Material Inkjet 3D Printed Cell Instructive, Bacterial Biofilm Resistant Composites (2022)
Working Paper

As our understanding of disease grows, it is becoming established that treatment needs to be personalized and targeted to the needs of the individual. In this paper we show that multi-material inkjet-based 3D printing, when backed with generative des... Read More about Exploiting Generative Design for Multi-Material Inkjet 3D Printed Cell Instructive, Bacterial Biofilm Resistant Composites.

Ink-jet 3D printing as a strategy for developing bespoke non-eluting biofilm resistant medical devices (2021)
Journal Article

Chronic infection as a result of bacterial biofilm formation on implanted medical devices is a major global healthcare problem requiring new biocompatible, biofilm-resistant materials. Here we demonstrate how bespoke devices can be manufactured throu... Read More about Ink-jet 3D printing as a strategy for developing bespoke non-eluting biofilm resistant medical devices.

The influence of printing parameters on multi-material two-photon polymerisation based micro additive manufacturing (2021)
Journal Article

Two-photon polymerisation (2PP) based additive manufacturing has emerged as a powerful technology to fabricate complex three-dimensional micro- and nanoscale architectures. However, a comprehensive understanding of the effect of printing parameters o... Read More about The influence of printing parameters on multi-material two-photon polymerisation based micro additive manufacturing.

Insights into drop-on-demand metal additive manufacturing through an integrated experimental and computational study (2021)
Journal Article

Drop-on-demand metal jetting is a recent additive manufacturing technology opening new opportunities for the fabrication of complex single and multi-metal components. MetalJet, the Océ developed technique used in this study, has the capacity to produ... Read More about Insights into drop-on-demand metal additive manufacturing through an integrated experimental and computational study.

Residual polymer stabiliser causes anisotropic electrical conductivity during inkjet printing of metal nanoparticles (2021)
Journal Article

Inkjet printing of metal nanoparticles allows for design flexibility, rapid processing and enables the 3D printing of functional electronic devices through co-deposition of multiple materials. However, the performance of printed devices, especially t... Read More about Residual polymer stabiliser causes anisotropic electrical conductivity during inkjet printing of metal nanoparticles.

Microstructure and tensile properties of additive manufactured Ti-6Al-4V with refined prior-? grain structure obtained by rapid heat treatment (2021)
Journal Article

Heat treatments tailored for additive manufactured Ti-6Al-4V can be used to attain desirable microstructures associated with superior mechanical properties. Rapid heat treatments, for example, can be used to recrystallise the microstructure of laser... Read More about Microstructure and tensile properties of additive manufactured Ti-6Al-4V with refined prior-? grain structure obtained by rapid heat treatment.

Modulating the biological function of protein by tailoring the adsorption orientation on nanoparticles (2020)
Journal Article

Protein orientation in nanoparticle-protein conjugates plays a crucial role in binding to cell receptors and ultimately, defines their targeting efficiency. Therefore, understanding fundamental aspects of the role of protein orientation upon adsorpti... Read More about Modulating the biological function of protein by tailoring the adsorption orientation on nanoparticles.

Development and Testing of Soft Magnetic Rotor for a Switched Reluctance Motor Built Through Additive Manufacturing Technology (2020)
Conference Proceeding

Additive manufacturing, commonly known as 3D printing, is an emerging technology that is gaining considerable research interest in recent years. In particular, metal printing methodologies might be successfully employed in developing lightweight and... Read More about Development and Testing of Soft Magnetic Rotor for a Switched Reluctance Motor Built Through Additive Manufacturing Technology.

3D Printing as a Technology Enabler for Electrical Machines: Manufacturing and Testing of a Salient Pole Rotor for SRM (2020)
Conference Proceeding

Among the various technology enablers for modern electrical machines, additive manufacturing plays a key role. The advantage of having a precise control of the shape of ferromagnetic structures, whilst achieving good electromagnetic performance, fits... Read More about 3D Printing as a Technology Enabler for Electrical Machines: Manufacturing and Testing of a Salient Pole Rotor for SRM.

Recommended Personal Protective Equipment for Cochlear Implant and Other Mastoid Surgery During the COVID-19 Era (2020)
Journal Article

© 2020 American Laryngological, Rhinological and Otological Society Inc, "The Triological Society" and American Laryngological Association (ALA) Objectives/Hypothesis: The overall aim of this study was to evaluate personal protective equipment (PPE)... Read More about Recommended Personal Protective Equipment for Cochlear Implant and Other Mastoid Surgery During the COVID-19 Era.

Generation of graded porous structures by control of process parameters in the selective laser melting of a fixed ratio salt-metal feedstock (2020)
Journal Article

The demonstration of salt dissolution incorporated within laser powder-bed fusion fabrication processes has allowed the creation of complex porous structures without the need for sophisticated design algorithms. This serves to simplify the process, f... Read More about Generation of graded porous structures by control of process parameters in the selective laser melting of a fixed ratio salt-metal feedstock.

The Influence of Iron in Minimizing the Microstructural Anisotropy of Ti-6Al-4V Produced by Laser Powder-Bed Fusion (2020)
Journal Article

There remains a significant challenge in adapting alloys for metal based Additive Manufacturing (AM). Adjusting alloy composition to suit the process, particularly under regimes close to industrial practice, is therefore a potential solution. With th... Read More about The Influence of Iron in Minimizing the Microstructural Anisotropy of Ti-6Al-4V Produced by Laser Powder-Bed Fusion.

A Reactive Prodrug Ink Formulation Strategy for Inkjet 3D Printing of Controlled Release Dosage Forms and Implants (2020)
Journal Article

We propose a strategy for creating tuneable 3D printed drug delivery devices. 3D printing offers the opportunity for improved compliance and patient treatment outcomes through personalisation, but bottlenecks include finding formulations that provide... Read More about A Reactive Prodrug Ink Formulation Strategy for Inkjet 3D Printing of Controlled Release Dosage Forms and Implants.

Refinement of the grain structure of additive manufactured titanium alloys via epitaxial recrystallization enabled by rapid heat treatment (2020)
Journal Article

The coarse prior-? grain structure in titanium alloys produced by additive manufacturing is associated to mechanical anisotropy and limited fatigue life. Here we report a novel methodology to refine such structure by rapid heat treatment of Ti-6Al-4V... Read More about Refinement of the grain structure of additive manufactured titanium alloys via epitaxial recrystallization enabled by rapid heat treatment.

Evolution of carbon nanotubes and their metallurgical reactions in Al-based composites in response to laser irradiation during selective laser melting (2019)
Journal Article

Aluminium-based composites reinforced with carbon nanotubes are widely sought for their outstanding metallurgical and structural properties that largely depend on the manufacturing route. In this work, the process-structure-property relationship for... Read More about Evolution of carbon nanotubes and their metallurgical reactions in Al-based composites in response to laser irradiation during selective laser melting.

Electrical resistivity of pure copper processed by medium-powered laser powder bed fusion additive manufacturing for use in electromagnetic applications (2019)
Journal Article

Pure copper is an excellent thermal and electrical conductor, however, attempts to process it with additive manufacturing (AM) technologies have seen various levels of success. While electron beam melting (EBM) has successfully processed pure copper... Read More about Electrical resistivity of pure copper processed by medium-powered laser powder bed fusion additive manufacturing for use in electromagnetic applications.

High-throughput characterization of fluid properties to predict droplet ejection for three-dimensional inkjet printing formulations (2019)
Journal Article

Inkjet printing has been used as an Additive Manufacturing (AM) method to fabricate three-dimensional (3D) structures. However, a lack of materials suitable for inkjet printing poses one of the key challenges that impedes industry from fully adopting... Read More about High-throughput characterization of fluid properties to predict droplet ejection for three-dimensional inkjet printing formulations.

3D printing of Aluminium alloys: Additive Manufacturing of Aluminium alloys using selective laser melting (2019)
Journal Article

© 2019 The Authors Metal Additive Manufacturing (AM) processes, such as selective laser melting (SLM), enable the fabrication of arbitrary 3D-structures with unprecedented degrees of freedom. Research is rapidly progressing in this field, with promis... Read More about 3D printing of Aluminium alloys: Additive Manufacturing of Aluminium alloys using selective laser melting.

Chemical Imaging of Buried Interfaces in Organic-Inorganic Devices Using Focused Ion Beam-Time-of-Flight-Secondary-Ion Mass Spectrometry (2019)
Journal Article

Copyright © 2019 American Chemical Society. Organic-inorganic hybrid materials enable the design and fabrication of new materials with enhanced properties. The interface between the organic and inorganic materials is often critical to the device's pe... Read More about Chemical Imaging of Buried Interfaces in Organic-Inorganic Devices Using Focused Ion Beam-Time-of-Flight-Secondary-Ion Mass Spectrometry.

A comparison of Ti-6Al-4V in-situ alloying in Selective Laser Melting using simply-mixed and satellited powder blend feedstocks (2018)
Journal Article

In-situ alloying within laser powder-bed fusion, specifically Selective Laser Melting (SLM), has been investigated for the formulation of novel alloys from elemental powders to extend the benefits offered by these technologies. Inadequate preparation... Read More about A comparison of Ti-6Al-4V in-situ alloying in Selective Laser Melting using simply-mixed and satellited powder blend feedstocks.

Identification of novel ‘inks’ for 3D printing using high throughput screening: bioresorbable photocurable polymers for controlled drug delivery (2018)
Journal Article

A robust discovery methodology is presented to identify novel biomaterials suitable for 3D printing. Currently the application of Additive Manufacturing is limited by the availability of functional inks, especially in the area of biomaterials-this me... Read More about Identification of novel ‘inks’ for 3D printing using high throughput screening: bioresorbable photocurable polymers for controlled drug delivery.

Effect of annealing on the microstructure and magnetic properties of soft magnetic Fe-Si produced via laser additive manufacturing (2018)
Journal Article

© 2017 Acta Materialia Inc. We investigate the effect of annealing on the properties of Fe-6.9wt% Si produced by Selective Laser Melting (SLM), a powder-bed additive manufacturing technology. Results show that annealing at 1150 °C for 1 h produces a... Read More about Effect of annealing on the microstructure and magnetic properties of soft magnetic Fe-Si produced via laser additive manufacturing.

Insights into the mechanical properties of several triplyperiodic minimal surface lattice structures made by polymeradditive manufacturing (2017)
Journal Article

Three-dimensional lattices have applications across a range of fields including structural lightweighting, impact absorption and biomedicine. In this work, lattices based on triply periodic minimal surfaces were produced by polymer additive manufactu... Read More about Insights into the mechanical properties of several triplyperiodic minimal surface lattice structures made by polymeradditive manufacturing.

Additive manufacture of complex 3D Au-containing nanocomposites by simultaneous two-photon polymerisation and photoreduction (2017)
Journal Article

© 2017 The Author(s). The fabrication of complex three-dimensional gold-containing nanocomposite structures by simultaneous two-photon polymerisation and photoreduction is demonstrated. Increased salt delivers reduced feature sizes down to line width... Read More about Additive manufacture of complex 3D Au-containing nanocomposites by simultaneous two-photon polymerisation and photoreduction.

Calorimetric study and microstructure analysis of the order-disorder phase transformation in silicon steel built by SLM (2017)
Journal Article

Innovative Additive Manufacturing (AM) technologies like Selective Laser Melting (SLM) could prove to be efficient for the processing of brittle silicon steel (Fe-Si) with high silicon content. This research elucidates the effects of heat-treatment o... Read More about Calorimetric study and microstructure analysis of the order-disorder phase transformation in silicon steel built by SLM.

Informing additive manufacturing technology adoption: total cost and the impact of capacity utilisation (2017)
Journal Article

Informing Additive Manufacturing (AM) technology adoption decisions, this paper investigates the relationship between build volume capacity utilisation and efficient technology operation in an inter-process comparison of the costs of manufacturing a... Read More about Informing additive manufacturing technology adoption: total cost and the impact of capacity utilisation.

Design framework for multifunctional additive manufacturing: coupled optimization strategy for structures with embedded functional systems (2017)
Journal Article

The driver for this research is the development of multi-material additive manufacturing processes that provide the potential for multi-functional parts to be manufactured in a single operation. In order to exploit the potential benefits of this emer... Read More about Design framework for multifunctional additive manufacturing: coupled optimization strategy for structures with embedded functional systems.

Environmental Impacts of Selective Laser Melting: Do Printer, Powder, Or Power Dominate? (2016)
Journal Article
Faludi, J., Baumers, M., Maskery, I., & Hague, R. (2017). Environmental Impacts of Selective Laser Melting: Do Printer, Powder, Or Power Dominate?. Journal of Industrial Ecology, 21(S1), S144-S156. https://doi.org/10.1111/jiec.12528

© 2016 The Authors. Journal of Industrial Ecology, published by Wiley Periodicals, Inc., on behalf of Yale University. This life cycle assessment measured environmental impacts of selective laser melting, to determine where most impacts arise: machin... Read More about Environmental Impacts of Selective Laser Melting: Do Printer, Powder, Or Power Dominate?.

Metallurgy of high-silicon steel parts produced using selective laser melting (2016)
Journal Article
Garibaldi, M., Ashcroft, I., Simonelli, M., & Hague, R. (2016). Metallurgy of high-silicon steel parts produced using selective laser melting. Acta Materialia, 110, https://doi.org/10.1016/j.actamat.2016.03.037

The metallurgy of high-silicon steel (6.9%wt.Si) processed using Selective Laser Melting (SLM) is presented for the first time in this study. High-silicon steel has great potential as a soft magnetic alloy, but its employment has been limited due to... Read More about Metallurgy of high-silicon steel parts produced using selective laser melting.

Shape complexity and process energy consumption in electron beam melting: a case of something for nothing in additive manufacturing? (2016)
Journal Article
Baumers, M., Tuck, C., Wildman, R. D., Ashcroft, I., & Hague, R. J. (in press). Shape complexity and process energy consumption in electron beam melting: a case of something for nothing in additive manufacturing?. Journal of Industrial Ecology, https://doi.org/10.1111/jiec.12397

Additive manufacturing (AM) technology is capable of building up component geometry in a layer-by-layer process, entirely without tools, molds, or dies. One advantage of the approach is that it is capable of efficiently creating complex product geome... Read More about Shape complexity and process energy consumption in electron beam melting: a case of something for nothing in additive manufacturing?.

Quantification and characterisation of porosity in selectively laser melted Al–Si10–Mg using x-ray computed tomography (2016)
Journal Article

We used X-ray computed tomography (CT), microscopy and hardness measurements to study Al–Si10–Mg produced by selective laser melting (SLM). Specimens were subject to a series of heat treatments including annealing and precipitation hardening. The spe... Read More about Quantification and characterisation of porosity in selectively laser melted Al–Si10–Mg using x-ray computed tomography.

Design Framework for Multifunctional Additive Manufacturing: Placement and Routing of Three-Dimensional Printed Circuit Volumes (2015)
Journal Article

© 2015 by ASME. A framework for the design of additively manufactured (AM) multimaterial parts with embedded functional systems is presented (e.g., structure with electronic/electrical components and associated conductive paths). Two of the key stran... Read More about Design Framework for Multifunctional Additive Manufacturing: Placement and Routing of Three-Dimensional Printed Circuit Volumes.

Toward better build volume packing in additive manufacturing: classification of existing problems and benchmarks (2015)
Presentation / Conference Contribution
Araujo, L., Özcan, E., Atkin, J., Baumers, M., Tuck, C., & Hague, R. J. (2015). Toward better build volume packing in additive manufacturing: classification of existing problems and benchmarks.

In many cases, the efficient operation of Additive Manufacturing (AM) technology relies on build volumes being packed effectively. Packing algorithms have been developed in response to this requirement. The configuration of AM build volumes is partic... Read More about Toward better build volume packing in additive manufacturing: classification of existing problems and benchmarks.

Mechanical Properties of Ti-6Al-4V Selectively Laser Melted Parts with Body-Centred-Cubic Lattices of Varying cell size (2015)
Journal Article

Significant weight savings in parts can be made through the use of additive manufacture (AM), a process which enables the construction of more complex geometries, such as functionally graded lattices, than can be achieved conventionally. The existing... Read More about Mechanical Properties of Ti-6Al-4V Selectively Laser Melted Parts with Body-Centred-Cubic Lattices of Varying cell size.

A Study on the Laser Spatter and the Oxidation Reactions During Selective Laser Melting of 316L Stainless Steel, Al-Si10-Mg, and Ti-6Al-4V (2015)
Journal Article
Hague, R., Tuck, C., Simonelli, M., Tuck, C., Aboulkhair, N. T., Maskery, I., …Hague, R. J. (2015). A Study on the Laser Spatter and the Oxidation Reactions During Selective Laser Melting of 316L Stainless Steel, Al-Si10-Mg, and Ti-6Al-4V. Metallurgical and Materials Transactions A, 46(9), 3842-3851. https://doi.org/10.1007/s11661-015-2882-8

The creation of an object by selective laser melting (SLM) occurs by melting contiguous areas of a powder bed according to a corresponding digital model. It is therefore clear that the success of this metal Additive Manufacturing (AM) technology reli... Read More about A Study on the Laser Spatter and the Oxidation Reactions During Selective Laser Melting of 316L Stainless Steel, Al-Si10-Mg, and Ti-6Al-4V.

An experimental study into the effects of bulk and flow behaviour of laser sintering polymer powders on resulting part properties (2014)
Journal Article
Ziegelmeier, S., Christou, P., Wöllecke, F., Tuck, C., Goodridge, R. D., Hague, R. J., …Wintermantel, E. (2015). An experimental study into the effects of bulk and flow behaviour of laser sintering polymer powders on resulting part properties. Journal of Materials Processing Technology, 215, https://doi.org/10.1016/j.jmatprotec.2014.07.029

The properties of parts manufactured by laser sintering (LS) are, amongst others, influenced by the packing and flow efficiencies of the powders being processed. In particular, this study investigated the influence of the bulk and flow characteris... Read More about An experimental study into the effects of bulk and flow behaviour of laser sintering polymer powders on resulting part properties.

An error diffusion based method to generate functionally graded cellular structures (2014)
Journal Article
Brackett, D., Ashcroft, I., Wildman, R., & Hague, R. J. (2014). An error diffusion based method to generate functionally graded cellular structures. Computers and Structures, 138, https://doi.org/10.1016/j.compstruc.2014.03.004

The spatial variation of cell size in a functionally graded cellular structure is achieved using error diffusion to convert a continuous tone image into binary form. Effects of two control parameters, greyscale value and resolution on the resulting c... Read More about An error diffusion based method to generate functionally graded cellular structures.