All Outputs (118)

Simultaneous Tracking of Pseudomonas aeruginosa motility in liquid and at the Solid-Liquid Interface Reveals Differential Roles for the Flagellar Stators (2019)
Journal Article
Hook, A. L., Flewellen, J. L., Dubern, J.-F., Carabelli, A., Zald, I. M., Berry, R. M., …Alexander, M. R. (2019). Simultaneous Tracking of Pseudomonas aeruginosa motility in liquid and at the Solid-Liquid Interface Reveals Differential Roles for the Flagellar Stators. mSystems, 4(5), Article e00390-19. https://doi.org/10.1128/mSystems.00390-19

Bacteria sense chemicals, surfaces, and other cells and move toward some and away from others. Studying how single bacterial cells in a population move requires sophisticated tracking and imaging techniques. We have established quantitative methodolo... Read More about Simultaneous Tracking of Pseudomonas aeruginosa motility in liquid and at the Solid-Liquid Interface Reveals Differential Roles for the Flagellar Stators.

Multifunctional Bioinstructive 3D Architectures to Modulate Cellular Behavior (2019)
Journal Article
Vaithilingam, J., Sanjuan‐Alberte, P., Campora, S., Rance, G. A., Jiang, L., Thorpe, J., …Rawson, F. J. (2019). Multifunctional Bioinstructive 3D Architectures to Modulate Cellular Behavior. Advanced Functional Materials, 29(38), Article 1902016. https://doi.org/10.1002/adfm.201902016

Biological structures control cell behavior via physical, chemical, electrical, and mechanical cues. Approaches that allow us to build devices that mimic these cues in a combinatorial way are lacking due to there being no suitable instructive materia... Read More about Multifunctional Bioinstructive 3D Architectures to Modulate Cellular Behavior.

High-throughput characterization of fluid properties to predict droplet ejection for three-dimensional inkjet printing formulations (2019)
Journal Article
Zhou, Z., Ruiz Cantu, L., Chen, X., Alexander, M. R., Roberts, C. J., Hague, R., …Wildman, R. (2019). High-throughput characterization of fluid properties to predict droplet ejection for three-dimensional inkjet printing formulations. Additive Manufacturing, 29, Article 100792. https://doi.org/10.1016/j.addma.2019.100792

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.

Water-Based 3D Inkjet Printing of an Oral Pharmaceutical Dosage Form (2019)
Journal Article
Cader, H. K., Rance, G. A., Alexander, M. R., Gonçalves, A. D., Roberts, C. J., Tuck, C. J., & Wildman, R. D. (2019). Water-Based 3D Inkjet Printing of an Oral Pharmaceutical Dosage Form. International Journal of Pharmaceutics, 564, 359-368. https://doi.org/10.1016/j.ijpharm.2019.04.026

Inkjet printing is a form of additive manufacturing where liquid droplets are selectively deposited onto a substrate followed by solidification. The process provides significant potential advantages for producing solid oral dosage forms or tablets, i... Read More about Water-Based 3D Inkjet Printing of an Oral Pharmaceutical Dosage Form.

Lipids and polymers in pharmaceutical technology: lifelong companions (2019)
Journal Article
Siepmann, J., Faham, A., Clas, S.-D., Boyd, B. J., Jannin, V., Bernkop-Schnürch, A., …Leroux, J.-C. (2019). Lipids and polymers in pharmaceutical technology: lifelong companions. International Journal of Pharmaceutics, 558, 128-142. https://doi.org/10.1016/j.ijpharm.2018.12.080

In pharmaceutical technology, lipids and polymers are considered pillar excipients for the fabrication of most dosage forms, irrespective of the administration route. They play various roles ranging from support vehicles to release rate modifiers, st... Read More about Lipids and polymers in pharmaceutical technology: lifelong companions.

Geometry alone influences stem cell differentiation in a precision 3D printed stem cell niche (2018)
Preprint / Working Paper
Prina, E., Sidney, L., Tromayer, M., Moore, J., Liska, R., Bertolin, M., …Rose, F. R. Geometry alone influences stem cell differentiation in a precision 3D printed stem cell niche

Stem cells within epithelial tissues reside in anatomical structures known as crypts that are known to contribute to the mechanical and chemical milieu important for function. To date, epithelial stem cell therapies have largely ignored the niche and... Read More about Geometry alone influences stem cell differentiation in a precision 3D printed stem cell niche.

Synthesis of methacrylate-terminated block copolymers with reduced transesterification by controlled ring-opening polymerization (2018)
Journal Article
Ruiz-Cantu, L. A., Pearce, A. K., Burroughs, L., Bennett, T. M., Vasey, C. E., Wildman, R., …Taresco, V. (2019). Synthesis of methacrylate-terminated block copolymers with reduced transesterification by controlled ring-opening polymerization. Macromolecular Chemistry and Physics, 220(2), Article 1800459. https://doi.org/10.1002/macp.201800459

This work presents a robust method to achieve the synthesis of low molecular weight polyesters 26 via ring-opening polymerization (ROP) initiated by 2-hydroxyethyl-methacrylate (HEMA) 27 when using triazabicyclodecene (TBD) as catalyst. The effect th... Read More about Synthesis of methacrylate-terminated block copolymers with reduced transesterification by controlled ring-opening polymerization.

Reactive material jetting of polyimide insulators for complex circuit board design (2018)
Journal Article
Zhang, F., Saleh, E., Vaithilingam, J., Li, Y., Tuck, C., Hague, R., …He, Y. (2019). Reactive material jetting of polyimide insulators for complex circuit board design. Additive Manufacturing, 25, 477-484. https://doi.org/10.1016/j.addma.2018.11.017

Polyimides are a group of high performance thermal stable dielectric materials used in diverse applications. In this article, we synthesized and developed a high-performance polyimide precursor ink for a Material Jetting (MJ) process. The proposed in... Read More about Reactive material jetting of polyimide insulators for complex circuit board design.

Geometrical effects on residual stress in selective laser melting (2018)
Journal Article
Parry, L., Ashcroft, I., & Wildman, R. (2019). Geometrical effects on residual stress in selective laser melting. Additive Manufacturing, 25, 166-175. https://doi.org/10.1016/j.addma.2018.09.026

Selective laser melting is an increasingly attractive technology for the manufacture of complex and low volume / high value metal parts. However, the inevitable residual stresses that are generated can lead to defects or build failure. Due to the com... Read More about Geometrical effects on residual stress in selective laser melting.

Extrusion 3D printing of paracetamol tablets from a single formulation with tunable release profiles through control of tablet geometry (2018)
Journal Article
Khaled, S. A., Alexander, M. R., Irvine, D. J., Wildman, R. D., Wallace, M. J., Sharpe, S., …Roberts, C. J. (2018). Extrusion 3D printing of paracetamol tablets from a single formulation with tunable release profiles through control of tablet geometry. AAPS PharmSciTech, 19(8), 3403–3413. https://doi.org/10.1208/s12249-018-1107-z

An extrusion based 3D printer was used to fabricate paracetamol tablets with different geometries (mesh, ring, and solid) from a single paste-based formulation formed from standard pharmaceutical ingredients. The tablets demonstrate that tunable drug... Read More about Extrusion 3D printing of paracetamol tablets from a single formulation with tunable release profiles through control of tablet geometry.

Optimisation of substrate angles for multi-material and multi-functional inkjet printing (2018)
Journal Article
Vaithilingam, J., Saleh, E., Wildman, R. D., Hague, R. J., & Tuck, C. (2018). Optimisation of substrate angles for multi-material and multi-functional inkjet printing. Scientific Reports, 8, Article 9030. https://doi.org/10.1038/s41598-018-27311-6

Three dimensional inkjet printing of multiple materials for electronics applications are challenging due to the limited material availability, inconsistencies in layer thickness between dissimilar materials and the need to expose the printed tracks o... Read More about Optimisation of substrate angles for multi-material and multi-functional inkjet printing.

Using total specific cost indices to compare the cost performance of additive manufacturing for the medical devices domain (2018)
Journal Article
Baumers, M., Wildman, R., Wallace, M., Yoo, J., Blackwell, B., Farr, P., & Roberts, C. J. (2018). Using total specific cost indices to compare the cost performance of additive manufacturing for the medical devices domain. Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 1-15. https://doi.org/10.1177/0954405418774591

The label additive manufacturing, also known as three-dimensional printing, serves as an umbrella term for a number of technologies designed to deposit product geometries directly from build materials and digital design information. However, as a rel... Read More about Using total specific cost indices to compare the cost performance of additive manufacturing for the medical devices domain.

Effective design and simulation of surface-based lattice structures featuring volume fraction and cell type grading (2018)
Journal Article
Maskery, I., Aremu, A., Parry, L., Wildman, R., Tuck, C., & Ashcroft, I. (2018). Effective design and simulation of surface-based lattice structures featuring volume fraction and cell type grading. Materials and Design, 155, 220-232. https://doi.org/10.1016/j.matdes.2018.05.058

In this paper we present a numerical investigation into surface-based lattice structures with the aim of facilitating their design for additive manufacturing. We give the surface equations for these structures and show how they can be used to tailor... Read More about Effective design and simulation of surface-based lattice structures featuring volume fraction and cell type grading.

3D-printed components for quantum devices (2018)
Journal Article
Saint, R., Evans, W., Zhou, Y., Barrett, T. J., Fromhold, T., Saleh, E., …Krüger, P. (2018). 3D-printed components for quantum devices. Scientific Reports, 8, https://doi.org/10.1038/s41598-018-26455-9

Recent advances in the preparation, control and measurement of atomic gases have led to new insights into the quantum world and unprecedented metrological sensitivities, e.g. in measuring gravitational forces and magnetic fields. The full potential o... Read More about 3D-printed components for quantum devices.

Effect of surfactant on Pseudomonas aeruginosa colonization of polymer microparticles and flat films (2018)
Journal Article
Hüsler, A., Haas, S., Parry, L., Romero, M., Nisisako, T., Williams, P., Wildman, R. D., & Alexander, M. R. (2018). Effect of surfactant on Pseudomonas aeruginosa colonization of polymer microparticles and flat films. RSC Advances, 8(28), https://doi.org/10.1039/c8ra01491d

Micro- and nanoparticles are of great interest because of their potential for trafficking into the body for applications such as low-fouling coatings on medical devices, drug delivery in pharmaceutics and cell carriers in regenerative medicine strate... Read More about Effect of surfactant on Pseudomonas aeruginosa colonization of polymer microparticles and flat films.

Author Correction: Additive manufacture of complex 3D Au-containing nanocomposites by simultaneous two-photon polymerisation and photoreduction (2018)
Journal Article
Hu, Q., Sun, X., Parmenter, C. D. J., Fay, M. W., Smith, E. F., Rance, G. A., …Wildman, R. (2018). Author Correction: Additive manufacture of complex 3D Au-containing nanocomposites by simultaneous two-photon polymerisation and photoreduction. Scientific Reports, 8(1), Article 3512. https://doi.org/10.1038/s41598-018-21513-8

A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has not been fixed in the paper.

Tuneable ionic control of polymeric films for inkjet based 3D printing (2018)
Journal Article
Karjalainen, E., Wales, D. J., Gunasekera, D. H., Dupont, J., Licence, P., Wildman, R. D., & Sans, V. (in press). Tuneable ionic control of polymeric films for inkjet based 3D printing. ACS Sustainable Chemistry and Engineering, https://doi.org/10.1021/acssuschemeng.7b04279

Inkjet printing is a powerful additive manufacturing (AM) technique to generate advanced and complex geometries. However, requirements of low viscosity and surface tension are limiting the range of functional inks available, thus hindering the develo... Read More about Tuneable ionic control of polymeric films for inkjet based 3D printing.

Topology optimization of geometrically nonlinear structures using an evolutionary optimization method (2018)
Journal Article
Abdi, M., Ashcroft, I., & Wildman, R. (in press). Topology optimization of geometrically nonlinear structures using an evolutionary optimization method. Engineering Optimization, https://doi.org/10.1080/0305215X.2017.1418864

Iso-XFEM method is an evolutionary optimization method developed in our previous studies to enable the generation of high resolution topology optimised designs suitable for additive manufacture. Conventional approaches for topology optimization requi... Read More about Topology optimization of geometrically nonlinear structures using an evolutionary optimization method.

3D extrusion printing of high drug loading immediate release paracetamol tablets (2018)
Journal Article
Khaled, S. A., Alexander, M. R., Wildman, R. D., Wallace, M. J., Sharpe, S., Yoo, J., & Roberts, C. J. (2018). 3D extrusion printing of high drug loading immediate release paracetamol tablets. International Journal of Pharmaceutics, 538(1-2), 223-230. https://doi.org/10.1016/j.ijpharm.2018.01.024

The manufacture of immediate release high drug loading paracetamol oral tablets was achieved using an extrusion based 3D printer from a premixed water based paste formulation. The 3D printed tablets demonstrate that a very high drug (paracetamol) loa... Read More about 3D extrusion printing of high drug loading immediate release paracetamol tablets.

Identification of novel ‘inks’ for 3D printing using high throughput screening: bioresorbable photocurable polymers for controlled drug delivery (2018)
Journal Article
Louzao, I., Koch, B., Taresco, V., Ruiz Cantu, L., Irvine, D. J., Roberts, C. J., …Alexander, M. R. (in press). Identification of novel ‘inks’ for 3D printing using high throughput screening: bioresorbable photocurable polymers for controlled drug delivery. ACS Applied Materials and Interfaces, 10(8), https://doi.org/10.1021/acsami.7b15677

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.