Dr CHRISTOPHER PARMENTER's Outputs (16)

A facile one step route that introduces functionality to polymer powders for laser sintering (2024)
Journal Article
Krumins, E., Crawford, L. A., Rogers, D. M., Machado, F., Taresco, V., East, M., Irving, S. H., Fowler, H. R., Jiang, L., Starr, N., Parmenter, C. D., Kortsen, K., Cuzzucoli Crucitti, V., Avery, S. V., Tuck, C. J., & Howdle, S. M. (2024). A facile one step route that introduces functionality to polymer powders for laser sintering. Nature Communications, 15(1), Article 3137. https://doi.org/10.1038/s41467-024-47376-4

Laser Sintering (LS) is a type of Additive Manufacturing (AM) exploiting laser processing of polymeric particles to produce 3D objects. Because of its ease of processability and thermo-physical properties, polyamide-12 (PA-12) represents ~95% of the... Read More about A facile one step route that introduces functionality to polymer powders for laser sintering.

Evolution of the pore structure-transport relationship during catalyst reduction and sintering studied by integrated multi-scale porosimetry and multi-modal imaging (2023)
Journal Article
Mousa, S., Novak, V., Fletcher, R. S., Kelly, G., Garcia, M., Macleod, N., Parmenter, C., & Rigby, S. P. (2023). Evolution of the pore structure-transport relationship during catalyst reduction and sintering studied by integrated multi-scale porosimetry and multi-modal imaging. Chemical Engineering Science, 277, Article 118880. https://doi.org/10.1016/j.ces.2023.118880

Catalyst pellet fabrication parameters significantly impact final product performance. Tabletted pellets are complex, hierarchical structures that evolve differently over various levels during subsequent processing. Multi-scale porosimetry and multi-... Read More about Evolution of the pore structure-transport relationship during catalyst reduction and sintering studied by integrated multi-scale porosimetry and multi-modal imaging.

Additively Manufactured 3D Micro-bioelectrodes for Enhanced Bioelectrocatalytic Operation (2023)
Journal Article
Jodeiri, K., Foerster, A., Trindade, G. F., Im, J., Carballares, D., Fernández-Lafuente, R., Pita, M., De Lacey, A. L., Parmenter, C. D., & Tuck, C. (2023). Additively Manufactured 3D Micro-bioelectrodes for Enhanced Bioelectrocatalytic Operation. ACS Applied Materials and Interfaces, 15(11), 14914–14924. https://doi.org/10.1021/acsami.2c20262

The drive toward miniaturization of enzyme-based bioelectronics established a need for three-dimensional (3D) microstructured electrodes, which are difficult to implement using conventional manufacturing processes. Additive manufacturing coupled with... Read More about Additively Manufactured 3D Micro-bioelectrodes for Enhanced Bioelectrocatalytic Operation.

Exploring the microstructure of hydrated collagen hydrogels under scanning electron microscopy (2023)
Journal Article
Merryweather, D. J., Weston, N., Roe, J., Parmenter, C., Lewis, M. P., & Roach, P. (2023). Exploring the microstructure of hydrated collagen hydrogels under scanning electron microscopy. Journal of Microscopy, 290(1), 40-52. https://doi.org/10.1111/jmi.13174

Collagen hydrogels are a rapidly expanding platform in bioengineering and soft materials engineering for novel applications focused on medical therapeutics, medical devices and biosensors. Observations linking microstructure to material properties an... Read More about Exploring the microstructure of hydrated collagen hydrogels under scanning electron microscopy.

Strategies for Integrating Metal Nanoparticles with Two-Photon Polymerization Process: Toward High Resolution Functional Additive Manufacturing (2023)
Journal Article
Im, J., Liu, Y., Hu, Q., Trindade, G. F., Parmenter, C., Fay, M., He, Y., Irvine, D. J., Tuck, C., Wildman, R. D., Hague, R., & Turyanska, L. (2023). Strategies for Integrating Metal Nanoparticles with Two-Photon Polymerization Process: Toward High Resolution Functional Additive Manufacturing. Advanced Functional Materials, 33(39), Article 2211920. https://doi.org/10.1002/adfm.202211920

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.

Low-Power Sonication Can Alter Extracellular Vesicle Size and Properties (2021)
Journal Article
Nizamudeen, Z. A., Xerri, R., Parmenter, C., Suain, K., Markus, R., Chakrabarti, L., & Sottile, V. (2021). Low-Power Sonication Can Alter Extracellular Vesicle Size and Properties. Cells, 10(9), Article 2413. https://doi.org/10.3390/cells10092413

Low-power sonication is widely used to disaggregate extracellular vesicles (EVs) after isolation, however, the effects of sonication on EV samples beyond dispersion are unclear. The present study analysed the characteristics of EVs collected from mes... Read More about Low-Power Sonication Can Alter Extracellular Vesicle Size and Properties.

Kerogen nanoscale structure and CO2 adsorption in shale micropores (2021)
Journal Article
Gonciaruk, A., Hall, M. R., Fay, M. W., Parmenter, C. D. J., Vane, C. H., Khlobystov, A. N., & Ripepi, N. (2021). Kerogen nanoscale structure and CO2 adsorption in shale micropores. Scientific Reports, 11, Article 3920. https://doi.org/10.1038/s41598-021-83179-z

Gas storage and recovery processes in shales critically depend on nano-scale porosity and chemical composition, but information about the nanoscale pore geometry and connectivity of kerogen, insoluble organic shale matter, is largely unavailable. Usi... Read More about Kerogen nanoscale structure and CO2 adsorption in shale micropores.

Cryo-FIB-lift-out: practically impossible to practical reality (2020)
Journal Article
Parmenter, C. D., & Nizamudeen, Z. A. (2020). Cryo-FIB-lift-out: practically impossible to practical reality. Journal of Microscopy, https://doi.org/10.1111/jmi.12953

© 2020 The Authors. Journal of Microscopy published by John Wiley & Sons Ltd on behalf of Royal Microscopical Society In this paper, we explore the development of the Cryo-Lift-Out (cryo-LO) technique as preparation tool for cryogenic transmission... Read More about Cryo-FIB-lift-out: practically impossible to practical reality.

The antibiotic vancomycin induces complexation and aggregation of gastrointestinal and submaxillary mucins (2020)
Journal Article
Dinu, V., Lu, Y., Weston, N., Lithgo, R., Coupe, H., Channell, G., Adams, G. G., Torcello Gómez, A., Sabater Sanchez, C., Mackie, A., Parmenter, C., Fisk, I., Phillips-Jones, M. K., & Harding, S. E. (2020). The antibiotic vancomycin induces complexation and aggregation of gastrointestinal and submaxillary mucins. Scientific Reports, 10(1), Article 960. https://doi.org/10.1038/s41598-020-57776-3

© 2020, The Author(s). Vancomycin, a branched tricyclic glycosylated peptide antibiotic, is a last-line defence against serious infections caused by staphylococci, enterococci and other Gram-positive bacteria. Orally-administered vancomycin is the dr... Read More about The antibiotic vancomycin induces complexation and aggregation of gastrointestinal and submaxillary mucins.

Clean Block Copolymer Microparticles from Supercritical CO 2 : Universal Templates for the Facile and Scalable Fabrication of Hierarchical Mesostructured Metal Oxides (2018)
Journal Article
Bennett, T. M., He, G., Larder, R. R., Fischer, M. G., Rance, G. A., Fay, M. W., Pearce, A. K., Parmenter, C. D. J., Steiner, U., & Howdle, S. M. (2018). Clean Block Copolymer Microparticles from Supercritical CO 2 : Universal Templates for the Facile and Scalable Fabrication of Hierarchical Mesostructured Metal Oxides. Nano Letters, 18(12), 7560-7569. https://doi.org/10.1021/acs.nanolett.8b03044

© 2018 American Chemical Society. Metal oxide microparticles with well-defined internal mesostructures are promising materials for a variety of different applications, but practical routes to such materials that allow the constituent structural leng... Read More about Clean Block Copolymer Microparticles from Supercritical CO 2 : Universal Templates for the Facile and Scalable Fabrication of Hierarchical Mesostructured Metal Oxides.

Tunable pentapeptide self-assembled β-sheet hydrogels (2018)
Journal Article
Clarke, D. E., Parmenter, C. D. J., & Scherman, O. A. (in press). Tunable pentapeptide self-assembled β-sheet hydrogels. Angewandte Chemie International Edition, https://doi.org/10.1002/anie.201801001

Oligopeptide-based supramolecular hydrogels hold promise in a range of applications. The gelation of these systems is hard to control with minor alterations in the peptide sequence significantly influencing the self-assembly process. This makes seque... Read More about Tunable pentapeptide self-assembled β-sheet hydrogels.

Growth of single-layer boron nitride dome-shaped nanostructures catalysed by iron clusters (2016)
Journal Article
Torre, A. L., Åhlgren, E. H., Fay, M. W., Ben Romdhane, F., Skowron, S. T., Parmenter, C., Davies, A. J., Jouhannaud, J., Pourroy, G., Khlobystov, A. N., Brown, P. D., Besley, E., & Banhart, F. (2016). Growth of single-layer boron nitride dome-shaped nanostructures catalysed by iron clusters. Nanoscale, 8(32), 15079-15085. https://doi.org/10.1039/c6nr03474h

© 2016 The Royal Society of Chemistry. We report on the growth and formation of single-layer boron nitride dome-shaped nanostructures mediated by small iron clusters located on flakes of hexagonal boron nitride. The nanostructures were synthesized in... Read More about Growth of single-layer boron nitride dome-shaped nanostructures catalysed by iron clusters.

Multivariate analysis of 3D ToF-SIMS images: method validation and application to cultured neuronal networks (2015)
Journal Article
Van Nuffel, S., Parmenter, C. D., Scurr, D. J., Russell, N. A., & Zelzer, M. (in press). Multivariate analysis of 3D ToF-SIMS images: method validation and application to cultured neuronal networks. Analyst, 141(1), https://doi.org/10.1039/c5an01743b

Advanced data analysis tools are crucial for the application of ToF-SIMS analysis to biological samples. Here, we demonstrate that by using a training set approach principal components analysis (PCA) can be performed on large 3D ToF-SIMS images of ne... Read More about Multivariate analysis of 3D ToF-SIMS images: method validation and application to cultured neuronal networks.

Compositional and physicochemical factors governing the viability of Lactobacillus rhamnosus GG embedded in starch-protein based edible films (2015)
Journal Article
Parmenter, C., Soukoulis, C., Singh, P., Macnaughtan, W., Parmenter, C. D., & Fisk, I. D. (2016). Compositional and physicochemical factors governing the viability of Lactobacillus rhamnosus GG embedded in starch-protein based edible films. Food Hydrocolloids, 52, 876-887. https://doi.org/10.1016/j.foodhyd.2015.08.025

Probiotic incorporation in edible films and coatings has been shown recently to be an efficient strategy for the delivery of probiotics in foods. In the present work, the impact of the compositional, physicochemical and structural properties of binar... Read More about Compositional and physicochemical factors governing the viability of Lactobacillus rhamnosus GG embedded in starch-protein based edible films.

Biomaterial modification of urinary catheters with antimicrobials to give long-term broadspectrum antibiofilm activity (2015)
Journal Article
Fisher, L. E., Hook, A. L., Ashraf, W., Yousef, A., Barrett, D. A., Scurr, D. J., Chen, X., Smith, E. F., Fay, M., Parmenter, C. D., Parkinson, R., & Bayston, R. (2015). Biomaterial modification of urinary catheters with antimicrobials to give long-term broadspectrum antibiofilm activity. Journal of Controlled Release, 202, 57-64. https://doi.org/10.1016/j.jconrel.2015.01.037

© 2015 Published by Elsevier B.V. Catheter-associated urinary tract infection (CAUTI) is the commonest hospital-acquired infection, accounting for over 100,000 hospital admissions within the USA annually. Biomaterials and processes intended to reduce... Read More about Biomaterial modification of urinary catheters with antimicrobials to give long-term broadspectrum antibiofilm activity.

Combined hydrogels that switch human pluripotent stem cells from self-renewal to differentiation (2014)
Journal Article
Dixon, J. E., Shah, D. A., Rogers, C., Hall, S., Weston, N., Parmenter, C. D., McNally, D., Denning, C., & Shakesheff, K. M. (2014). Combined hydrogels that switch human pluripotent stem cells from self-renewal to differentiation. Proceedings of the National Academy of Sciences, 111(15), 5580-5585. https://doi.org/10.1073/pnas.1319685111

The ability of materials to define the architecture and microenvironment experienced by cells provides new opportunities to direct the fate of human pluripotent stem cells (HPSCs) [Robinton DA, Daley GQ (2012) Nature 481(7381):295-305]. However, the... Read More about Combined hydrogels that switch human pluripotent stem cells from self-renewal to differentiation.