All Outputs (65)

Precision depth-controlled isolated silver nanoparticle-doped diamond-like carbon coatings with enhanced ion release, biocompatibility, and mechanical performance (2024)
Journal Article
Zia, A. W., Anestopoulos, I., Bowen, L., Panayiotidis, M. I., & Birkett, M. (2024). Precision depth-controlled isolated silver nanoparticle-doped diamond-like carbon coatings with enhanced ion release, biocompatibility, and mechanical performance. Surface and Coatings Technology, 493, Part 2, Article 131281. https://doi.org/10.1016/j.surfcoat.2024.131281

Silver doped diamond-like carbon (Ag/DLC) coatings are in high demand for biomedical applications such as artificial implants, surgical instruments, and medical devices. However, recent reports indicate that the excess Ag concentration required in ty... Read More about Precision depth-controlled isolated silver nanoparticle-doped diamond-like carbon coatings with enhanced ion release, biocompatibility, and mechanical performance.

Reactive DC Sputtered TiO 2 Electron Transport Layers for Cadmium‐Free Sb 2 Se 3 Solar Cells (2024)
Journal Article
Don, C. H., Shalvey, T. P., Sindi, D. A., Lewis, B., Swallow, J. E. N., Bowen, L., …Major, J. D. (2024). Reactive DC Sputtered TiO 2 Electron Transport Layers for Cadmium‐Free Sb 2 Se 3 Solar Cells. Advanced Energy Materials, Article 2401077. https://doi.org/10.1002/aenm.202401077

The evolution of Sb2Se3 heterojunction devices away from CdS electron transport layers (ETL) to wide bandgap metal oxide alternatives is a critical target in the development of this emerging photovoltaic material. Metal oxide ETL/Sb2Se3 device perfor... Read More about Reactive DC Sputtered TiO 2 Electron Transport Layers for Cadmium‐Free Sb 2 Se 3 Solar Cells.

Nanostructured Channel for Improving Emission Efficiency of Hybrid Light-Emitting Field-Effect Transistors (2023)
Journal Article
Galán-González, A., Pander, P., MacKenzie, R. C. I., Bowen, L., Zeze, D. A., Borthwick, R. J., …Chaudhry, M. U. (2023). Nanostructured Channel for Improving Emission Efficiency of Hybrid Light-Emitting Field-Effect Transistors. ACS Photonics, 10(12), 4315-4321. https://doi.org/10.1021/acsphotonics.3c01080

We report on the mechanism of enhancing the luminance and external quantum efficiency (EQE) by developing nanostructured channels in hybrid (organic/inorganic) light-emitting transistors (HLETs) that combine a solution-processed oxide and a polymer h... Read More about Nanostructured Channel for Improving Emission Efficiency of Hybrid Light-Emitting Field-Effect Transistors.

Enhanced Carrier Collection in Cd/In-Based Dual Buffers in Kesterite Thin-Film Solar Cells from Nanoparticle Inks (2023)
Journal Article
Campbell, S., Zoppi, G., Bowen, L., Maiello, P., Barrioz, V., Beattie, N. S., & Qu, Y. (in press). Enhanced Carrier Collection in Cd/In-Based Dual Buffers in Kesterite Thin-Film Solar Cells from Nanoparticle Inks. ACS Applied Energy Materials, 6(21), 10883-10896. https://doi.org/10.1021/acsaem.3c01622

Increasing the power conversion efficiency (PCE) of kesterite Cu2ZnSn­(S,Se)4 (CZTSSe) solar cells has remained challenging over the past decade, in part due to open-circuit voltage (V OC)-limiting defect states at the absorber/buffer interface. Prev... Read More about Enhanced Carrier Collection in Cd/In-Based Dual Buffers in Kesterite Thin-Film Solar Cells from Nanoparticle Inks.

Biocompatible Ti3Au–Ag/Cu thin film coatings with enhanced mechanical and antimicrobial functionality (2023)
Journal Article
Lukose, C. C., Anestopoulos, I., Panagiotidis, I., Zoppi, G., Black, A. M., Dover, L. G., …Birkett, M. (2023). Biocompatible Ti3Au–Ag/Cu thin film coatings with enhanced mechanical and antimicrobial functionality. Biomaterials Research, 27(1), Article 93. https://doi.org/10.1186/s40824-023-00435-1

Background
Biofilm formation on medical device surfaces is a persistent problem that shelters bacteria and encourages infections and implant rejection. One promising approach to tackle this problem is to coat the medical device with an antimicrobial... Read More about Biocompatible Ti3Au–Ag/Cu thin film coatings with enhanced mechanical and antimicrobial functionality.

Multi‐Phase Sputtered TiO2‐Induced Current–Voltage Distortion in Sb2Se3 Solar Cells (2023)
Journal Article
Don, C. H., Shalvey, T. P., Smiles, M. J., Thomas, L., Phillips, L. J., Hobson, T. D. C., …Major, J. D. (2023). Multi‐Phase Sputtered TiO2‐Induced Current–Voltage Distortion in Sb2Se3 Solar Cells. Advanced Materials Interfaces, 10(20), https://doi.org/10.1002/admi.202300238

Despite the recent success of CdS/Sb2Se3 heterojunction devices, cadmium toxicity, parasitic absorption from the relatively narrow CdS band gap (2.4 eV) and multiple reports of inter-diffusion at the interface forming Cd(S,Se) and Sb2(S,Se)3 phases,... Read More about Multi‐Phase Sputtered TiO2‐Induced Current–Voltage Distortion in Sb2Se3 Solar Cells.

Adatom controlled emergence of high hardness in biocompatible beta-Ti3Au intermetallic thin film surfaces (2023)
Journal Article
Lukose, C. C., Anestopoulos, I., Bowen, L., Panayiotidis, M. I., & Birkett, M. (2023). Adatom controlled emergence of high hardness in biocompatible beta-Ti3Au intermetallic thin film surfaces. Surfaces and Interfaces, 40, Article 103034. https://doi.org/10.1016/j.surfin.2023.103034

There is growing international interest in hard biocompatible thin film surface coatings to extend the lifetime of medical implants. Parameters of the physical vapour deposition technique can be utilized to fine tune the microstructure and resulting... Read More about Adatom controlled emergence of high hardness in biocompatible beta-Ti3Au intermetallic thin film surfaces.

Biomechanical characteristics of silver enriched diamond-like carbon coatings for medical applications (2023)
Journal Article
Zia, A. W., Anestopoulos, I., Panayiotidis, M. I., Bowen, L., & Birkett, M. (2023). Biomechanical characteristics of silver enriched diamond-like carbon coatings for medical applications. Journal of Alloys and Compounds, 958, Article 170473. https://doi.org/10.1016/j.jallcom.2023.170473

Silver enriched diamond-like carbon (Ag/DLC) coatings are gaining a reputation for medical applications as Ag doping improves the intrinsic biocompatibility and antimicrobial features of DLC, and higher Ag amounts improve its hemocompatibility and gr... Read More about Biomechanical characteristics of silver enriched diamond-like carbon coatings for medical applications.

Nanoindentation of Horn River Basin Shales: The Micromechanical Contrast Between Overburden and Reservoir Formations (2023)
Journal Article
Charlton, T., Rouainia, M., Aplin, A., Fisher, Q., & Bowen, L. (2023). Nanoindentation of Horn River Basin Shales: The Micromechanical Contrast Between Overburden and Reservoir Formations. Journal of Geophysical Research. Solid Earth, 128(3), Article e2022JB025957. https://doi.org/10.1029/2022jb025957

We present a micromechanical characterization of shales from the Horn River Basin, NW Canada. The shales have contrasting mineralogy and microstructures and play different geomechanical roles in the field: the sample set covers an unconventional gas... Read More about Nanoindentation of Horn River Basin Shales: The Micromechanical Contrast Between Overburden and Reservoir Formations.

Thermal activation of Ti(1-x)Au(x) thin films with enhanced hardness and biocompatibility (2022)
Journal Article
Lukose, C. C., Anestopoulos, I., Mantso, T., Bowen, L., Panayiotidis, M. I., & Birkett, M. (2022). Thermal activation of Ti(1-x)Au(x) thin films with enhanced hardness and biocompatibility. Bioactive Materials, 15, 426-445. https://doi.org/10.1016/j.bioactmat.2022.02.027

The lifetime of orthopaedic implants can be extended by coating the softer Ti6Al4V alloy with harder biocompatible thin films. In this work, thin films of Ti(1-x)Au(x) are grown on Ti6Al4V and glass substrates by magnetron sputtering in the entire x... Read More about Thermal activation of Ti(1-x)Au(x) thin films with enhanced hardness and biocompatibility.

A method for automatic shale porosity quantification using an Edge-Threshold Automatic Processing (ETAP) technique (2021)
Journal Article
Tian, S., Bowen, L., Liu, B., Zeng, F., Xue, H., Erastova, V., …Liu, J. (2021). A method for automatic shale porosity quantification using an Edge-Threshold Automatic Processing (ETAP) technique. Fuel, 304, Article 121319. https://doi.org/10.1016/j.fuel.2021.121319

Scanning electron microscopy (SEM) is one of the most prevalent methods used to image and quantify the pore size distribution of shale rock, critical in understanding unconventional petroleum systems and production. Generally, digital greyscale SEM i... Read More about A method for automatic shale porosity quantification using an Edge-Threshold Automatic Processing (ETAP) technique.

Microstructure and pore systems of shallow-buried fluvial mudstone caprocks in Zhanhua Depression, east China inferred from SEM and MICP (2021)
Journal Article
Li, Y., Zha, M., Song, R., Aplin, A. C., Bowen, L., Wang, X., & Zhang, Y. (2021). Microstructure and pore systems of shallow-buried fluvial mudstone caprocks in Zhanhua Depression, east China inferred from SEM and MICP. Marine and Petroleum Geology, 132, Article 105189. https://doi.org/10.1016/j.marpetgeo.2021.105189

Shallow-buried fluvial mudstones are of great significance as potential top seals for natural gas accumulations in the Zhanhua depression. Four samples were chosen to represent the range of fine-grained microfacies, from clay-rich to silt-rich to cem... Read More about Microstructure and pore systems of shallow-buried fluvial mudstone caprocks in Zhanhua Depression, east China inferred from SEM and MICP.

Effect of Short-Term Low-Temperature Austempering on the Microstructure and Abrasive Wear of Medium-Carbon Low-Alloy Steel (2021)
Journal Article
Luo, Q., Mei, H., Kitchen, M., Gao, Y., & Bowen, L. (2021). Effect of Short-Term Low-Temperature Austempering on the Microstructure and Abrasive Wear of Medium-Carbon Low-Alloy Steel. Metals and Materials International, 27(9), 3115-3131. https://doi.org/10.1007/s12540-020-00957-6

Nano-bainitic steels have attracted great attention for good wear resistance. In this research, a medium-carbon low-alloyed steel was austempered at a low temperature close to its martensite-start temperature for various times to obtain mixed microst... Read More about Effect of Short-Term Low-Temperature Austempering on the Microstructure and Abrasive Wear of Medium-Carbon Low-Alloy Steel.

Enhanced lifetime of Organic Photovoltaic diodes achieved by blending with PMMA: Impact of morphology and Donor:Acceptor combination (2020)
Journal Article
Nieto-Díaz, B. A., Pearson, C., Al-Busaidi, Z., Bowen, L., Petty, M. C., & Groves, C. (2021). Enhanced lifetime of Organic Photovoltaic diodes achieved by blending with PMMA: Impact of morphology and Donor:Acceptor combination. Solar Energy Materials and Solar Cells, 219, Article 110765. https://doi.org/10.1016/j.solmat.2020.110765

In order to realise the potential of organic photovoltaic devices (OPVs) to provide cheap, scalable access to renewable energy, it is necessary to improve their lifetime and cost of encapsulation. The aim of this work is to achieve these aims by blen... Read More about Enhanced lifetime of Organic Photovoltaic diodes achieved by blending with PMMA: Impact of morphology and Donor:Acceptor combination.

Microscopic Analysis of Interdiffusion and Void Formation in CdTe(1–x)Sex and CdTe Layers (2020)
Journal Article
Baines, T., Bowen, L., Mendis, B. G., & Major, J. D. (2020). Microscopic Analysis of Interdiffusion and Void Formation in CdTe(1–x)Sex and CdTe Layers. ACS Applied Materials and Interfaces, 12(34), 38070-38075. https://doi.org/10.1021/acsami.0c09381

The use of CdSe layers has recently emerged as a route to improving CdTe photovoltaics through the formation of a CdTe(1–x)Sex (CST) phase. However, the extent of the Se diffusion and the influence it has on the CdTe grain structure has not been wide... Read More about Microscopic Analysis of Interdiffusion and Void Formation in CdTe(1–x)Sex and CdTe Layers.

Bacterial nanotubes mediate bacterial growth on periodic nano-pillars (2020)
Journal Article
Cao, Y., Jana, S., Bowen, L., Liu, H., Jakubovics, N. S., & Chen, J. (2020). Bacterial nanotubes mediate bacterial growth on periodic nano-pillars. Soft Matter, 16(32), 7613-7623. https://doi.org/10.1039/d0sm00602e

Surface topography designed to achieve spatial segregation has shown promise in delaying bacterial attachment and biofilm growth. However, the underlying mechanisms linking surface topography to the inhibition of microbial attachment and growth still... Read More about Bacterial nanotubes mediate bacterial growth on periodic nano-pillars.

Cobalt-Doped ZnO Nanorods Coated with Nanoscale Metal-Organic Framework Shells for Water-Splitting Photoanodes (2020)
Journal Article
Galan Gonzalez, A., Sivan, A. K., Hernández Ferrer, J., Bowen, L., Di Mario, L., Martelli, F., …Atkinson, D. (2020). Cobalt-Doped ZnO Nanorods Coated with Nanoscale Metal-Organic Framework Shells for Water-Splitting Photoanodes. ACS Applied Nano Material, 3(8), 7781-7788. https://doi.org/10.1021/acsanm.0c01325

Developing highly efficient and stable photoelectrochemical (PEC) water splitting electrodes via inexpensive, liquid phase processing is one of the key challenges for the conversion of solar energy into hydrogen for sustainable energy production. ZnO... Read More about Cobalt-Doped ZnO Nanorods Coated with Nanoscale Metal-Organic Framework Shells for Water-Splitting Photoanodes.

Fully controllable silicon nanowire fabricated using optical lithography and orientation dependent oxidation (2020)
Journal Article
Ramadan, S., Bowen, L., Popescu, S., Fu, C., Kwa, K. K., & O'Neill, A. (2020). Fully controllable silicon nanowire fabricated using optical lithography and orientation dependent oxidation. Applied Surface Science, 523, Article 146516. https://doi.org/10.1016/j.apsusc.2020.146516

Silicon nanowires (SiNWs) exhibit unique electrical, thermal, and optical properties compared to bulk silicon which make them suitable for various device applications. To realize nanowires in real applications, large-scale and low-cost fabrication me... Read More about Fully controllable silicon nanowire fabricated using optical lithography and orientation dependent oxidation.

Isotype Heterojunction Solar Cells Using n-Type Sb2Se3 Thin Films (2020)
Journal Article
Hobson, T. D., Phillips, L. J., Hutter, O. S., Shiel, H., Swallow, J. E., Savory, C. N., …Major, J. D. (2020). Isotype Heterojunction Solar Cells Using n-Type Sb2Se3 Thin Films. Chemistry of Materials, 32(6), 2621-2630. https://doi.org/10.1021/acs.chemmater.0c00223

The carrier-type of the emerging photovoltaic Sb2Se3 was evaluated for both thin films and bulk crystals via a range of complementary techniques. X-ray photoelectron spectroscopy (XPS), hot probe, Hall effect, and surface photovoltage spectroscopy sh... Read More about Isotype Heterojunction Solar Cells Using n-Type Sb2Se3 Thin Films.

Vertical effective stress and temperature as controls of quartz cementation in sandstones: Evidence from North Sea fulmar and Gulf of Mexico Wilcox sandstones (2020)
Journal Article
Oye, O. J., Aplin, A. C., Jones, S. J., Gluyas, J. G., Bowen, L., Harwood, J., …Valley, J. W. (2020). Vertical effective stress and temperature as controls of quartz cementation in sandstones: Evidence from North Sea fulmar and Gulf of Mexico Wilcox sandstones. Marine and Petroleum Geology, 115, Article 104289. https://doi.org/10.1016/j.marpetgeo.2020.104289

We present quantitative petrographic data, high spatial resolution oxygen isotope analyses of quartz cement, basin modelling and a kinetic model for quartz precipitation for two Paleocene-Eocene Wilcox Group sandstones from Texas and two Jurassic Ful... Read More about Vertical effective stress and temperature as controls of quartz cementation in sandstones: Evidence from North Sea fulmar and Gulf of Mexico Wilcox sandstones.