Outputs (40)

High-temperature Brown-Zak oscillations in graphene/hBN moiré field effect transistor fabricated using molecular beam epitaxy (2024)
Journal Article
Makarovsky, O., Hill, R. J. A., Cheng, T. S., Summerfield, A., Taniguchi, T., Watanabe, K., Mellor, C. J., Patanè, A., Eaves, L., Novikov, S. V., & Beton, P. H. (2024). High-temperature Brown-Zak oscillations in graphene/hBN moiré field effect transistor fabricated using molecular beam epitaxy. Communications Materials, 5(1), Article 189. https://doi.org/10.1038/s43246-024-00633-x

Graphene placed on hexagonal boron nitride (hBN) has received significant interest due to its excellent electrical performance and physics phenomena, such as superlattice Dirac points. Direct molecular beam epitaxy growth of graphene on hBN offers an... Read More about High-temperature Brown-Zak oscillations in graphene/hBN moiré field effect transistor fabricated using molecular beam epitaxy.

Thin Ga2O3 Layers by Thermal Oxidation of van der Waals GaSe Nanostructures for Ultraviolet Photon Sensing (2024)
Journal Article
Cottam, N. D., Dewes, B. T., Shiffa, M., Cheng, T. S., Novikov, S. V., Mellor, C. J., Makarovsky, O., Gonzalez, D., Ben, T., & Patanè, A. (2024). Thin Ga2O3 Layers by Thermal Oxidation of van der Waals GaSe Nanostructures for Ultraviolet Photon Sensing. ACS Applied Nano Materials, 7(15), 17553-17560. https://doi.org/10.1021/acsanm.4c02685

Two-dimensional semiconductors (2DSEM) based on van der Waals crystals offer important avenues for nanotechnologies beyond the constraints of Moore's law and traditional semiconductors, such as silicon (Si). However, their application necessitates pr... Read More about Thin Ga2O3 Layers by Thermal Oxidation of van der Waals GaSe Nanostructures for Ultraviolet Photon Sensing.

Cathodoluminescence spectroscopy of monolayer hexagonal boron nitride (2024)
Journal Article
Shima, K., Cheng, T. S., Mellor, C. J., Beton, P. H., Elias, C., Valvin, P., Gil, B., Cassabois, G., Novikov, S. V., & Chichibu, S. F. (2024). Cathodoluminescence spectroscopy of monolayer hexagonal boron nitride. Scientific Reports, 14(1), Article 169. https://doi.org/10.1038/s41598-023-50502-9

Cathodoluminescence (CL) spectroscopy is a suitable technique for studying the luminescent properties of optoelectronic materials because CL has no limitation on the excitable bandgap energy and eliminates ambiguous signals due to simple light scatte... Read More about Cathodoluminescence spectroscopy of monolayer hexagonal boron nitride.

Wafer-Scale Two-Dimensional Semiconductors for Deep UV Sensing (2023)
Journal Article
Shiffa, M., Dewes, B. T., Bradford, J., Cottam, N. D., Cheng, T. S., Mellor, C. J., Makarovskiy, O., Rahman, K., O'Shea, J. N., Beton, P. H., Novikov, S. V., Ben, T., Gonzalez, D., Xie, J., Zhang, L., & Patanè, A. (2024). Wafer-Scale Two-Dimensional Semiconductors for Deep UV Sensing. Small, 20(7), Article 2305865. https://doi.org/10.1002/smll.202305865

2D semiconductors (2SEM) can transform many sectors, from information and communication technology to healthcare. To date, top‐down approaches to their fabrication, such as exfoliation of bulk crystals by “scotch‐tape,” are widely used, but have limi... Read More about Wafer-Scale Two-Dimensional Semiconductors for Deep UV Sensing.

Graphene nanoribbons with hBN passivated edges grown by high-temperature molecular beam epitaxy (2023)
Journal Article
Bradford, J., Cheng, T. S., James, T. S., Khlobystov, A. N., Mellor, C. J., Watanabe, K., Taniguchi, T., Novikov, S. V., & Beton, P. H. (2023). Graphene nanoribbons with hBN passivated edges grown by high-temperature molecular beam epitaxy. 2D Materials, 10(3), Article 035035. https://doi.org/10.1088/2053-1583/acdefc

Integration of graphene and hexagonal boron nitride (hBN) in lateral heterostructures has provided a route to broadly engineer the material properties by quantum confinement of electrons or introduction of novel electronic and magnetic states at the... Read More about Graphene nanoribbons with hBN passivated edges grown by high-temperature molecular beam epitaxy.

Optical Monitoring of In Situ Iron Loading into Single, Native Ferritin Proteins (2023)
Journal Article
Yousefi, A., Ying, C., Parmenter, C. D. J., Assadipapari, M., Sanderson, G., Zheng, Z., Xu, L., Zargarbashi, S., Hickman, G. J., Cousins, R. B., Mellor, C. J., Mayer, M., & Rahmani, M. (2023). Optical Monitoring of In Situ Iron Loading into Single, Native Ferritin Proteins. Nano Letters, 23(8), 3251-3258. https://doi.org/10.1021/acs.nanolett.3c00042

Ferritin is a protein that stores and releases iron to prevent diseases associated with iron dysregulation in plants, animals, and bacteria. The conversion between iron-loaded holo-ferritin and empty apo-ferritin is an important process for iron regu... Read More about Optical Monitoring of In Situ Iron Loading into Single, Native Ferritin Proteins.

Diffractive metasurface light-shaping from fiber endoscope probes for increased depth of field (2023)
Presentation / Conference Contribution
He, F., Gordon, G., Fuentes-Dominguez, R., Cousins, R., Mellor, C. J., Barton, J. . K., & Gordon, G. S. . D. Diffractive metasurface light-shaping from fiber endoscope probes for increased depth of field. Presented at Endoscopic Microscopy XVIII, San Francisco, USA

In applications such as optical coherence tomography, there is a need both to achieve large depth of field by light shaping and to maintain ultracompact form factors. Flat metasurfaces on optical fibers can achieve such requirements, with designs suc... Read More about Diffractive metasurface light-shaping from fiber endoscope probes for increased depth of field.

The influence of magnetic vortices motion on the inverse ac Josephson effect in asymmetric arrays (2022)
Journal Article
Chesca, B., Gaifullin, M., John, D., Cox, J., Savel'ev, S., & Mellor, C. (2022). The influence of magnetic vortices motion on the inverse ac Josephson effect in asymmetric arrays. Applied Physics Letters, 121(16), Article 162601. https://doi.org/10.1063/5.0121779

We report on the influence a preferential magnetic vortices motion has on the magnitude of the inverse ac Josephson effect (the appearance of dc current Shapiro steps) and the coherent operation of asymmetrical parallel arrays of YBa2Cu3O7−δ Josephso... Read More about The influence of magnetic vortices motion on the inverse ac Josephson effect in asymmetric arrays.

Reactive laser annealing of indium tin oxide: implications to crystal structure, defect composition, and plasma energy (2022)
Journal Article
Hillier, J., Patsalas, P., Karfardis, D., Cranton, W., Nabok, A., Mellor, C. J., Koutsogeorgis, D., & Kalfagiannis, N. (2022). Reactive laser annealing of indium tin oxide: implications to crystal structure, defect composition, and plasma energy. Optical Materials Express, 12(11), 4310-4327. https://doi.org/10.1364/ome.464918

The mechanisms governing the modification of the optoelectronic properties of low carrier concentration indium tin oxide (ITO) during reactive laser annealing (ReLaA) are investigated. ReLA combines the advantages of reactive ambient thermal annealin... Read More about Reactive laser annealing of indium tin oxide: implications to crystal structure, defect composition, and plasma energy.

Photo-engineered optoelectronic properties of indium tin oxide via reactive laser annealing (2022)
Journal Article
Hillier, J. A., Patsalas, P., Karfaridis, D., Camelio, S., Cranton, W., Nabok, A. V., Mellor, C. J., Koutsogeorgis, D. C., & Kalfagiannis, N. (2022). Photo-engineered optoelectronic properties of indium tin oxide via reactive laser annealing. Scientific Reports, 12, Article 14986. https://doi.org/10.1038/s41598-022-18883-5

Transparent conductive oxides are appealing materials for optoelectronic and plasmonic applications as, amongst other advantages, their properties can be modulated by engineering their defects. Optimisation of this adjustment is, however, a complex d... Read More about Photo-engineered optoelectronic properties of indium tin oxide via reactive laser annealing.