![Joseph Askey BSc MSc FHEA](https://profiles-cardiff.imgix.net/attachments/493?w=200&h=200&auto=format&crop=faces&fit=crop&q=90")
Trosolwyg
Ar hyn o bryd rwy'n gydymaith ymchwil sy'n astudio nanostrwythurau thermodrydanol a magnetig tri dimensiwn gyda Dr Sam Ladak.
Astudiais fy PhD ym Mhrifysgol Caerdydd (2018-2022) gan astudio technegau saernïo a nodweddu optegol aflinol a sut y gellir cymhwyso'r rhain i systemau biolegol magnetig ac artiffisial nanostrwythuredig, o dan oruchwyliaeth Dr Sam Ladak a'r Athro Wolfgang Langbein.
Derbyniais fy BSc (Anrh) mewn Ffiseg o Brifysgol Bryste yn 2017, a fy MSc mewn Ffiseg o Brifysgol Caerdydd yn 2018. Yn 2022, rwy'n Gymrawd yr Academi Addysg Uwch (FHEA), yn Gymrawd Cyswllt (AFHEA) yn flaenorol yn 2020.
Cyhoeddiad
2024
- Askey, J. et al. 2024. Direct visualization of domain wall pinning in sub-100 nm 3D magnetic nanowires with cross-sectional curvature †. Nanoscale 2024(38), pp. 17793-17803. (10.1039/d4nr02020k)
- Payne, L., Askey, J., Pitsios, I., Ladak, S. and Langbein, W. 2024. Isotropic sub-100nm direct laser writing using spherical reflector-enabled 4Pi excitation at 405nm wavelength. Presented at: SPIE Photonics Europe 2024, Strasbourg, France, 26-30 April 2024Proceedings 3D Printed Optics and Additive Photonic Manufacturing IV, Vol. 12995. SPIE pp. 3., (10.1117/12.3021957)
2023
- Askey, J. 2023. Exploiting two-photon direct laser writing for fabrication of 3D magnetic nanowires. PhD Thesis, Cardiff University.
2022
- Askey, J., Hunt, M., Langbein, W. and Ladak, S. 2022. Asymmetric dual Bloch point domain walls in cylindrical magnetic nanowires. APL Materials 10(7), article number: 71105. (10.1063/5.0089291)
2021
- Anderson, M., Askey, J., Eknath, G., Norman, M. and Sztranyovszky, Z. 2021. "The Research Group Teaching Model": PhD students as research group leaders, mentors, and role models. Presented at: Centre for Education Innovation Annual Learning & Teaching Conference 2021, 1-2 July 2021.
- May, A., Saccone, M., Van Den Berg, A., Askey, J., Hunt, M. and Ladak, S. 2021. Magnetic charge propagation upon a 3D artificial spin-ice. Nature Communications 12, article number: 3217. (10.1038/s41467-021-23480-7)
- Lewis, R., Roche, P., Askey, J., Sztranyovszky, Z., Eknath, G., Norman, M. and Anderson, M. 2021. The Online Research Group teaching model – ensuring authentic and robust remote learning for MSc students. Presented at: Cardiff University Learning and Teaching Conference 2021, Virtual, 1-2 July 2021.
2020
- Askey, J., Hunt, M. O., Langbein, W. and Ladak, S. 2020. Use of two-photon lithography with a negative resist and processing to realise cylindrical magnetic nanowires. Nanomaterials 10(3), article number: 429. (10.3390/nano10030429)
- Hunt, M. et al. 2020. Harnessing multi-photon absorption to produce three-dimensional magnetic structures at the nanoscale. Materials 13(3), article number: 761. (10.3390/ma13030761)
Cynadleddau
- Payne, L., Askey, J., Pitsios, I., Ladak, S. and Langbein, W. 2024. Isotropic sub-100nm direct laser writing using spherical reflector-enabled 4Pi excitation at 405nm wavelength. Presented at: SPIE Photonics Europe 2024, Strasbourg, France, 26-30 April 2024Proceedings 3D Printed Optics and Additive Photonic Manufacturing IV, Vol. 12995. SPIE pp. 3., (10.1117/12.3021957)
- Anderson, M., Askey, J., Eknath, G., Norman, M. and Sztranyovszky, Z. 2021. "The Research Group Teaching Model": PhD students as research group leaders, mentors, and role models. Presented at: Centre for Education Innovation Annual Learning & Teaching Conference 2021, 1-2 July 2021.
- Lewis, R., Roche, P., Askey, J., Sztranyovszky, Z., Eknath, G., Norman, M. and Anderson, M. 2021. The Online Research Group teaching model – ensuring authentic and robust remote learning for MSc students. Presented at: Cardiff University Learning and Teaching Conference 2021, Virtual, 1-2 July 2021.
Erthyglau
- Askey, J. et al. 2024. Direct visualization of domain wall pinning in sub-100 nm 3D magnetic nanowires with cross-sectional curvature †. Nanoscale 2024(38), pp. 17793-17803. (10.1039/d4nr02020k)
- Askey, J., Hunt, M., Langbein, W. and Ladak, S. 2022. Asymmetric dual Bloch point domain walls in cylindrical magnetic nanowires. APL Materials 10(7), article number: 71105. (10.1063/5.0089291)
- May, A., Saccone, M., Van Den Berg, A., Askey, J., Hunt, M. and Ladak, S. 2021. Magnetic charge propagation upon a 3D artificial spin-ice. Nature Communications 12, article number: 3217. (10.1038/s41467-021-23480-7)
- Askey, J., Hunt, M. O., Langbein, W. and Ladak, S. 2020. Use of two-photon lithography with a negative resist and processing to realise cylindrical magnetic nanowires. Nanomaterials 10(3), article number: 429. (10.3390/nano10030429)
- Hunt, M. et al. 2020. Harnessing multi-photon absorption to produce three-dimensional magnetic structures at the nanoscale. Materials 13(3), article number: 761. (10.3390/ma13030761)
Gosodiad
- Askey, J. 2023. Exploiting two-photon direct laser writing for fabrication of 3D magnetic nanowires. PhD Thesis, Cardiff University.
Ymchwil
Ar hyn o bryd mae fy ngwaith yn canolbwyntio ar:
- Systemau magnetig 3D nanostrwythuredig gan gynnwys nanowires a nanowires crwm.
- Technegau optegol aflinol ar gyfer ffugio a nodweddu polymerau a nanostructures magnetig.
- Opteg aflinol ar gyfer gwella maint nodwedd a datrys mewn lithograffeg dau ffoton.
- Electrocemeg a'i gymhwysiad i wneuthuriad nanostrucutre magnetig.
- Efelychiadau micro-magnetig o systemau nanostrwythuredig.
Yn benodol, rwy'n defnyddio'r technegau canlynol yn fy ymchwil:
- Lithograffeg dau lun.
- Effaith Kerr magneto-optegol (MOKE) magnetometreg.
- Electrochemical a dyddodiad electroless.
- Microsgopeg electronau sganio (SEM).
- Modelu micro-magnetig gwahaniaeth cyfyngedig (MuMax3, Ubermag).
- Lithograffeg UV.
Cyhoeddiadau
- Hunt, M.; Taverne, M.; Askey, J.; Mai, a.; Van Den Berg, A.; Ho, Y.L.D.; Rarity, J.; Ladak, S. harneisio amsugno aml-ffoton i gynhyrchu strwythurau magnetig tri dimensiwn ar y nanoraddfa. Deunyddiau 2020, 13, 761.
- Askey, J.; Hunt, M.O.; Langbein, W.; Ladak, s. defnyddio lithograffi dau ffoton gyda gwrthsefyll a phrosesu negyddol i wireddu nanowires magnetig silindrog. Nanoddeunyddiau 2020, 10, 429.
- Askey, J.; Hunt, M.O.; Langbein, W.; Ladak, s. defnyddio lithograffi dau ffoton gyda gwrthsefyll a phrosesu negyddol i wireddu nanowires magnetig silindrog. Cynhadledd Flynyddol 65ain ar Magnetedd a Deunyddiau Magnetig 2020.
- Mai, a.; Saccone, M.; van den Berg, A.; Askey, J.; Hunt, M.; Ladak, S. Lluosogiad tâl magnetig ar sbin-iâ artiffisial 3D. Nat Commun 12, 3217 (2021).
- Lewis, R.; Roche, P.; Anderson, M.; Askey, J.; Athikkat-Eknath, G.; Norman, M.; Sztranyovszky, Z. Model Addysgu y Grŵp Ymchwil Ar-lein: Sicrhau dysgu o bell dilys a chadarn i fyfyrwyr MSc. Cynhadledd Dysgu ac Addysgu Prifysgol Caerdydd 2021.
- Anderson, M.; Askey, J.; Athikkat-Eknath, G.; Norman, M.; Sztranyovszky, Z. "Model Addysgu y Grŵp Ymchwil": Myfyrwyr PhD fel Arweinwyr Grwpiau Ymchwil, Mentoriaid, a Modelau Rôl. Cynhadledd Dysgu ac Addysgu Prifysgol Caerdydd 2021.
Addysgu
Rwy'n dylunio ac yn arwain grwpiau micro-brosiect, sesiynau llawn, a gweithdai sgiliau sy'n cael eu gyrru gan alw ar gyfer modiwlau Ffiseg ac Astroffiseg. Mae'r modiwlau hyn yn cynnwys:
- PXT991 (PXT101/201 gynt) - Technegau Arbrofol Uwch mewn Ffiseg (2018-2023)
- PXT992 (PXT102/202 gynt) - Sgiliau Astudio ac Ymchwil mewn Ffiseg (2018-2023)
- PXT103 - Rhaglennu Uwch LabVIEW ar gyfer Ffisegwyr (2018-2020)
Contact Details
Themâu ymchwil
Arbenigeddau
- Nanomagnetedd 3D