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Browsing Centres Science and Engineering by Author "Bangert, Ursel"

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Browsing Centres Science and Engineering by Author "Bangert, Ursel"

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  • Moore, Kalani; Bangert, Ursel; Conroy, Michele A. (AIP Publishing, 2021)
    Ferroelectric domain wall (DW) based nano-electronics is an emerging new field of research. It is only recently with advancements in electron and atomic force microscopy instrumentation that the complex nature of these 2D ...
  • Guy, Joseph G. M.; Cochard, Charlotte; Aguado-Puente, Pablo; Soergel, Elisabeth; Whatmore, Roger W.; Conroy, Michele A.; Moore, Kalani; Courtney, Eileen; Harvey, Alan; Bangert, Ursel; Kumar, Amit; McQuaid, Raymond G. P.; Gregg, J. Marty (Wiley, 2021)
    During switching, the microstructure of a ferroelectric normally adapts to align internal dipoles with external electric fields. Favorably oriented dipolar regions (domains) grow at the expense of those in unfavorable ...
  • Moore, Kalani; Keeney, Lynette; Downing, Clive; Conroy, Michele A.; Bangert, Ursel (Cambridge University Press, 2020)
    Ferroelectric domain walls (DWs) are the subject of intense research at present in the search for high dielectric, gigahertz responsive materials with novel functionalities[1]. Crucial to the integration of DWs into ...
  • McConville, James P. V.; Lu, Haidong; Wang, Bo; Tan, Yueze; Cochard, Charlotte; Conroy, Michele A.; Moore, Kalani; Harvey, Alan; Bangert, Ursel; Chen, Long-Qing; Gruverman, Alexei; Gregg, J. Marty (Wiley_VCH Verlag, 2020)
    A domain wall-enabled memristor is created, in thin film lithium niobate capacitors, which shows up to twelve orders of magnitude variation in resistance. Such dramatic changes are caused by the injection of strongly ...
  • Doherty, Jessica; McNulty, David; Biswas, Subhajit; Moore, Kalani; Conroy, Michele A.; Bangert, Ursel; O'Dwyer, Colm; Holmes, Justin D. (IOP Publishing, 2020)
    The combination of two active Li-ion materials (Ge and Sn) can result in improved conduction paths and higher capacity retention. Here we report for the first time, the implementation of Ge1–xSnx alloy nanowires as anode ...
  • Moore, Kalani; Conroy, Michele A.; O'Connell, Eoghan N.; Cochard, Charlotte; Mackel, Jennifer; Harvey, Alan; Hooper, Thomas E.; Bell, Andrew J.; Gregg, J. Marty; Bangert, Ursel (Nature, 2020)
    Charged domain walls (DWs) in ferroelectric materials are an area of intense research. Microscale strain has been identified as a method of inducing arrays of twin walls to meet at right angles, forming needlepoint domains ...
  • Conroy, Michele A.; Moore, Kalani; Lehane, Rob; Gamero-Quijano, Alonso; Scanlon, Micheál D.; Bangert, Ursel (Cambridge University Press, 2020)
    Flexible electronics has been a field of intense research focus for the diverse and new class of applications not achievable by wafer-based electronics. [1-4] Polymers that are both conductive and stretchable have been put ...
  • Hardcastle, Trevor P.; Hage, Fredrik S.; Gjerding, Morten N.; Kepaptsoglou, Demie M.; Seabourne, Che R.; Winther, Kirsten T.; Zan, Recep; Amani, Julian Alexander; Hofsaess, Hans C.; Bangert, Ursel; Thygesen, Kristian S.; Ramasse, Quentin M. (ACS Publications, 2018)
    Single atom B or N substitutional doping in single-layer suspended graphene, realised by low energy ion implantation, is shown to induce a dampening or enhancement of the characteristic interband π plasmon of graphene ...
  • Courtney, Eileen; Conroy, Michele A.; Bangert, Ursel (Wiley and Sons Ltd, 2020)
    The behaviour of palladium & nickel deposited on mechanically exfoliated samples of 2D transition metal dichalcogenides (MoS2, WS2, and WSe2) via e-beam evaporation was investigated.Sputtering of metals on the flakes allowed ...
  • Hennessy, Michael; O'Connell, Eoghan; Rost, Stefan; Auge, Manuel; Moynihan, Eoin; Bui, Minh; Hofsaess, Hans C.; Kardynal, Beata; Bangert, Ursel (Cambridge University Press, 2020)
    Monolayer thick transition metal dichalcogenides (TMDCs) with the chemical formula MX2 (M=Mo, W; X=S, Se), constitute a new class of direct bandgap semiconductors. Their remarkable physical properties resulting from their ...
  • Cookman, Jennifer; Hamilton, V.; Hall, S. R.; Bangert, Ursel (Nature Research, 2020)
    Non‑classical crystallisation (NCC) pathways are widely accepted, however there is conflicting evidence regarding the intermediate stages of crystallisation, how they manifest and further develop into crystals. Evidence ...
  • Moynihan, Eoin; Rost, Stefan; O'Connell, Eoghan; Ramasse, Quentin M.; Friedrich, Christoph; Bangert, Ursel (Wiley and Sons Ltd, 2020)
    This paper takes a fundamental view of the electron energy loss spectra of monolayer and few layer MoS2. The dielectric function of monolayer MoS2 is compared to the experimental spectra to give clear criteria for the ...
  • Conroy, Michele A.; Moore, Kalani; O'Connell, Eoghan; Jones, Lewys; Downing, Clive; Whamore, Roger; Gruverman, Alexei; Gregg, Marty; Bangert, Ursel (Cambridge University Press, 2020)
    Dynamic charged ferroelectric domain walls (CDWs) overturn the classical idea that our electronic circuits need to consist of fixed components of hardware.[1,2] With their own unique electronic properties and exotic ...
  • Moore, Kalani; Conroy, Michele A.; Bangert, Ursel (Wiley and Sons Ltd, 2020)
    Summary Ferroelectric materials, and more specifically ferroelectric domain walls (DWs) have become an area of intense research in recent years. Novel physical phenomena have been discovered at these nanoscale topological ...
  • Cookman, Jennifer; Hamilton, Victoria; Hall, Simon; Bangert, Ursel (Cambridge University Press, 2020)
    Liquid phase electron microscopy has enabled the direct observation of liquid phase events that had previously been unexplored in situ at the nanoscale such as nanoparticle nucleation, electrochemical dynamics, catalysis ...
  • Bulushev, Dmitri A.; Zacharska, Monika; Lisitsyn, Alexander S.; Podyacheva, Olga Yu; Hage, Fredrik S.; Ramasse, Quentin M.; Bangert, Ursel; Bulusheva, Lyubov G. (American Chemical Society, 2016)
    Formic acid is a valuable chemical derived from biomass, as it has a high hydrogen-storage capacity and appears to be an attractive source of hydrogen for various applications. Hydrogen production via formic acid decomposition ...
  • Biswas, Subhajit; Doherty, Jessica; Galluccio, Emmanuele; Manning, Hugh G.; Conroy, Michele A.; Duffy, Ray; Bangert, Ursel; Boland, John J.; Holme, Justin D. (ACS, 2021)
    Ge1−xSnx nanowires incorporating a large amount of Sn would be useful for mobility enhancement in nanoelectronic devices, a definitive transition to a direct bandgap for application in optoelectronic devices and to increase ...
  • Cookman, Jennifer; Hamilton, Victoria; Price, Louise S.; Hall, Simon R.; Bangert, Ursel (Royal Society of Chemistry, 2020)
    Here, we show that the development of nuclei and subsequent growth of a molecular organic crystal system can be induced by electron beam irradiation by exploiting the radiation chemistry of the carrier solvent. The technique ...

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