ORCID Profile
0000-0002-4566-1748
Current Organisations
RMIT University
,
Nolte Geoservices GmbH
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Publisher: American Chemical Society (ACS)
Date: 12-04-2021
Publisher: IOP Publishing
Date: 25-11-2023
Abstract: Two-dimensional (2D) ferroelectric materials are providing promising platforms for creating future nano- and opto-electronics. Here we propose new hybrid van der Waals heterostructures, in which the 2D ferroelectric material CuInP
Publisher: American Chemical Society (ACS)
Date: 27-08-2020
Publisher: IOP Publishing
Date: 30-10-2019
Publisher: Copernicus GmbH
Date: 04-08-2023
DOI: 10.5194/EGQSJ-72-163-2023
Abstract: Abstract. The study of geological archives of dust is of great relevance as they are directly linked to past atmospheric circulation and bear the potential to reconstruct dust provenance and flux relative to climate changes. Among the dust sinks, loess–palaeosol sequences (LPSs) represent the only continental and non-aquatic archives that are predominantly built up by dust deposits close to source areas, providing detailed information on Quaternary climatic and terrestrial environmental changes. Upper Pleistocene LPSs of western central Europe have been investigated in great detail showing their linkage to millennial-scale northern hemispheric climate oscillations, but comprehensive data on dust composition and potential source–sink relationships as well as inferred past atmospheric circulation patterns for this region are still fragmentary. Here, we present an integrative approach that systematically combines sedimentological, rock magnetic, and bulk geochemical data, as well as information on Sr and Nd isotope composition, enabling a synthetic interpretation of LPS formation. We focus on the Schwalbenberg RP1 profile in the Middle Rhine Valley in Germany and integrate our data into a robust age model that has recently been established based on high-resolution radiocarbon dating of earthworm calcite granules. We show that Schwalbenberg RP1 is sub ided into a lower section corresponding to late oxygen isotope stage 3 (OIS ∼ 40–30 ka) and an upper section dating into the Last Glacial Maximum (LGM ∼ 24–22 ka), separated by a major stratigraphic unconformity. Sedimentological proxies of wind dynamics (U ratio) and pedogenesis (finest clay) of the lower section attest to comparable and largely synchronous patterns of northern hemispheric climatic changes supporting the overall synchronicity of climatic changes in and around the North Atlantic region. The anisotropy of magnetic susceptibility (AMS) reveals a clear correlation between finer grain size and increasing AMS foliation within interstadials, possibly owing to continuous accumulation of dust during pedogenic phases. Such a clear negative correlation has so far not been described for any LPS on stadial–interstadial scales. Distinct shifts in several proxy data supported by changes in isotope composition (87Sr/86Sr and εNd) within the lower section are interpreted as changes in provenance and decreasing weathering simultaneously with an overall cooling and aridification towards the end of OIS 3 (after ∼ 35 ka) and enhanced wind activity with significant input of coarse-grained material recycled from local sources related to increased landscape instability (after ∼ 31.5 ka). We find that environmental conditions within the upper section, most likely dominated by local to regional environmental signals, significantly differ from those in the lower section. In addition, AMS-based reconstructions of near-surface wind trends may indicate the influence of north-easterly winds beside the overall dominance of westerlies. The integrative approach contributes to a more comprehensive understanding of LPS formation including changes in dust composition and associated circulation patterns during Quaternary climate changes.
Publisher: Wiley
Date: 24-08-2021
Abstract: Black phosphorus (BP) has emerged as an exciting 2D material for optics, photonics, and electronics. However, there are few studies on BP in terms of modulation and enhancement of their electronic and optical properties and their concurrent reactivity and hence reduction after exposure to the ambient environment. To resolve such challenges, creating inorganic–organic hybrid materials is a suitable approach that offers significant opportunities to enhance the utility of BP by combining them with an organic material which has a complementary set of properties. Herein, a hybrid‐layered BP material coupled with a low bandgap donor–acceptor organic semiconducting polymer, selenophene‐flanked diketopyrrolopyrrole with thienyl‐vinylene‐thienyl (PDPPSe–TVT) is reported, to broaden the optical absorption and tune the ambipolar field effect transistor characteristics. A highly sensitive, nongated broadband photodetection capability of the hybrid device with a detection range from UV–vis to near‐IR (280–1050 nm) and responsivities of up to 4.22 × 10 3 A W −1 in ambient conditions. In addition to improved photodetection, simultaneous enhancement in both hole (71%) and electron (91%) mobilities is achieved while protecting the sensitive BP material from rapid environmental degradation. The findings therefore report a breakthrough in enhancing the utility of BP as a light‐active material for versatile photonics and electronics applications without operating in an inert environment.
Publisher: American Chemical Society (ACS)
Date: 05-01-2021
Publisher: American Chemical Society (ACS)
Date: 24-04-2023
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D1NR06906C
Abstract: The ferroelectric material In
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9CP00424F
Abstract: The work function of the silicene/silver surface can be tuned via functionalisation, according to density-functional theory calculations.
Publisher: American Chemical Society (ACS)
Date: 02-05-2021
No related grants have been discovered for Patrick Taylor.