Browsing by Author "Shvets, Igor"
Now showing items 1-20 of 25
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Atomic and Electronic Structure of a Multidomain GeTe Crystal
Caffrey, David; Shvets, Igor (2020)Renewed interest in the ferroelectric semiconductor germanium telluride was recently triggered by the direct observation of a giant Rashba effect and a 30-year-old dream about a functional spin field-effect transistor. In ... -
Bending stability of Cu0.4CrO2 - A transparent p-type conducting oxide for large area flexible electronics
Fleischer, Karsten; Shvets, Igor; Caffrey, David; Mullarkey, Daragh; Norton, Emma; Zhussupbekova, A.; Papanastasiou, Dorina T.; Oser, D.; Bellet, D. (2018)The current best performing p-type transparent conducting oxides are typically highly crystalline materials, deposited at high temperatures, and hence incompatible with the drive to low cost flexible electronics. We ... -
Characterising and control of ammonia emission in microbial fuel cells
Shvets, Igor; Gounko, Iouri; Lyons, Michael; Xiao, Liwen; Li, Dunzhu (2020)The serious ammonia (NH3) emission of air-cathode microbial fuel cells (MFCs) was reported but how to control and mitigate the emission hasn’t been well studied. Considering the importance of the issue for the application ... -
Controlling the resistive switching hysteresis in VO2 thin films via application of pulsed voltage
Murtagh, Oisín; Shvets, Igor (2020)We investigate the origin of the variation in resistive switching hysteresis of VO2 thin films. Using pulsed electrical measurements in textured VO2 thin film devices, we show that the hysteresis observed in I–V curves ... -
Crystallographic Characterisation of Ultra-Thin, or Amorphous Transparent Conducting Oxides ? The Case for Raman Spectroscopy
Shvets, Igor; KAISHA, AITKAZY; ZHUSSUPBEKOVA, AINUR; AINABAYEV, ARDAK; Caffrey, David (2020)The electronic and optical properties of transparent conducting oxides (TCOs) are closely linked to their crystallographic structure on a macroscopic (grain sizes) and microscopic (bond structure) level. With the increasing ... -
Deformation and fracture of crystalline tungsten and fabrication of composite STM probes
Caffrey, David; Shvets, Igor (2020)Fracturing microscale constrictions in metallic wires, such as tungsten, platinum, or platinum-iridium, is a common fabrication method used to produce atomically sharp tips for scanning tunneling microscopy (STM), ... -
Efficient Resistive Switching and Spike Rate Dependent Plasticity in a New CuCrO2 Memristor for Plausible Neuromorphic Systems
Caffrey, David; Shvets, Igor (2020)In this work, we introduce a new class of p-type transparent conductive oxide (TCO) CuCrO2 (150 nm) heterogeneously integrated onto FTO/glass for forming free memristor based neuromorphic applications. The fabricated ... -
Electronic and structural characterisation of polycrystalline platinum disulfide thin films
Zhussupbekova, Ainur; Duesberg, Georg; Shvets, Igor (2020)We employ a combination of scanning tunnelling microscopy (STM) and scanning tunnelling spectroscopy (STS) to investigate the properties of layered PtS2, synthesised via thermally assisted conversion (TAC) of a metallic ... -
Growth of 1T′ MoTe2 by Thermally Assisted Conversion of Electrodeposited Tellurium Films
MC MANUS, JOHN BRENDAN; Mc Evoy, Niall; Duesberg, Georg; Shvets, Igor (2019)Molybdenum ditelluride (MoTe2) is a transition metal dichalcogenide (TMD) which has two phases stable under ambient conditions, a semiconducting (2H) and semimetallic (1T′) phase. Despite a host of interesting properties ... -
Imaging and identification of point defects in PtTe2
Zhussupbekova, Ainur; Duesberg, Georg; Shvets, Igor (2021)The properties and performance of two-dimensional (2D) materials can be greatly affected by point defects. PtTe2, a 2D material that belongs to the group 10 transition metal dichalcogenides, is a type-II Dirac semimetal, ... -
The influence of drinking water constituents on the level of microplastic release from plastic kettles
Shvets, Igor; Boland, John; Li, Dunzhu; Xiao, Liwen (2022)Microplastic (MP) release from household plastic products has become a global concern due to the high recorded levels of microplastic and the direct risk of human exposure. However, the most widely used MP measurement ... -
Investigation of coupled cobalt-silver nanoparticle system by plan view TEM
Shvets, Igor; Zhang, Hongzhou (2012) -
Low-Cost, High-Performance Spray Pyrolysis-Grown Amorphous Zinc Tin Oxide: The Challenge of a Complex Growth Process
Caffrey, David; Shvets, Igor (2020)Transparent conductive oxides (TCOs) are important materials for a wide range of optoelectronic devices. Amorphous zinc tin oxide (a-ZTO) is a TCO and one of the best nontoxic, low-cost replacements for more expensive ... -
Low-temperature synthesis and electrocatalytic application of large-area PtTe2thin films
Duesberg, Georg; Browne, Michelle; Shvets, Igor (2020)The synthesis of transition metal dichalcogenides (TMDs) has been a primary focus for 2D nanomaterial research over the last 10 years, however, only a small fraction of this research has been concentrated on transition ... -
Magneto-optic Kerr effect in a spin-polarized zero-moment ferrimagnet
Fleischer, Karsten; Coey, John; Rode, Karsten; Smith, Christopher; Shvets, Igor; Thiyagarajah, Naganivetha; Lau, Yong-Chang; Betto, Davide; Borisov, Kiril (2018)The magneto-optical Kerr effect (MOKE) is often assumed to be proportional to the magnetization of a magnetically ordered metallic sample; in metallic ferrimagnets with chemically distinct sublattices, such as rare-earth ... -
Magnetoresistance of Nanoscale Domain Walls Formed in Arrays of Parallel Nanowires
Shvets, Igor (2019)We present the possibility of enhancing magnetoresistance by controlling nanoscale domain wall (DW) width in a planar nanowire array. Results based on the micromagnetic calculations show that DW width decreases with ... -
Nanodomain structure of single crystalline nickel oxide
Shvets, Igor; Walls, B. (2021)In this work we present a comprehensive study of the domain structure of a nickel oxide single crystal grown by floating zone melting and suggest a correlation between point defects and the observed domain structure. The ... -
A photochemical approach for a fast and self-limited covalent modification of surface supported graphene with photoactive dyes.
Fleischer, Karsten; Walls, Brian; Shvets, Igor; Sergeeva, Natalia N.; Chaika, Alexander N.; Walls, Brian; Murphy, Barry E.; Walshe, Killian; Martin, David P.; Richards, Billy D.O.; Jose, Gin; Aristov, Victor Yu.; Molodstova, Olga; Krasnikov, Sergey A. (2018)Herein, we report a simple method for a covalent modification of surface supported graphene with photoactive dyes. Graphene was fabricated on cubic-SiC/Si(001) wafers due to their low cost and suitability for mass-production ... -
Real-world natural passivation phenomena can limit microplastic generation in water
Xiao, Liwen; Gounko, Iouri; Shvets, Igor; Moebius, Matthias; Li, Dunzhu; Boland, John (2022)Previous studies using Deionized (DI) water found that household plastic products used in food preparation and storage are a local and immediate source of extremely high quantities of microplastics (MPs) released ... -
Reflectance anisotropy spectroscopy of Fe3O4(110): Anisotropic strain
Fleischer, Karsten; Walls, Brian; Shvets, Igor; WALSHE, KILLIAN; Zhussupbekova, K.; Lübben, O/ (2018)We present a study of (110)-terminated magnetite using a range of surface-sensitive techniques, the foremost of those being reflectance anisotropy spectroscopy (RAS). The anisotropic optical response of the as-polished and ...