Physics: Recent submissions
Now showing items 381-400 of 2200
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Reactive Plasma N-Doping of Amorphous Carbon Electrodes: Decoupling Disorder and Chemical Effects on Capacitive and Electrocatalytic Performance
(2020)Nitrogen-free amorphous carbon thin films prepared via sputtering followed by graphitization, were used as precursor materials for the creation of N-doped carbon electrodes with varying degrees of amorphization. Incorporation ... -
Device for inductive heating and focusing of laser produced plasma
(2019)The design and implementation of a pulsed magnetic induction device used to heat and focus a laser produced plasma in vacuum is described. Imaging of the plasma light emission and optical spectroscopy show that the UV/visible ... -
Probing the Dynamics of Topologically Protected Charged Ferroelectric Domain Walls with the Electron Beam at the Atomic Scale
(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 ... -
Prospect for detecting magnetism of a single impurity atom using electron magnetic chiral dichroism
(American Physical Society, 2019)Dopants, even single atoms, can influence the electrical and magnetic properties of materials. Here we demonstrate the opportunity for detecting the magnetic response of an embedded magnetic impurity in a nonmagnetic host ... -
Metal Nanoparticle Film Deposition by Femtosecond Laser Ablation at Atmospheric Pressure
(2020)Nanoparticle gold films were deposited using femtosecond laser ablation in argon at atmospheric pressure in an arrangement where a flat Au target was irradiated through a transparent substrate in close proximity. Spatially ... -
Optical Transmitters based on High-Order Surface Grating Lasers for Applications in Communication Systems
(Trinity College Dublin. School of Physics. Discipline of Physics, 2021)Optical communication is the forefront of modern communication systems and is unarguably the leading technology for information sharing and transmission of large amounts of data over longer distances with low latency. Since ... -
Spectroscopic and Microscopic Characterisation of Liquid Phase Exfoliated 2D Materials
(Trinity College Dublin. School of Physics. Discipline of Physics, 2021)Since the experimental isolation of graphene nearly two decades ago, the research into two-dimensional materials has accelerated at a tremendous rate across a vast range of scientific and engineering fields. Liquid phase ... -
Liquid Exfoliated SnP<inf>3</inf> Nanosheets for Very High Areal Capacity Lithium-Ion Batteries
(2021)ncreasing the energy density of lithium‐ion batteries requires the discovery of new electrode materials capable of achieving very high areal capacity. Here, liquid phase exfoliation is used to produce nanosheets of SnP3, ... -
Liquid Phase Exfoliation of 2D Materials under Ambient Conditions
(Trinity College Dublin. School of Physics. Discipline of Physics, 2021)A technique developed by the Coleman group in 2008 called liquid phase exfoliation (LPE) has been shown to be effective for the delamination of any material exhibiting a layered structure. Molybdenum dioxide ... -
Analysis of the foam-forming of non-woven lightweight fibrous materials using X-ray tomography
(2021)Foam-forming has in the past predominantly been used to create two-dimensional sheet-like fibrous materials. Allowing the foam to drain freely and decay under gravity, rather than applying a vacuum to remove it rapidly, ... -
Imaging and identification of point defects in PtTe2
(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, ... -
Characterising and control of ammonia emission in microbial fuel cells
(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 ... -
Deformation and fracture of crystalline tungsten and fabrication of composite STM probes
(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), ... -
Low-Cost, High-Performance Spray Pyrolysis-Grown Amorphous Zinc Tin Oxide: The Challenge of a Complex Growth Process
(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 ... -
Solution-Based Deposition of Transparent Eu-Doped Titanium Oxide Thin Films for Potential Security Labeling and UV Screening
(2020)Transparent titanium oxide thin films attract enormous attention from the scientific community because of their prominent properties, such as low-cost, chemical stability, and optical transparency in the visible region. ... -
Atomic and Electronic Structure of a Multidomain GeTe Crystal
(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 ... -
Revealing electromigration on dielectrics and metals through the step-bunching instability
(2020)Electromigration, due to its technological and scientific significance, has been a subject of extensive studies for many years. We present evidence of electromigration in dielectric materials, namely C-plane sapphire, ... -
Efficient Resistive Switching and Spike Rate Dependent Plasticity in a New CuCrO2 Memristor for Plausible Neuromorphic Systems
(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 ... -
Constructive and destructive interference of Kerker-type scattering in an ultrathin silicon Huygens metasurface
(2020)High refractive index dielectric nanoparticles have provided a new platform for exotic light manipulation through the interference of multipole modes. The Kerker effect is one example of a Huygens source design. Rather ... -
Magnetoresistance of Nanoscale Domain Walls Formed in Arrays of Parallel Nanowires
(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 ...
