Search Results - "Rossouw, David"
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1
Mixed-quantum-dot solar cells
Published in Nature communications (06-11-2017)“…Colloidal quantum dots are emerging solution-processed materials for large-scale and low-cost photovoltaics. The recent advent of quantum dot inks has overcome…”
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2
Mapping Bright and Dark Modes in Gold Nanoparticle Chains using Electron Energy Loss Spectroscopy
Published in Nano letters (09-07-2014)“…We present a scanning transmission electron microscopy–electron energy loss spectroscopy (STEM-EELS) investigation of gold nanosphere chains with lengths…”
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3
Self-Similarity of Plasmon Edge Modes on Koch Fractal Antennas
Published in ACS nano (28-11-2017)“…We investigate the plasmonic behavior of Koch snowflake fractal geometries and their possible application as broadband optical antennas. Lithographically…”
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Silver Nanorice Structures: Oriented Attachment-Dominated Growth, High Environmental Sensitivity, and Real-Space Visualization of Multipolar Resonances
Published in Chemistry of materials (26-06-2012)“…We have synthesized and investigated the anisotropic growth of interesting silver nanorice. Its growth is kinetically controlled at 100 °C, and both oriented…”
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Multicomponent Signal Unmixing from Nanoheterostructures: Overcoming the Traditional Challenges of Nanoscale X‑ray Analysis via Machine Learning
Published in Nano letters (08-04-2015)“…The chemical composition of core–shell nanoparticle clusters have been determined through principal component analysis (PCA) and independent component analysis…”
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6
Nanoscale analysis of structural and chemical changes in aged hybrid Pt/NbO x /C fuel cell catalysts
Published in Journal of power sources (01-07-2017)Get full text
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7
Mapping defects in a carbon nanotube by momentum transfer dependent electron energy loss spectromicroscopy
Published in Ultramicroscopy (01-02-2012)“…Momentum resolved electron energy loss (EELS) spectra of multi-walled carbon nanotubes (MWCNT) have been measured at the C 1s edge in a transmission electron…”
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Plasmonic response of bent silver nanowires for nanophotonic subwavelength waveguiding
Published in Physical review letters (08-02-2013)“…We have imaged, with electron energy loss spectroscopy, the plasmonic response of straight and bent silver nanowires for their potential use in nanophotonic…”
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9
Tunable Syngas Production from CO2 and H2O in an Aqueous Photoelectrochemical Cell
Published in Angewandte Chemie International Edition (07-11-2016)“…Syngas, the mixture of CO and H2, is a key feedstock to produce methanol and liquid fuels in industry, yet limited success has been made to develop clean…”
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10
Excitation dependent Fano-like interference effects in plasmonic silver nanorods
Published in Physical review. B, Condensed matter and materials physics (10-10-2014)Get full text
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11
Multivariate-aided mapping of rare-earth partitioning in a wrought magnesium alloy
Published in Scripta materialia (01-11-2016)“…The formability of wrought magnesium alloys can be dramatically improved by the addition of trace rare-earth elements, which can weaken the recrystallized…”
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12
Nanoscale analysis of structural and chemical changes in aged hybrid Pt/NbOx/C fuel cell catalysts
Published in Journal of power sources (2017)“…We characterize the structural and chemical changes that take place in an electrochemically tested proton-exchange fuel cell cathode material composed of…”
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13
Resonant optical excitations in complementary plasmonic nanostructures
Published in Optics express (26-03-2012)“…We compare the plasmonic response of two complementary structures to a scanning electron probe; a silver nanowire and a nanoslot in a silver film of comparable…”
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14
Electron Energy Loss Spectroscopy Investigation into Symmetry in Gold Trimer and Tetramer Plasmonic Nanoparticle Structures
Published in ACS nano (27-09-2016)“…We present a combined scanning transmission electron microscopy–electron energy loss spectroscopy (STEM–EELS) investigation into the mode symmetries of…”
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15
Experimental evidence of nanometer-scale confinement of plasmonic eigenmodes responsible for hot spots in random metallic films
Published in Physical review. B, Condensed matter and materials physics (23-09-2013)“…We report on the identification and nanometer scale characterization over a large energy range of random, disorder-driven, surface plasmons in silver…”
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16
Targeting low-cost type-II heterostructures: Synthesis, structure and photoreactivity
Published in Journal of alloys and compounds (25-03-2017)“…One design strategy by which to iterate the photocatalytic efficiency of semiconducting nanomaterials for harvesting solar energy involves the synthesis of…”
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Asymmetric Silver “Nanocarrot” Structures: Solution Synthesis and Their Asymmetric Plasmonic Resonances
Published in Journal of the American Chemical Society (03-07-2013)“…Here we report the wet-chemical synthesis of asymmetric one-dimensional (1D) silver “nanocarrot” structures that exhibit mixed twins and stacking fault domains…”
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18
Tunable Syngas Production from CO 2 and H 2 O in an Aqueous Photoelectrochemical Cell
Published in Angewandte Chemie International Edition (07-11-2016)“…Syngas, the mixture of CO and H , is a key feedstock to produce methanol and liquid fuels in industry, yet limited success has been made to develop clean…”
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19
The 3D Nanoscale Evolution of Platinum–Niobium Oxide Fuel Cell Catalysts via Identical Location Electron Tomography
Published in Particle & particle systems characterization (01-07-2017)“…Current state‐of‐the‐art catalysts for polymer electrolyte membrane fuel cells, comprised of platinum nanoparticles on a high surface area carbon support, are…”
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20
Blind source separation aided characterization of the γ′ strengthening phase in an advanced nickel-based superalloy by spectroscopic 4D electron microscopy
Published in Acta materialia (01-04-2016)“…The γ′ strengthening phase in an advanced nickel-based superalloy, ATI 718Plus, was characterized using a blind source separation applied to a four dimensional…”
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