Browsing by Author "FLEISCHER, KARSTEN"
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Manipulating and probing the growth of plasmonic nanoparticle arrays using light
BULFIN, BRENDAN; FLEISCHER, KARSTEN; USOV, VICTOR; MCGILP, JOHN; SHVETS, IGOR (2013)Highly ordered self-assembled silver nanoparticle (NP) arrays have been produced by glancing angle deposition on faceted c-plane Al2O3 templates. The NP shape can be tuned by changing the substrate temperature during ... -
Nitrogen grain-boundary passivation of In-doped ZnO transparent conducting oxide
FLEISCHER, KARSTEN; SHVETS, IGOR; CAFFREY, DAVID; Ali, D.; Butt, M.Z.; Coughlan, C. (2018)We have investigated the properties and conduction limitations of spray pyrolysis grown, low-cost transparent conducting oxide ZnO thin films doped with indium. We analyze the optical, electrical, and crystallographic ... -
Optical Anisotropy of SrTiO3(110) for Different Surface Terminations
SHVETS, IGOR; FLEISCHER, KARSTEN; WALLS, BRIAN; Kim, Sangsoo; Zhussupbekov, Kuanysh (2017)In this work we investigate the SrTiO3(110) surface by reflectance anisotropy spectroscopy (RAS) at varying preparation steps including ex situ wet etching, high temperature oxygen annealing, as well as in situ vacuum ... -
Optical characterisation of plasmonic nanostructures on planar substrates using second harmonic generation
MCGILP, JOHN; FLEISCHER, KARSTEN; SHVETS, IGOR (2015) -
Optical characterisation of plasmonic nanostructures on planar substrates using second?harmonic generation
SMITH, CHRISTOPHER; MCGILP, JOHN; SHVETS, IGOR; FLEISCHER, KARSTEN (2015) -
Optical reflectance anisotropy of buried Fe nanostructures on vicinal W(110)
MCGILP, JOHN; FLEISCHER, KARSTEN; SMITH, CHRISTOPHER (2007)The optical anisotropy of Au protected Fe layers grown on a vicinal W(110) surface has been investigated using reflectance anisotropy spectroscopy (RAS). Iron nanostripes formed at submonolayer coverage, as well as Fe ... -
Oxygen vacancy induced surface stabilization: (110) terminated magnetite
FLEISCHER, KARSTEN; SHVETS, IGOR; WALSHE, KILLIAN; WALLS, BRIAN (2016) -
Polarization conversion-based molecular sensing using anisotropic plasmonic metasurfaces
SHVETS, IGOR; FLEISCHER, KARSTEN (2016) -
Probing the out-of-plane optical response of plasmonic nanostructures using spectroscopic ellipsometry
SHVETS, IGOR; MCGILP, JOHN; FLEISCHER, KARSTEN; SMITH, CHRISTOPHER (2011)A simplified approach to investigate the out-of-plane response of plasmonic nanostructures using spectroscopic ellipsometry (SE) is presented. One-dimensional self-assembled arrays of Ag nanoparticles (NP?s) were grown on ... -
Raman spectra of p-type transparent semiconducting Cr<inf>2</inf>O<inf>3</inf>:Mg
SHVETS, IGOR; FLEISCHER, KARSTEN; CAFFREY, DAVID; FARRELL, LEO; NORTON, EMMA; MULLARKEY, DARAGH; ARCA, ELISABETTA (2015)Abstract We present an analysis of the Raman spectra of p-type transparent conducting Cr2O3:Mg grown by various techniques including spray pyrolysis, pulsed laser deposition, molecular beam epitaxy and reactive magnetron ... -
Reflectance anisotropy spectroscopy of magnetite (110) surfaces
MAUIT, OZHET; SMITH, CHRISTOPHER; FLEISCHER, KARSTEN; FARRELL, LEO; MCGILP, JOHN; SHVETS, IGOR (2014)Reflectance anisotropy spectroscopy (RAS) has been used to measure the optical anisotropies of bulk and thin-film Fe3O4(110) surfaces. The spectra indicate that small shifts in energy of the optical transitions, ... -
Self-assembled broadband plasmonic nanoparticle arrays for sensing applications
FLEISCHER, KARSTEN; SHVETS, IGOR (2012)Highly ordered noble metal nanoparticle (NP) arrays are produced using a glancing angle deposition on stepped substrates. The versatility of the technique is demonstrated by depositing different metals, resulting in shifts ... -
Spray pyrolysis growth of a high figure of merit, nano-crystalline, p-type transparent conducting material at low temperature
FLEISCHER, KARSTEN; FARRELL, LEO; SHVETS, IGOR; CAFFREY, DAVID; NORTON, EMMA; O'DOWD, BRENDAN (2015) -
Stability and capping of magnetite ultra-thin films
FLEISCHER, KARSTEN; MAUIT, OZHET; SHVETS, IGOR (2014)Ultrathin films of Fe3O4 have been grown epitaxially on nearly lattice matched MgO(001). The stability of 4 nm thick films in ambient air and under annealing in an oxygen atmosphere at 200◦C has been studied. By magneto ... -
Structure of Si(111)-In Nanowires Determined from the Midinfrared Optical Response
MCGILP, JOHN; FLEISCHER, KARSTEN (2009)The anisotropic optical response of Si(111)-(4?1)/(8?2)-In in the midinfrared, where ab initio studies predict significant changes in the band structure between competing models of this important quasi-1D system, has been ... -
Surface phonons of the Si(111):In-(4 x 1) and (8 x 2) phases
MCGILP, JOHN; FLEISCHER, KARSTEN (2007)The reversible phase transition of the Si(111):In-(4?1) surface has been studied using Raman spectroscopy and the symmetry, frequencies, and linewidths of the surface phonon modes have been determined. Dramatically different ... -
Surface plasmon on topological insulator/dielectric interface enhanced ZnO ultraviolet photoluminescence
SHVETS, IGOR; FLEISCHER, KARSTEN; WU, HAN-CHUN (2012)It has recently been predicted that the surface plasmons are allowed to exist on the interface between a topological insulator and vacuum. Surface plasmons can be employed to enhance the optical emission from various ... -
Synthesis of nanocrystalline Cu deficient CuCrO2 a high figure of merit p-type transparent semiconductor
FLEISCHER, KARSTEN; FARRELL, LEO; NORTON, EMMA; SHVETS, IGOR; CAFFREY, DAVID; SMITH, CHRISTOPHER (2016) -
Tuning the crystallographic, morphological, optical and electrical properties of ZnO:Al grown by spray pyrolysis
ARCA, ELISABETTA; SHVETS, IGOR; FLEISCHER, KARSTEN (Elsevier B.V., 2014)In this contribution the effect of different deposition conditions on the physical properties of ZnO:Al grown by spray pyrolysis is outlined. In particular, it will be shown that the solvent composition affects the ... -
Ultrathin magnetite in Fe3O4/MgO superlattices: Investigating the enhanced thin film magnetic moment
FLEISCHER, KARSTEN; ZHANG, HONGZHOU; MAUIT, OZHET; FOX, DANIEL; SMITH, CHRISTOPHER; SHVETS, IGOR; MULLARKEY, DARAGH (2017)