Kevin Ryan

Professor

 
researcher

Biography

Professor  Kevin M. Ryan obtained his PhD in Chemistry from University College Cork in 2002 . Following his PhD, he worked as an Enterprise Ireland postdoctoral fellow at UCC before taking up a 2 year Marie Curie Industrial host fellowship at Merck Chemicals Ltd. Southampton in their Nanotechnologies New Business division in 2003. He subsequently carried out a Marie Curie Outgoing fellowship at the University of California, Berkeley in 2005/2006 working on semiconductor nanorod synthesis and superlattice assembly. Currently his lab and group are based at the Bernal Institute, University of Limerick.                         www.ifnano.com for full group description

Research Interests

                      

Keywords: Colloidal Nanocrystals, Nanorods, Nanowires, Silicon, Germanium, Cadmium Sulphide, Cadmium Selenide, Copper Indium Gallium Sulphide/selenide (CIGS), Dicopper-zinc-tin-tetrasulphide (CZTS), Nanorod Assembly, Electrophoretic Assembly, Charge based Assembly, Thin-films, Photoabsorbers, Lithium ion batteries.

The group research interests are in: [1] Colloidal Nanocrystals with particular emphasis on Semiconductor Nanorods and their device scale assembly by directed (Electric fields ) or non-directed for scaleable applications in photovoltaics.   The group has pioneered routes whereby the nanorods can be assembled from solution such that each rod is Vertically Aligned and Close packed  (-allowing the formation of a forest of nanoscale photo absorbers directly from solution). As the semiconductors are pot synthesized and processed from solution (-similar to an ink) they offer a low cost protocol to thin-film devices. The group has recently extended the nanorod synthesis and assembly protocols to copper indium gallium sulfide/selenide (CIGS) and dicopper-zinc-tin-tetrasulphide (CZTS). These materials are attractive for their high efficiencies in thin-film devices and CZTS in particular is viewed as an attractive long term solution for low cost photovoltaics as all the elements are in high natural abundance. Funding for this work is through a Science Foundation Ireland Principal Investigator Award and through the SFI Strategic Research Cluster in Solar Energy Conversion.

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[2] Low cost solution synthesis of silicon and germanium nanowires by seeded and non-seeded strategies particularly targeted towards generating wires in high yield. We have developed a novel synthetic protocol that allows the growth of group 14 nanowires in the vapor phase of high boiling point solvents in glass ware based apparatus allowing high purity nanowires to be formed either with or without catalysts . Recently we have used indium and tin catalysts for form high density arrays of silicon and germanium wires on substrates and have extended the syntheses to metal silicide structures. Control over nanowire length for the formation of nanorods was achieved by a modification of this synthesis protocol. Investigation of nanowires of germanium as anodes for Lithium ion batteries is funded through the European Union GREENLION project with a consortium of 14 partners including large car manufactures such as SEAT and Volkswagen. The investigation of non-seeded nanowires for ICT is funded through an SFI Principal Investigator grant with industry support from Intel Ireland. For additional information see featured posts and full publication listings.Home

                      

Peer Reviewed Journals

  Year Publication
2017 'Solution synthesis of lead seeded germanium nanowires and branched nanowire networks and their application as Li-ion battery anodes'
Flynn, G,Palaniappan, K,Sheehan, M,Kennedy, T,Ryan, KM (2017) 'Solution synthesis of lead seeded germanium nanowires and branched nanowire networks and their application as Li-ion battery anodes'. Nanotechnology, 28 [DOI] [ULIR Link] [Details]
2017 'Temperature controlled shape evolution of iron oxide nanostructures in HMTA media'
Zhao, B,Ryan, KM,O'Reilly, E,McCarthy, C (2017) 'Temperature controlled shape evolution of iron oxide nanostructures in HMTA media'. Rsc Advances, 7 :26328-26334 [DOI] [ULIR Link] [Details]
2017 'The selective synthesis of nickel germanide nanowires and nickel germanide seeded germanium nanowires within a solvent vapour growth system'
Sheehan, M,Guo, YN,Flynn, G,Geaney, H,Ryan, KM (2017) 'The selective synthesis of nickel germanide nanowires and nickel germanide seeded germanium nanowires within a solvent vapour growth system'. Crystengcomm, 19 :2072-2078 [DOI] [Details]
2017 'Assembling Ordered Nanorod Superstructures and Their Application as Microcavity Lasers'
Liu, P,Singh, S,Guo, YN,Wang, JJ,Xu, HX,Silien, C,Liu, N,Ryan, KM (2017) 'Assembling Ordered Nanorod Superstructures and Their Application as Microcavity Lasers'. Scientific Reports, 7 [DOI] [ULIR Link] [Details]
2017 'Behavior of Germanium and Silicon Nanowire Anodes with Ionic Liquid Electrolytes'
Kim, GT,Kennedy, T,Brandon, M,Geaney, H,Ryan, KM,Passerini, S,Appetecchi, GB (2017) 'Behavior of Germanium and Silicon Nanowire Anodes with Ionic Liquid Electrolytes'. Acs Nano, 11 :5933-5943 [DOI] [Details]
2017 'Insight into the Role of Additives in Controlling Polymorphic Outcome: A CO2-Antisolvent Crystallization Process of Carbamazepine'
Padrela, L,Zeglinski, J,Ryan, KM (2017) 'Insight into the Role of Additives in Controlling Polymorphic Outcome: A CO2-Antisolvent Crystallization Process of Carbamazepine'. Crystal Growth & Design, 17 :4544-4553 [DOI] [ULIR Link] [Details]
2017 'Direct Synthesis of Alloyed Si1-xGex Nanowires for Performance-Tunable Lithium Ion Battery Anodes'
Stokes, K,Geaney, H,Flynn, G,Sheehan, M,Kennedy, T,Ryan, KM (2017) 'Direct Synthesis of Alloyed Si1-xGex Nanowires for Performance-Tunable Lithium Ion Battery Anodes'. Acs Nano, 11 :10088-10096 [DOI] [Details]
2017 'Understanding the influence of electrolyte additives on the electrochemical performance and morphology evolution of silicon nanowire based lithium-ion battery anodes'
Kennedy, T,Brandon, M,Laffir, F,Ryan, KM (2017) 'Understanding the influence of electrolyte additives on the electrochemical performance and morphology evolution of silicon nanowire based lithium-ion battery anodes'. Journal Of Power Sources, 359 :601-610 [DOI] [Details]
2016 'Heteroaggregation assisted wet synthesis of core-shell silver-silica-cadmium selenide nanowires'
Pita, IA,Singh, S,Silien, C,Ryan, KM,Liu, N (2016) 'Heteroaggregation assisted wet synthesis of core-shell silver-silica-cadmium selenide nanowires'. Nanoscale, 8 :1200-1209 [DOI] [Details]
2016 'Complete assembly of Cu2ZnSnS4 (CZTS) nanorods at substrate interfaces using a combination of self and directed organisation'
Liu, P,Singh, S,Bree, G,Ryan, KM (2016) 'Complete assembly of Cu2ZnSnS4 (CZTS) nanorods at substrate interfaces using a combination of self and directed organisation'. Chemical Communications, 52 :11587-11590 [DOI] [Details]
2016 'Formation of reworkable nanocomposite adhesives by dielectric heating of epoxy resin embedded Fe3O4 hollow spheres'
Zhao, B,Hardiman, M,Ryan, KM,O'Reilly, E,McCarthy, C (2016) 'Formation of reworkable nanocomposite adhesives by dielectric heating of epoxy resin embedded Fe3O4 hollow spheres'. Crystengcomm, 18 :6096-6101 [DOI] [ULIR Link] [Details]
2016 'Selective Phase Transformation of Wurtzite Cu2ZnSn(SSe)(4) (CZTSSe) Nanocrystals into Zinc-Blende and Kesterite Phases by Solution and Solid State Transformations'
Singh, S,Brandon, M,Liu, P,Laffir, F,Redington, W,Ryan, KM (2016) 'Selective Phase Transformation of Wurtzite Cu2ZnSn(SSe)(4) (CZTSSe) Nanocrystals into Zinc-Blende and Kesterite Phases by Solution and Solid State Transformations'. Chemistry Of Materials, 28 :5055-5062 [DOI] [Details]
2016 'Advances in the Application of Silicon and Germanium Nanowires for High-Performance Lithium-Ion Batteries'
Kennedy, T,Brandon, M,Ryan, KM (2016) 'Advances in the Application of Silicon and Germanium Nanowires for High-Performance Lithium-Ion Batteries'. Advanced Materials, 28 :5696-5704 [DOI] [Details]
2016 'Colloidal synthesis of Cu2SnSe3 nanocrystals with structure induced shape evolution'
Wang, JJ,Ryan, KM (2016) 'Colloidal synthesis of Cu2SnSe3 nanocrystals with structure induced shape evolution'. Crystengcomm, 18 :3161-3169 [DOI] [Details]
2016 'Solvent Vapor Growth of Axial Heterostructure Nanowires with Multiple Alternating Segments of Silicon and Germanium'
Flynn, G,Ramasse, QM,Ryan, KM (2016) 'Solvent Vapor Growth of Axial Heterostructure Nanowires with Multiple Alternating Segments of Silicon and Germanium'. Nano Letters, 16 :374-380 [DOI] [ULIR Link] [Details]
2015 'Synthesis of silicon-germanium axial nanowire heterostructures in a solvent vapor growth system using indium and tin catalysts'
Mullane, E,Geaney, H,Ryan, KM (2015) 'Synthesis of silicon-germanium axial nanowire heterostructures in a solvent vapor growth system using indium and tin catalysts'. Physical chemistry chemical physics : PCCP, 17 :6919-6924 [DOI] [ULIR Link] [Details]
2015 'Occurrence of Polytypism in Compound Colloidal Metal Chalcogenide Nanocrystals, Opportunities, and Challenges'
Singh, S,Ryan, KM (2015) 'Occurrence of Polytypism in Compound Colloidal Metal Chalcogenide Nanocrystals, Opportunities, and Challenges'. Journal Of Physical Chemistry Letters, 6 :3141-3148 [DOI] [Details]
2015 'A facile phosphine-free colloidal synthesis of Cu2SnS3 and Cu2ZnSnS4 nanorods with a controllable aspect ratio'
Wang, JJ,Liu, P,Ryan, KM (2015) 'A facile phosphine-free colloidal synthesis of Cu2SnS3 and Cu2ZnSnS4 nanorods with a controllable aspect ratio'. Chemical Communications, 51 :13810-13813 [DOI] [Details]
2015 'Complete study of the composition and shape evolution in the synthesis of Cu2ZnSnS4 (CZTS) semiconductor nanocrystals'
Coughlan, C,Ryan, KM (2015) 'Complete study of the composition and shape evolution in the synthesis of Cu2ZnSnS4 (CZTS) semiconductor nanocrystals'. Crystengcomm, 17 :6914-6922 [DOI] [ULIR Link] [Details]
2015 'Insights into the Electrophoretic Deposition of Colloidal II-VI Nanorods: Optimization for Vertically and Horizontally Aligned Assemblies'
Gill, E,Liu, P,Ryan, KM (2015) 'Insights into the Electrophoretic Deposition of Colloidal II-VI Nanorods: Optimization for Vertically and Horizontally Aligned Assemblies'. Journal Of The Electrochemical Society, 162 :3019-3024 [DOI] [Details]
2015 'Colloidal Cu2ZnSn(SSe)(4) (CZTSSe) Nanocrystals: Shape and Crystal Phase Control to Form Dots, Arrows, Ellipsoids, and Rods'
Singh, S,Liu, P,Singh, A,Coughlan, C,Wang, JJ,Lusi, M,Ryan, KM (2015) 'Colloidal Cu2ZnSn(SSe)(4) (CZTSSe) Nanocrystals: Shape and Crystal Phase Control to Form Dots, Arrows, Ellipsoids, and Rods'. Chemistry Of Materials, 27 :4742-4748 [DOI] [Details]
2015 'High density and patternable growth of silicon, germanium and alloyed SiGe nanowires by a rapid anneal protocol'
Bezuidenhout, M,Kennedy, T,Belochapkine, S,Guo, Y,Mullane, E,Kiely, PA,Ryan, KM (2015) 'High density and patternable growth of silicon, germanium and alloyed SiGe nanowires by a rapid anneal protocol'. Journal Of Materials Chemistry C, 3 :7455-7462 [DOI] [Details]
2015 'Pd Clusters Supported on Amorphous, Low-Porosity Carbon Spheres for Hydrogen Production from Formic Acid'
Bulushev, DA,Bulusheva, LG,Beloshapkin, S,O'Connor, T,Okotrub, AV,Ryan, KM (2015) 'Pd Clusters Supported on Amorphous, Low-Porosity Carbon Spheres for Hydrogen Production from Formic Acid'. ACS Applied Materials & Interfaces, 7 :8719-8726 [DOI] [Details]
2015 'Nanowire Heterostructures Comprising Germanium Stems and Silicon Branches as High-Capacity Li-Ion Anodes with Tunable Rate Capability'
Kennedy, T,Bezuidenhout, M,Palaniappan, K,Stokes, K,Brandon, M,Ryan, KM (2015) 'Nanowire Heterostructures Comprising Germanium Stems and Silicon Branches as High-Capacity Li-Ion Anodes with Tunable Rate Capability'. Acs Nano, 9 :7456-7465 [DOI] [Details]
2015 'Solution Synthesis and Assembly of Wurtzite-Derived Cu-In-Zn-S Nanorods with Tunable Composition and Band Gap'
Singh, A,Coughlan, C,Milliron, DJ,Ryan, KM (2015) 'Solution Synthesis and Assembly of Wurtzite-Derived Cu-In-Zn-S Nanorods with Tunable Composition and Band Gap'. Chemistry Of Materials, 27 :1517-1523 [DOI] [Details]
2014 'A Rapid, Solvent-Free Protocol for the Synthesis of Germanium Nanowire Lithium-Ion Anodes with a Long Cycle Life and High Rate Capability'
Mullane, E,Kennedy, T,Geaney, H,Ryan, KM (2014) 'A Rapid, Solvent-Free Protocol for the Synthesis of Germanium Nanowire Lithium-Ion Anodes with a Long Cycle Life and High Rate Capability'. ACS Applied Materials & Interfaces, 6 :18800-18807 [DOI] [Details]
2014 'Promoting cell proliferation using water dispersible germanium nanowires'
Bezuidenhout M, Liu P, Singh S, Kiely M, Ryan KM, Kiely PA (2014) 'Promoting cell proliferation using water dispersible germanium nanowires'. Plos One, 9 (9) [DOI] [ULIR Link] [Details]
2014 'Phase-transition-driven growth of compound semiconductor crystals from ordered metastable nanorods'
Mainz, R,Singh, A,Levcenko, S,Klaus, M,Genzel, C,Ryan, KM,Unold, T (2014) 'Phase-transition-driven growth of compound semiconductor crystals from ordered metastable nanorods'. Nature Communications, 5 [DOI] [ULIR Link] [Details]
2014 'High-Performance Germanium Nanowire-Based Lithium-Ion Battery Anodes Extending over 1000 Cycles Through in Situ Formation of a Continuous Porous Network'
Kennedy, T,Mullane, E,Geaney, H,Osiak, M,O'Dwyer, C,Ryan, KM (2014) 'High-Performance Germanium Nanowire-Based Lithium-Ion Battery Anodes Extending over 1000 Cycles Through in Situ Formation of a Continuous Porous Network'. Nano Letters, 14 :716-723 [DOI] [ULIR Link] [Details]
2014 'Complete Colloidal Synthesis of Cu2SnSe3 Nanocrystals with Crystal Phase and Shape Control'
Wang, JJ,Liu, P,Seaton, CC,Ryan, KM (2014) 'Complete Colloidal Synthesis of Cu2SnSe3 Nanocrystals with Crystal Phase and Shape Control'. Journal of the American Chemical Society, 136 :7954-7960 [DOI] [Details]
2014 'Assembly of binary, ternary and quaternary compound semiconductor nanorods: From local to device scale ordering influenced by surface charge'
Ryan, KM,Singh, S,Liu, P,Singh, A (2014) 'Assembly of binary, ternary and quaternary compound semiconductor nanorods: From local to device scale ordering influenced by surface charge'. Crystengcomm, 16 :9446-9454 [DOI] [ULIR Link] [Details]
2013 'Epitaxial growth of visible to infra-red transparent conducting In2O3 nanodot dispersions and reversible charge storage as a Li-ion battery anode'
Osiak, M,Khunsin, W,Armstrong, E,Kennedy, T,Torres, CMS,Ryan, KM,O'Dwyer, C (2013) 'Epitaxial growth of visible to infra-red transparent conducting In2O3 nanodot dispersions and reversible charge storage as a Li-ion battery anode'. Nanotechnology, 24 [DOI] [ULIR Link] [Details]
2013 'Fabrication of Noble metal-semiconductor hybrid nanostructures using phase transfer'
Bala, T,Singh, A,Sanyal, A,O'Sullivan, C,Laffir, F,Coughlan, C,Ryan, KM (2013) 'Fabrication of Noble metal-semiconductor hybrid nanostructures using phase transfer'. Nano Research, 6 :121-130 [DOI] [Details]
2013 'Highly Ordered Nanorod Assemblies Extending over Device Scale Areas and in Controlled Multilayers by Electrophoretic Deposition'
Singh, A,English, NJ,Ryan, KM (2013) 'Highly Ordered Nanorod Assemblies Extending over Device Scale Areas and in Controlled Multilayers by Electrophoretic Deposition'. Journal Of Physical Chemistry B, 117 :1608-1615 [DOI] [Details]
2013 'Systematic Study into the Synthesis and Shape Development in Colloidal CuInxGa1-xS2 Nanocrystals'
Coughlan, C,Singh, A,Ryan, KM (2013) 'Systematic Study into the Synthesis and Shape Development in Colloidal CuInxGa1-xS2 Nanocrystals'. Chemistry Of Materials, 25 :653-661 [DOI] [Details]
2013 'Atomically Abrupt Silicon-Germanium Axial Heterostructure Nanowires Synthesized in a Solvent Vapor Growth System'
Geaney, H,Mullane, E,Ramasse, QM,Ryan, KM (2013) 'Atomically Abrupt Silicon-Germanium Axial Heterostructure Nanowires Synthesized in a Solvent Vapor Growth System'. Nano Letters, 13 :1675-1680 [DOI] [Details]
2013 'Synthesis of Tin Catalyzed Silicon and Germanium Nanowires in a Solvent-Vapor System and Optimization of the Seed/Nanowire Interface for Dual Lithium Cycling'
Mullane, E,Kennedy, T,Geaney, H,Dickinson, C,Ryan, KM (2013) 'Synthesis of Tin Catalyzed Silicon and Germanium Nanowires in a Solvent-Vapor System and Optimization of the Seed/Nanowire Interface for Dual Lithium Cycling'. Chemistry Of Materials, 25 :1816-1822 [DOI] [Details]
2013 'Colloidal Synthesis of Cu2SnSe3 Tetrapod Nanocrystals'
Wang, JJ,Singh, A,Liu, P,Singh, S,Coughlan, C,Guo, YN,Ryan, KM (2013) 'Colloidal Synthesis of Cu2SnSe3 Tetrapod Nanocrystals'. Journal Of The American Chemical Society, 135 :7835-7838 [DOI] [Details]
2013 'Solution phase synthesis of silicon and germanium nanowires'
Geaney, H,Mullane, E,Ryan, KM (2013) 'Solution phase synthesis of silicon and germanium nanowires'. Journal Of Materials Chemistry C, 1 :4996-5007 [DOI] [Details]
2013 'Core-Shell Tin Oxide, Indium Oxide, and Indium Tin Oxide Nanoparticles on Silicon with Tunable Dispersion: Electrochemical and Structural Characteristics as a Hybrid Li-Ion Battery Anode'
Osiak, MJ,Armstrong, E,Kennedy, T,Torres, CMS,Ryan, KM,O'Dwyer, C (2013) 'Core-Shell Tin Oxide, Indium Oxide, and Indium Tin Oxide Nanoparticles on Silicon with Tunable Dispersion: Electrochemical and Structural Characteristics as a Hybrid Li-Ion Battery Anode'. ACS Applied Materials & Interfaces, 5 :8195-8202 [DOI] [Details]
2013 'Compositionally Tunable Photoluminescence Emission in Cu2ZnSn(S1-xSex)(4) Nanocrystals'
Singh, A,Singh, S,Levcenko, S,Unold, T,Laffir, F,Ryan, KM (2013) 'Compositionally Tunable Photoluminescence Emission in Cu2ZnSn(S1-xSex)(4) Nanocrystals'. Angewandte Chemie-International Edition, 52 :9120-9124 [DOI] [Details]
2013 'Colloidal synthesis of homogeneously alloyed CdSexS1-x nanorods with compositionally tunable photoluminescence'
Singh, S,Singh, A,Palaniappan, K,Ryan, KM (2013) 'Colloidal synthesis of homogeneously alloyed CdSexS1-x nanorods with compositionally tunable photoluminescence'. Chemical Communications, 49 :10293-10295 [DOI] [Details]
2013 'Crystallization of Semiconductor Nanorods into Perfectly Faceted Hexagonal Superstructures'
Singh, A,Ryan, KM (2013) 'Crystallization of Semiconductor Nanorods into Perfectly Faceted Hexagonal Superstructures'. Particle & Particle Systems Characterization, 30 :624-629 [DOI] [Details]
2012 'Assembly of CuIn1-xGaxS2 Nanorods into Highly Ordered 2D and 3D Superstructures'
Singh, A,Coughlan, C,Laffir, F,Ryan, KM (2012) 'Assembly of CuIn1-xGaxS2 Nanorods into Highly Ordered 2D and 3D Superstructures'. Acs Nano, 6 :6977-6983 [DOI] [Details]
2012 'Growth of Crystalline Copper Silicide Nanowires in High Yield within a High Boiling Point Solvent System'
Geaney, H,Dickinson, C,O'Dwyer, C,Mullane, E,Singh, A,Ryan, KM (2012) 'Growth of Crystalline Copper Silicide Nanowires in High Yield within a High Boiling Point Solvent System'. Chemistry Of Materials, 24 :4319-4325 [DOI] [ULIR Link] [Details]
2012 'High Density Growth of Indium seeded Silicon Nanowires in the Vapor phase of a High Boiling Point Solvent'
Geaney, H,Kennedy, T,Dickinson, C,Mullane, E,Singh, A,Laffir, F,Ryan, KM (2012) 'High Density Growth of Indium seeded Silicon Nanowires in the Vapor phase of a High Boiling Point Solvent'. Chemistry Of Materials, 24 :2204-2210 [DOI] [Details]
2012 'Size controlled growth of germanium nanorods and nanowires by solution pyrolysis directly on a substrate'
Mullane, E,Geaney, H,Ryan, KM (2012) 'Size controlled growth of germanium nanorods and nanowires by solution pyrolysis directly on a substrate'. Chemical Communications, 48 :5446-5448 [DOI] [Details]
2012 'Insight into the 3D Architecture and Quasicrystal Symmetry of Multilayer Nanorod Assemblies from Moire Interference Patterns'
Singh, A,Dickinson, C,Ryan, KM (2012) 'Insight into the 3D Architecture and Quasicrystal Symmetry of Multilayer Nanorod Assemblies from Moire Interference Patterns'. Acs Nano, 6 :3339-3345 [DOI] [Details]
2012 'Colloidal Synthesis of Wurtzite Cu2ZnSnS4 Nanorods and Their Perpendicular Assembly'
Singh, A,Geaney, H,Laffir, F,Ryan, KM (2012) 'Colloidal Synthesis of Wurtzite Cu2ZnSnS4 Nanorods and Their Perpendicular Assembly'. Journal Of The American Chemical Society, 134 :2910-2913 [DOI] [ULIR Link] [Details]
2012 'Controlled semiconductor nanorod assembly from solution: influence of concentration, charge and solvent nature'
Singh, A; Gunning, RD; Ahmed, S; Barrett, CA; English, NJ; Garate, JA; Ryan, KM (2012) 'Controlled semiconductor nanorod assembly from solution: influence of concentration, charge and solvent nature'. Journal Of Materials Chemistry, 22 :1562-1569 [DOI] [ULIR Link] [Details]
2011 'Complete Synthesis of Germanium Nanocrystal Encrusted Carbon Colloids in Supercritical CO2 and their Superhydrophobic Properties'
Barrett, CA; Singh, A; Murphy, JA; O'Sullivan, C; Buckley, DN; Ryan, KM (2011) 'Complete Synthesis of Germanium Nanocrystal Encrusted Carbon Colloids in Supercritical CO2 and their Superhydrophobic Properties'. Langmuir, 27 :11166-11173 [DOI] [Details]
2011 'Perpendicular growth of catalyst-free germanium nanowire arrays'
Barrett, CA; Geaney, H; Gunning, RD; Laffir, FR; Ryan, KM (2011) 'Perpendicular growth of catalyst-free germanium nanowire arrays'. CHEMICAL COMMUNICATIONS, 47 (13):3843-3845 [DOI] [Details]
2011 'Protein immobilisation on perpendicularly aligned gold tipped nanorod assemblies'
O'Sullivan, C; Crilly, S; Laffir, FR; Singh, A; Magner, E; Ryan, KM (2011) 'Protein immobilisation on perpendicularly aligned gold tipped nanorod assemblies'. CHEMICAL COMMUNICATIONS, 47 (9):2655-2657 [DOI] [Details]
2011 'Role of Defects and Growth Directions in the Formation of Periodically Twinned and Kinked Unseeded Germanium Nanowires'
Geaney, H; Dickinson, C; Weng, WH; Kiely, CJ; Barrett, CA; Gunning, RD; Ryan, KM (2011) 'Role of Defects and Growth Directions in the Formation of Periodically Twinned and Kinked Unseeded Germanium Nanowires'. CRYSTAL GROWTH & DESIGN, 11 (7):3266-3272 [DOI] [Details]
2011 'Silver tip formation on colloidal CdSe nanorods by a facile phase transfer protocol'
Bala, T; Sanyal, A; Singh, A; Kelly, D; O'Sullivan, C; Laffir, F; Ryan, KM (2011) 'Silver tip formation on colloidal CdSe nanorods by a facile phase transfer protocol'. JOURNAL OF MATERIALS CHEMISTRY, 21 (19):6815-6820 [DOI] [Details]
2011 'An ac susceptibility study in capped Ni/Ni(OH)(2) core-shell nanoassemblies: dual peak observations'
Godsell, JF; Bala, T; Ryan, KM; Roy, S (2011) 'An ac susceptibility study in capped Ni/Ni(OH)(2) core-shell nanoassemblies: dual peak observations'. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 44 (32) [DOI] [ULIR Link] [Details]
2011 'Electrophoretic Deposition of Poly(3-decylthiophene) onto Gold-Mounted Cadmium Selenide Nanorods'
Garate, JA; English, NJ; Singh, A; Ryan, KM; Mooney, DA; MacElroy, JMD (2011) 'Electrophoretic Deposition of Poly(3-decylthiophene) onto Gold-Mounted Cadmium Selenide Nanorods'. Langmuir, 27 :13506-13513 [DOI] [Details]
2011 'A facile spin-cast route for cation exchange of multilayer perpendicularly-aligned nanorod assemblies'
Kelly, D; Singh, A; Barrett, CA; O'Sullivan, C; Coughlan, C; Laffir, FR; O'Dwyer, C; Ryan, KM (2011) 'A facile spin-cast route for cation exchange of multilayer perpendicularly-aligned nanorod assemblies'. Nanoscale, 3 :4580-4583 [DOI] [Details]
2011 'High Density Germanium Nanowire Growth Directly from Copper Foil by Self-Induced Solid Seeding'
Geaney, H; Dickinson, C; Barrett, CA; Ryan, KM (2011) 'High Density Germanium Nanowire Growth Directly from Copper Foil by Self-Induced Solid Seeding'. Chemistry Of Materials, 23 :4838-4843 [DOI] [Details]
2010 'The Role of Texturing and Densification on Optical Transmittance of Hydroxyapatite Ceramics'
Gandhi, AA; Gunning, RD; Ryan, KM; Tofail, SAM (2010) 'The Role of Texturing and Densification on Optical Transmittance of Hydroxyapatite Ceramics'. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 93 (11):3773-3777 [DOI] [Details]
2010 'Metal surface nucleated supercritical fluid-solid-solid growth of Si and Ge/SiO(x) core-shell nanowires'
Barrett, CA; Gunning, RD; Hantschel, T; Arstila, K; O'Sullivan, C; Geaney, H; Ryan, KM (2010) 'Metal surface nucleated supercritical fluid-solid-solid growth of Si and Ge/SiO(x) core-shell nanowires'. JOURNAL OF MATERIALS CHEMISTRY, 20 (1):135-144 [DOI] [Details]
2010 'Size controlled gold tip growth onto II-VI nanorods'
O'Sullivan, C; Gunning, RD; Barrett, CA; Singh, A; Ryan, KM (2010) 'Size controlled gold tip growth onto II-VI nanorods'. JOURNAL OF MATERIALS CHEMISTRY, 20 (36):7875-7880 [DOI] [Details]
2010 'A multi-rate kinetic model for spontaneous oriented attachment of CdS nanorods'
Gunning, RD; O'Sullivan, C; Ryan, KM (2010) 'A multi-rate kinetic model for spontaneous oriented attachment of CdS nanorods'. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 12 (39):12430-12435 [DOI] [Details]
2010 'Directing semiconductor nanorod assembly into 1D or 2D supercrystals by altering the surface charge'
Singh, A; Gunning, RD; Sanyal, A; Ryan, KM (2010) 'Directing semiconductor nanorod assembly into 1D or 2D supercrystals by altering the surface charge'. CHEMICAL COMMUNICATIONS, 46 (38):7193-7195 [DOI] [Details]
2009 'Centimetre scale assembly of vertically aligned and close packed semiconductor nanorods from solution'
Ahmed, S; Ryan, KM (2009) 'Centimetre scale assembly of vertically aligned and close packed semiconductor nanorods from solution'. CHEMICAL COMMUNICATIONS, (42):6421-6423 [DOI] [Details]
2009 'Spontaneous Room Temperature Elongation of CdS and Ag(2)S Nanorods via Oriented Attachment'
O'Sullivan, C; Gunning, RD; Sanyal, A; Barrett, CA; Geaney, H; Laffir, FR; Ahmed, S; Ryan, KM (2009) 'Spontaneous Room Temperature Elongation of CdS and Ag(2)S Nanorods via Oriented Attachment'. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 131 (34):12250-12257 [DOI] [Details]
2009 'Block copolymer mediated stabilization of sub-5 nm superparamagnetic nickel nanoparticles in an aqueous medium'
Bala, T; Gunning, RD; Venkatesan, M; Godsell, JF; Roy, S; Ryan, KM (2009) 'Block copolymer mediated stabilization of sub-5 nm superparamagnetic nickel nanoparticles in an aqueous medium'. NANOTECHNOLOGY, 20 (41) [DOI] [Details]
2009 'The evolution of pseudo-spherical silicon nanocrystals to tetrahedra, mediated by phosphonic acid surfactants'
Barrett, CA; Dickinson, C; Ahmed, S; Hantschel, T; Arstila, K; Ryan, KM (2009) 'The evolution of pseudo-spherical silicon nanocrystals to tetrahedra, mediated by phosphonic acid surfactants'. NANOTECHNOLOGY, 20 (27) [DOI] [Details]
2009 'Water dispersible semiconductor nanorod assemblies via a facile phase transfer and their application as fluorescent biomarkers'
Sanyal, A; Bala, T; Ahmed, S; Singh, A; Piterina, AV; McGloughlin, TM; Laffir, FR; Ryan, KM (2009) 'Water dispersible semiconductor nanorod assemblies via a facile phase transfer and their application as fluorescent biomarkers'. JOURNAL OF MATERIALS CHEMISTRY, 19 (47):8974-8981 [DOI] [Details]
2008 'Close-Packed Gold-Nanocrystal Assemblies Deposited with Complete Selectivity into Lithographic Trenches'
Ahmed, S; Ryan, KM (2008) 'Close-Packed Gold-Nanocrystal Assemblies Deposited with Complete Selectivity into Lithographic Trenches'. ADVANCED MATERIALS, 20 (24):4745-+ [DOI] [Details]
2008 'Gold tip formation on perpendicularly aligned semiconductor nanorod assemblies'
O'Sullivan, C; Ahmed, S; Ryan, KM (2008) 'Gold tip formation on perpendicularly aligned semiconductor nanorod assemblies'. JOURNAL OF MATERIALS CHEMISTRY, 18 (43):5218-5222 [DOI] [Details]
2007 'Self-assembly of vertically aligned nanorod supercrystals using highly oriented pyrolytic graphite'
Ahmed, S; Ryan, KM (2007) 'Self-assembly of vertically aligned nanorod supercrystals using highly oriented pyrolytic graphite'. NANO LETTERS, 7 (8):2480-2485 [DOI] [Details]
2006 'Electric-field-assisted assembly of perpendicularly oriented nanorod superlattices'
Ryan K.M., Mastroianni A., Stancil K.A., Liu H., Alivisatos A.P. (2006) 'Electric-field-assisted assembly of perpendicularly oriented nanorod superlattices'. Nano Letters, 6 (7):1479-1482 [DOI] [Details]
2006 'Electric Field Assisted Assembly of Perpendicular Oriented Nanorod Superlattices'
Ryan, KM; Mastroianni, A; Stancil, KA; Liu, H; Alivisatos, AP (2006) 'Electric Field Assisted Assembly of Perpendicular Oriented Nanorod Superlattices'. NANO LETTERS, 06 (*):1479-1482 [Details]
2005 'Controlling Morphological, Orientational and Material Properties of Mesoporous Aluminosilicate Films'
Ryan, KM; Lyons, D M Holmes, J D Farrell, R Brennan, E Morris, MA; (2005) 'Controlling Morphological, Orientational and Material Properties of Mesoporous Aluminosilicate Films'. STUDIES IN SURFACE SCIENCE AND CATALYSIS, 156 (*):303-314 [Details]
2005 'Periodic Binary Si:Ti, Si:Al Mixed Macroporous Oxides with Ultra-High Heteroatom loading: A Facile Sol-Gel Approach'
Hant, SH; Attard, GA; Riddle, R; Ryan, KM (2005) 'Periodic Binary Si:Ti, Si:Al Mixed Macroporous Oxides with Ultra-High Heteroatom loading: A Facile Sol-Gel Approach'. CHEMISTRY OF MATERIALS, 17 (*) [Details]
2005 'Compact Strain-sensitive flexible photonic crystals for sensors'
Pursanien, OL; Baumberg, JJ; Ryan, KM; Bauer, J; Winkler, H; Viel, B; Ruhl, T (2005) 'Compact Strain-sensitive flexible photonic crystals for sensors'. APPLIED PHYSICS LETTERS, 87 (*) [ULIR Link] [Details]
2004 'The Synthesis of Matrices of Embedded Semiconductor Nanowires'
Ziegler, KJ; Ryan, KM; Rice, R; Crowley, TA; Erts, D; Olin, H; Patterson, J; Spalding, TR; Holmes, JD; Morris, MA (2004) 'The Synthesis of Matrices of Embedded Semiconductor Nanowires'. FARADAY SPECIAL DISCUSSIONS OF THE CHEMICAL SOC, 125 (*):311-326 [Details]
2004 'Conductive films of ordered nanowire arrays'
Ziegler, K J Polyakov, B Kulharni, J Ryan, KM; Morris, MA; Erts, D Holmes, J D (2004) 'Conductive films of ordered nanowire arrays'. J. MATERIALS CHEMISTRY, 14 (*):585-589 [ULIR Link] [Details]
2004 'Pore expansion in mesoporous silicas using supercritical carbon dioxide'
Hanrahan, JP; Copley, MP; Ryan, KM; Morris, MA; Holmes, JD (2004) 'Pore expansion in mesoporous silicas using supercritical carbon dioxide'. CHEMISTRY OF MATERIALS, 16 (*):424-427 [ULIR Link] [Details]
2003 'Supercritical fluid preparation of copper nanotubes and nanowires using mesoporous templates'
Ziegler, KJ; Harrington, PA; Ryan, KM; Crowley, TA; Holmes, JD; Morris, MA (2003) 'Supercritical fluid preparation of copper nanotubes and nanowires using mesoporous templates'. JOURNAL OF PHYSICS-CONDENSED MATTER, 15 (*):8303-8314 [Details]
2003 'Three-dimensional architectures of ultra-high density semiconductor nanowires deposited on chip'
Ryan, KM; Erts, D; Olin, H; Morris, MA; Holmes, JD (2003) 'Three-dimensional architectures of ultra-high density semiconductor nanowires deposited on chip'. J. AM. CHEM.SOC, 125 (*):6284-6288 [Details]
2003 'Measurements of the lattice constant of ceria when doped with lanthana and praseodymia-the possibility of local defect ordering and the observation of extensive phase separation'
Ryan, KM; McGrath, JP; Farrell, RA; O'Neill, WM; Barnes, CJ; Morris, MA (2003) 'Measurements of the lattice constant of ceria when doped with lanthana and praseodymia-the possibility of local defect ordering and the observation of extensive phase separation'. JOURNAL OF PHYSICS-CONDENSED MATTER, 15 (L):49-58 [Details]
2002 'The use of templated mesoporous materials as templates for the development of ordered arrangements of nanowires and nanorods of electronically important materials'
Ryan, KM; Holmes, JD; Crowley, TA; Morris, MA (2002) 'The use of templated mesoporous materials as templates for the development of ordered arrangements of nanowires and nanorods of electronically important materials'. STUDIES IN SURFACE SCIENCE AND CATALYSIS, 141 (*):337-343 [Details]
2002 'The preparation of ordered mesoporous ceria with advanced stability'
Lyons, DM; Morris, MA; Ryan, KM (2002) 'The preparation of ordered mesoporous ceria with advanced stability'. J. MATERIALS CHEMISTRY, 2 (*):811-816 [Details]
2002 'Control of pore morphology in mesoporous silicas synthesised from triblock copolymer templates'
Ryan, KM; Coleman, NRB; Lyons, DM; Hanrahan, JP; Spalding, TR; Morris, MA; Steytler, DC; Heenan, RK; Holmes, JD (2002) 'Control of pore morphology in mesoporous silicas synthesised from triblock copolymer templates'. LANGMUIR, 18 (*):4996-5001 [Details]
2002 'Tailoring the Optical Properties of nanowires through strain'
Lyons, DM; Ryan, KM; Morris, MA; Holmes, JD (2002) 'Tailoring the Optical Properties of nanowires through strain'. NANO LETTERS, 2 (*):811-816 [Details]
2001 'Synthesis and Characterisation of dimensionally ordered semiconductor nanowires within mesoporous silica'
Coleman, NRB; Sullivan, N; Ryan, KM; Crowley, TA; Spalding, TR; Steytler, DC; Morris, MA; Holmes, JD (2001) 'Synthesis and Characterisation of dimensionally ordered semiconductor nanowires within mesoporous silica'. J. AM. CHEM.SOC, 123 (*):7010-7016 [Details]
2001 'The formation of dimensionally ordered germanium nanowires withing mesoporous silicas'
Coleman, NRB; Ryan, KM; Spalding, TR; Holmes, JD; Morris, MA (2001) 'The formation of dimensionally ordered germanium nanowires withing mesoporous silicas'. CHEMICAL PHYSICS LETTERS, 343 (*):1-6 [Details]

Book Chapters

  Year Publication
2003 'Macroporous Materials as Templates for Semiconductor Nanowire Assembly'
Holmes, JD; Morris, MA; Ryan, KM (2003) 'Macroporous Materials as Templates for Semiconductor Nanowire Assembly' In: Self Assembly. [Details]

Conference Publications

  Year Publication
2009 STATE-OF-THE-ART PROGRAM ON COMPOUND SEMICONDUCTORS 51 (SOTAPOCS 51) -AND- WIDE-BANDGAP SEMICONDUCTOR MATERIALS AND DEVICES 10
O'Sullivan, C,Gunning, RD,Barrett, CA,Singh, A,Geaney, H,Sanyal, A,Ahmed, S,Bala, T,Ryan, KM,Stokes, E,Goldhahn, R,Hunter, G,ODwyer, C,Ambacher, O,Huang, J,Kohn, E,Overberg, ME (2009) Facet Specific Gold Tip growth on Semiconductor Nanorods STATE-OF-THE-ART PROGRAM ON COMPOUND SEMICONDUCTORS 51 (SOTAPOCS 51) -AND- WIDE-BANDGAP SEMICONDUCTOR MATERIALS AND DEVICES 10 , pp.17-29 [DOI] [Details]
2013 Silver Tip Formation on Colloidal CdSe Nanorods by a Facile Phase Transfer Protocol
Bala, T,Ryan, KM,Giri, PK,Goswami, DK,Perumal, A (2013) ADVANCED NANOMATERIALS AND NANOTECHNOLOGY Silver Tip Formation on Colloidal CdSe Nanorods by a Facile Phase Transfer Protocol , pp.21-31 [DOI] [Details]
2013 Water Dispersible Semiconductor Nanorod Assemblies Via a Facile Phase Transfer and Their Application as Fluorescent Biomarkers
Sanyal, A,Ryan, KM,Giri, PK,Goswami, DK,Perumal, A (2013) ADVANCED NANOMATERIALS AND NANOTECHNOLOGY Water Dispersible Semiconductor Nanorod Assemblies Via a Facile Phase Transfer and Their Application as Fluorescent Biomarkers , pp.95-110 [DOI] [Details]
2015 GREENLION Project: Advanced Manufacturing Processes for Low Cost Greener Li-Ion Batteries
de Meatza, I,Miguel, O,Cendoya, I,Kim, GT,Loffler, N,Laszczynski, N,Passerini, S,Schweizer, PM,Castiglione, F,Mele, A,Appetecchi, GB,Moreno, M,Brandon, M,Kennedy, T,Mullane, E,Ryan, KM,Cantero, I,Olive, M,Briec, E,Muller, B (2015) ELECTRIC VEHICLE BATTERIES: MOVING FROM RESEARCH TOWARDS INNOVATION: REPORTS OF THE PPP EUROPEAN GREEN VEHICLES INITIATIVE GREENLION Project: Advanced Manufacturing Processes for Low Cost Greener Li-Ion Batteries , pp.45-60 [DOI] [Details]
2009 ECS Transactions
Ahmed S., Barrett C.A., O'Sullivan C., Sanyal A., Geaney H., Singh A., Gunning R.D., Ryan K.M. (2009) Electrophoretic deposition of spherical and rod-shaped nanocrystals into close packed superlattices ECS Transactions , pp.209-219 [DOI] [Details]
2009 ECS Transactions
O'Sullivan C., Gunning R.D., Barrett C.A., Singh A., Geaney H., Sanyal A., Ahmed S., Bala T., Ryan K.M. (2009) Facet specific gold tip growth on semiconductor nanorods ECS Transactions , pp.17-29 [DOI] [Details]
2009 Materials Research Society Symposium Proceedings
Ryan K.M., Ahmed S. (2009) Vertical aligned nanorod assembly by electrophoretic deposition from organic solvents Materials Research Society Symposium Proceedings , pp.36-40 [Details]

Magazine Article

  Year Publication
2012 Facile spin-cast route for cation exchange of multilayer perpendicularly-aligned nanorod assemblies.
Kelly, D,Singh, A,Barrett, CA,O'Sullivan, C,Coughlan, C,Laffir, FR,O'Dwyer, C,Ryan, KM (2012) Facile spin-cast route for cation exchange of multilayer perpendicularly-aligned nanorod assemblies. Meeting Abstract [Details]
2012 Self-assembly of CuInS2 and CuIn1-xGaxS2 nanorod into 2D and 3D superstructure.
Singh, A,Coughlan, C,Geaney, H,Kelly, D,Ryan, KM (2012) Self-assembly of CuInS2 and CuIn1-xGaxS2 nanorod into 2D and 3D superstructure. Meeting Abstract [Details]
2012 High density germanium nanowire growth directly from copper foil by self-induced solid seeding.
Geaney, H,Dickinson, C,Ryan, KM (2012) High density germanium nanowire growth directly from copper foil by self-induced solid seeding. Meeting Abstract [Details]

Reviews

  Year Publication
2017 Compound Copper Chalcogenide Nanocrystals.
Coughlan, C,Ibanez, M,Dobrozhan, O,Singh, A,Cabot, A,Ryan, KM (2017) Compound Copper Chalcogenide Nanocrystals. Reviews [DOI] [Details]

Honours and Awards

  Year Title Awarding Body
2011 MSSI Researcher Award MSSI
2001 Institute of Chemistry of Ireland Golden Jubilee Award

Professional Associations

  Association Function From / To
Marie Curie Fellowship Association Association of Reserchers who have receive a Marie Curie Award 28-APR-03 / 30-DEC-99
Royal Society of Chemistry Member 01-JUN-01 / 30-DEC-99

Patents

  Patent Number Title Inventor Granted
US8138067 Method and System for Synthesis of Semiconductor Nanowires K Ryan, C Barrett 30-MAR-12
US6699797 Method of Fabrication of Low Dielectric Constant Porous Metal Silicate Film 17-DEC-02

Employment

  Employer Position From / To
Merck Chemicals Ltd. Marie Curie Fellow 28-APR-03 / 29-JAN-05
University College Cork Enterprise Ireland Research Fellow 01-SEP-02 / 27-APR-03
University of California Berkeley Marie Curie Research Fellow 01-FEB-06 / 01-FEB-06

Education

  Year Institution Qualification Subject
2003 University College Cork Ph.D.
1999 University College Cork B.Sc.

Teaching Interests

                      

Modules

4 modules taught annually, CH4252 (Inorganic Chemistry 1B), CH4253 ( Inorganic Chemistry 2B), CH4305 ( Analytical Chemistry 3/Crystallography) and CH4017 (Chemical Nanotechnology). Approximately 300 students annually all with labs

14 FYPs in past 5 years

Programme management/admin

Course Director Pharmaceutical and Industrial Chemistry since June 12, Accreditation of course through RSC achieved in December 12. Part of UL team that succesfully attained funding for a Graduate School in Nanoscience and Nanotechnology now in its second year. This structured PhD programme now forms the basis of all PhDs

New Modules

CH4017, Chemical Nanotechnology, final year Elective for 4th year PIC students.