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Prof. Kevin M. Ryan

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

                      

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.

                      

Professional Activities

Patent

  • 2012 US8138067 - Method and System for Synthesis of Semiconductor Nanowires
  • 2002 US6699797 - Method of Fabrication of Low Dielectric Constant Porous Metal Silicate Film

Award

  • 2011 - MSSI Researcher Award
  • 2001 - Institute of Chemistry of Ireland Golden Jubilee Award

Employment

  • 2006 University of California Berkeley - Marie Curie Research Fellow
  • 2003 Merck Chemicals Ltd. - Marie Curie Fellow
  • 2002 University College Cork - Enterprise Ireland Research Fellow

Association

  • 2003 Association of Reserchers who have receive a Marie Curie Award, Marie Curie Fellowship Association
  • 2001 Member, Royal Society of Chemistry

Education

  • 2003 University College Cork - Ph.D.
  • 1999 University College Cork - B.Sc.

Publications

Book Chapter

2003

Macroporous Materials as Templates for Semiconductor Nanowire Assembly
Holmes, JD; Morris, MA; Ryan, KM
Self Assembly

Conference Publication

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
Electric Vehicle Batteries: Moving From Research Towards Innovation: Reports Of The Ppp European Green Vehicles Initiative DOI: 10.1007/978-3-319-12706-4_4

2013

Silver Tip Formation on Colloidal CdSe Nanorods by a Facile Phase Transfer Protocol
Bala, T,Ryan, KM,Giri, PK,Goswami, DK,Perumal, A
Proceedings Of The 25th International Conference On The Physics Of Semiconductors, Pts I And Ii DOI: 10.1007/978-3-642-34216-5_2

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
Proceedings Of The 25th International Conference On The Physics Of Semiconductors, Pts I And Ii DOI: 10.1007/978-3-642-34216-5_9

2009

ECS Transactions
Ahmed S., Barrett C.A., O'Sullivan C., Sanyal A., Geaney H., Singh A., Gunning R.D., Ryan K.M.
Ecs Transactions DOI: 10.1149/1.3120702

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
Ecs Transactions DOI: 10.1149/1.3238202

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.
Ecs Transactions DOI: 10.1149/1.3238202

Other Publication

2017

Compound Copper Chalcogenide Nanocrystals
Coughlan, C,Ibanez, M,Dobrozhan, O,Singh, A,Cabot, A,Ryan, KM
Chemical Reviews DOI: 10.1021/acs.chemrev.6b00376

2012

Self-assembly of CuInS2 and CuIn1-xGaxS2 nanorod into 2D and 3D superstructure
Singh, A,Coughlan, C,Geaney, H,Kelly, D,Ryan, KM
Abstracts Of Papers Of The American Chemical Society

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
Abstracts Of Papers Of The American Chemical Society

2012

High density germanium nanowire growth directly from copper foil by self-induced solid seeding
Geaney, H,Dickinson, C,Ryan, KM
Abstracts Of Papers Of The American Chemical Society

Peer Reviewed Journal

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
ACS Applied Materials & Interfaces DOI: 10.1021/acsami.5b00983

2014

Complete Colloidal Synthesis of Cu2SnSe3 Nanocrystals with Crystal Phase and Shape Control
Wang, JJ,Liu, P,Seaton, CC,Ryan, KM
Journal of the American Chemical Society DOI: 10.1021/ja501591n

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
Nature Communications DOI: 10.1038/ncomms4133

2014

Promoting cell proliferation using water dispersible germanium nanowires.
Bezuidenhout M, Liu P, Singh S, Kiely M, Ryan KM, Kiely PA
Plos One DOI: 10.1371/journal.pone.0108006

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
Nano Research DOI: 10.1007/s12274-013-0287-9

2013

Compositionally Tunable Photoluminescence Emission in Cu2ZnSn(S1-xSex)(4) Nanocrystals
Singh, A,Singh, S,Levcenko, S,Unold, T,Laffir, F,Ryan, KM
Angewandte Chemie-International Edition DOI: 10.1002/anie.201302867

2013
2013

Colloidal Synthesis of Cu2SnSe3 Tetrapod Nanocrystals
Wang, JJ,Singh, A,Liu, P,Singh, S,Coughlan, C,Guo, YN,Ryan, KM
Journal Of The American Chemical Society DOI: 10.1021/ja403083p

2013

Solution phase synthesis of silicon and germanium nanowires
Geaney, H,Mullane, E,Ryan, KM
Journal Of Materials Chemistry C DOI: 10.1039/c3tc31123f

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
Chemistry Of Materials DOI: 10.1021/cm302066n

2012

Colloidal Synthesis of Wurtzite Cu2ZnSnS4 Nanorods and Their Perpendicular Assembly
Singh, A,Geaney, H,Laffir, F,Ryan, KM
Journal Of The American Chemical Society DOI: 10.1021/ja2112146

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
Journal Of Materials Chemistry DOI: 10.1039/c1jm14382d

2011
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
Journal Of Materials Chemistry DOI: 10.1039/c0jm04324a

2011

High Density Germanium Nanowire Growth Directly from Copper Foil by Self-Induced Solid Seeding
Geaney, H; Dickinson, C; Barrett, CA; Ryan, KM
Chemistry Of Materials DOI: 10.1021/cm202276m

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
Nanoscale DOI: 10.1039/c1nr11031d

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
Langmuir DOI: 10.1021/la203227k

2011

Perpendicular growth of catalyst-free germanium nanowire arrays
Barrett, CA; Geaney, H; Gunning, RD; Laffir, FR; Ryan, KM
Chemical Communications DOI: 10.1039/c0cc05202g

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
Crystal Growth & Design DOI: 10.1021/cg200510y

2010

A multi-rate kinetic model for spontaneous oriented attachment of CdS nanorods
Gunning, RD; O'Sullivan, C; Ryan, KM
Physical Chemistry Chemical Physics DOI: 10.1039/c0cp00196a

2010

Size controlled gold tip growth onto II-VI nanorods
O'Sullivan, C; Gunning, RD; Barrett, CA; Singh, A; Ryan, KM
Journal Of Materials Chemistry DOI: 10.1039/c0jm01689f

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
Journal Of Materials Chemistry DOI: 10.1039/b914950c

2010
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
Journal Of The American Chemical Society DOI: 10.1021/ja902860t

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
Journal Of Materials Chemistry DOI: 10.1039/b913476j

2009
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
Nanotechnology DOI: 10.1088/0957-4484/20/27/275605

2008

Gold tip formation on perpendicularly aligned semiconductor nanorod assemblies
O'Sullivan, C; Ahmed, S; Ryan, KM
Journal Of Materials Chemistry DOI: 10.1039/b810543j

2006

Electric Field Assisted Assembly of Perpendicular Oriented Nanorod Superlattices
Ryan, KM; Mastroianni, A; Stancil, KA; Liu, H; Alivisatos, AP
Nano Letters

2006

Electric-field-assisted assembly of perpendicularly oriented nanorod superlattices
Ryan K.M., Mastroianni A., Stancil K.A., Liu H., Alivisatos A.P.
Nano Letters DOI: 10.1021/nl060866o

2005

Compact Strain-sensitive flexible photonic crystals for sensors
Pursanien, OL; Baumberg, JJ; Ryan, KM; Bauer, J; Winkler, H; Viel, B; Ruhl, T
Applied Physics Letters

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;
Studies In Surface Science And Catalysis

2004

Conductive films of ordered nanowire arrays
Ziegler, K J Polyakov, B Kulharni, J Ryan, KM; Morris, MA; Erts, D Holmes, J D
J. Materials Chemistry

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
Faraday Special Discussions Of The Chemical Soc.

2004

Pore expansion in mesoporous silicas using supercritical carbon dioxide
Hanrahan, JP; Copley, MP; Ryan, KM; Morris, MA; Holmes, JD
Chemistry Of Materials

2003

Three-dimensional architectures of ultra-high density semiconductor nanowires deposited on chip
Ryan, KM; Erts, D; Olin, H; Morris, MA; Holmes, JD
J. Am. Chem.Soc.

2003

Supercritical fluid preparation of copper nanotubes and nanowires using mesoporous templates
Ziegler, KJ; Harrington, PA; Ryan, KM; Crowley, TA; Holmes, JD; Morris, MA
Journal Of Physics-Condensed Matter

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
Langmuir

2002

Tailoring the Optical Properties of nanowires through strain
Lyons, DM; Ryan, KM; Morris, MA; Holmes, JD
Nano Letters

2002

The preparation of ordered mesoporous ceria with advanced stability
Lyons, DM; Morris, MA; Ryan, KM
J. Materials Chemistry

2001

The formation of dimensionally ordered germanium nanowires withing mesoporous silicas
Coleman, NRB; Ryan, KM; Spalding, TR; Holmes, JD; Morris, MA
Chemical Physics Letters

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
J. Am. Chem.Soc.