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Professor Louise Bradley

Professor in (Physics)

Prof. Bradley leads a vibrant research team in the field of photonics, with current research interests mainly in the area of nanophotonics. Her research is directly relevant for development of higher efficiency light emitting devices, solar cells and sensing applications. She has previously made significant contributions to the development of novel devices for optical telecommunications systems. In 1992 she received a BSc (First Class Hons.) in Experimental Physics from University College Dublin. She was awarded Forbairt and Trinity College Dublin scholarships to pursue postgraduate studies at Trinity College Dublin, obtaining a MSc in 1994 and a PhD in 1998. During her PhD she studied nonlinear optical processes in semiconductor microcavity systems. As a Postdoctoral Research Fellow she worked on the development of semiconductor microcavity devices for lighting applications. In 1999, she became a Lecturer in the Institute of Technology, Tallaght, before returning to join the academic staff of the School of Physics in 2000. Subsequently, she was appointed Senior Lecturer and elected to Fellowship of the College in 2009, and promoted to Professor in 2016. Dr. Bradley has won over 3.55 M€ in competitive funding from Science Foundation Ireland, Enterprise Ireland and the Irish Research Council. She has published over 140 scientific papers and collaborates with national and international research teams.
  CAVITY POLARITONS   Condensed matter, optical and dielectric properties   FABRICATION   Laser technology   NANOSTRUCTURES   Nanotechnology   Nonlinear Dynamics   Optical materials   Optics   PHOTOLUMINESCENCE   Photon Science & Technology   Photonic Networks   Photonics   Physics   QUANTUM-WELL   SEMICONDUCTOR DEVICES AND MATERIALS   SEMICONDUCTOR LASERS   SEMICONDUCTOR NANOCRYSTALS   SEMICONDUCTOR OPTICAL AMPLIFIERS   Semiconductor optoelectronics   SEMICONDUCTOR QUANTUM WELLS   SEMICONDUCTOR-LASERS   SEMICONDUCTORS   SPECTROSCOPIC CHARACTERIZATION   Telecommunications Research
 Responsive Photonic Structures
 Dynamic tuning of plasmonic structures
 Plasmon‐enhanced upconverting nanocrystals for biological labelling
 Pixel Demonstrator for Actively Tuned Reflective Plasmonic Display
 A strategy for metallic nanostructured display

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Details Date
External Assessor for Full Chair Position, Okinawa Institute of Science and Technology May 2021
Interview Panel for SPARKLE Postdoctoral MCSA Fellowships April 2021
IPIC (SFI Centre for Integrated Photonics), Tyndall, Leadership Committee member April 2018
Reviewer for Thomas Preston Postgraduate Scholarship Award in Physics, University College Dublin January 2020
Reviewer for Irish Fulbright Awards December 2019
Committee Member of the Physical, Chemical and Mathematical Science Committee, Royal Irish Academy 2018 - present
Co-editor of a special issue of Applied Optics dedicated to Optics in Ireland Dec 2018
Internal PhD Examiner in Engineering, Nanomedicine and Physics in Trinity for more than 15 theses 2001
External Examiner for 3 Bachelor Degree Programmes in the School of Physics, Dublin City University 2015-2019
Expert reviewer for national funding agencies in 10 countries across 3 continents including the EPSRC and Royal Society (UK), ANR (France), DoE (US), New Zealand Science Foundation, and Austrian Science Foundation 2001-present
Reviewer for many top-ranked journals including ACS Nano, Nano Letters, Scientific Reports, Nanoscale, Physical Review Letters and Physical Review B, Advanced Materials, Journals of Physical Chemistry, Applied Physics Letters, Journal of Quantum Electronics, Photonics Technology Letters, Journal of Lightwave Technology 2001 - present
External Expert in Photonics and Physics on 13 Appointment Committees in UCC, Tyndall, DCU, NUIG and TUD 2001 - present
External Examiner for more than 10 PhD theses in other universities 2001 - present
External Academic Assessor for Dublin Institute of Technology B.Sc. in Physics Technology 2011
Academic External Assessor for new degree programme, B.Sc. in Energy and Environmental Physics in Dublin Institute of Technology 2011
Irish representative at Cost P11: Physics of linear and non-linear photonic crystals 2003-2007
Irish Representative at COST 268, Wavelength scale photonics components for telecommunications 2001
Language Skill Reading Skill Writing Skill Speaking
English Fluent Fluent Fluent
French Medium Medium Medium
Zhang, X. and Bradley, A.L., Polaritonic critical coupling in a hybrid quasibound states in the continuum cavity- WS2 monolayer system, Physical Review B, 105, (16), 2022, Notes: [cited By 0], Journal Article, PUBLISHED  DOI
Zhang, X. and Lawless, J. and Li, J. and Donegan, J.F. and Bradley, A.L. and Peters, L. and McEvoy, N., Absorbance enhancement of monolayer MoS2 in a perfect absorbing system, Physical Review Materials, 6, (4), 2022, Notes: [cited By 0], Journal Article, PUBLISHED  DOI
Cunningham, S. and Hrelescu, C. and Atcheson, G. and Stamenov, P. and Louise Bradley, A., Photoluminescence modification using plasmonic nanoparticles coupled to vanadium dioxide, (JTu1A.2), 2021, Notes: [cited By 0], Conference Paper, PUBLISHED
Zhang, X. and Li, J. and Donegan, J.F. and Bradley, A.L., Transfer Matrix Method for Kerker-type Scattering of Metasurface, 2021, Notes: [cited By 0], Conference Paper, PUBLISHED
Zhang, X. and Li, J. and Donegan, J.F. and Bradley, A.L., Transfer matrix method for Kerker-type scattering of metasurface, (JW1A.5), 2021, Notes: [cited By 0], Conference Paper, PUBLISHED
Fionnuala McGrath, Jing Qian, Kelsey Gwynne, Cindy Kumah, Dermot Daly, Calin Hrelescu, Xia Zhang, Deirdre M O'Carroll, A Louise Bradley, Structural, optical, and electrical properties of silver gratings prepared by nanoimprint lithography of nanoparticle ink, Applied Surface Science, 537, 2021, p147892 , Journal Article, PUBLISHED  TARA - Full Text  DOI
Garcia, J.A. and Hrelescu, C. and Zhang, X. and Grosso, D. and Abbarchi, M. and Bradley, A.L., Quasi-Guided Modes in Titanium Dioxide Arrays Fabricated via Soft Nanoimprint Lithography, ACS Applied Materials and Interfaces, 13, (40), 2021, p47860-47870 , Notes: [cited By 1], Journal Article, PUBLISHED  DOI
Colm Delaney, Jing Qian, Xia Zhang, Radislav Potyrailo, A. Louise Bradley, Larisa Florea, Direct laser writing of vapour-responsive photonic arrays, Journal of Materials Chemistry C, 9, 2021, p11674 - 11678, Journal Article, PUBLISHED  TARA - Full Text  DOI
Cunningham, S. and Hrelescu, C. and Bradley, A.L., Plasmonic nanodiscs on vanadium dioxide thin films for tunable luminescence enhancement, Optics Express, 29, (14), 2021, p22288-22298 , Notes: [cited By 1], Journal Article, PUBLISHED  DOI
Zhang, X. and Bradley, A.L., Wide-angle invisible dielectric metasurface driven by transverse Kerker scattering, Physical Review B, 103, (19), 2021, Notes: [cited By 6], Journal Article, PUBLISHED  DOI

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A. L. Bradley, Plasmon-coupled nano-emitters, Chist-Era , 18th May, 2021, UKRi-EPSRC, Invited Talk, PUBLISHED
Louise Bradley, Plasmon coupled nanoemitters, Biophotonics Seminar Series, Tyndall, Co. Cork, 12th March 2021, 2021, IPIC, Invited Talk, PUBLISHED
A. L. Bradley, Plasmon coupled nanoemitters, UCC Physics Seminar Series, UCC, Co. Cork, 19th April 2021, 2021, Physics, UCC, Invited Talk, PUBLISHED
Julia Lawless, Calin Hrelescu, Carolyn Elliott, Lisanne Peters, Niall McEvoy and A. Louise Bradley, Exciton-plasmon interaction in the strong coupling regime, 2nd Annual AMBER Conference, Laois, Ireland, 15th January, 2020, AMBER, Invited Talk, PUBLISHED
C. Elliott, C. Hrelescu and A. L. Bradley, Multiresonance plasmonic nanostructures, CLEO US, San Jose, USA, 10th May, 2019, 2019, Oral Presentation, PRESENTED
A. L. Bradley, Importance of diversity in Physics, Women in STEM, Trinity College Dublin, 2017, TCDSU and Wiser, Invited Talk, PRESENTED
A. L. Bradley, Enhancing Forster non-radiative energy transfer via plasmon interaction, TCD Physoc, Physics, Trinity College Dublin, March, 2017, 2017, TCD Physics Society, Invited Talk, PRESENTED
A. L. Bradley, Women in Physics: a journey to nanoscale optics, Women in Science Week, Trinity College Dublin, November, 2014, 2014, Physoc and Dublin University Gender Equality Society, Invited Talk, PRESENTED
A. L. Bradley, Shedding light in the nanoscale, Presidential address, Trinity College Dublin, October 2013, 2013, Physoc, Invited Talk, PRESENTED
A. L. Bradley, Localised surface plasmon coupled non-radiative energy transfer, Technical Universitat Berlin, November 2011, 2011, Invited Talk, PRESENTED


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Award Date
AMBER Research Centre funding for a PhD studentship (€127,500) September 2020
Chinese Scholarship Council funding for a PhD studentship (€90,000) September 2019
IPIC Research Centre funding for a PhD studentship (€169,700) September 2018
Principal Investigator Award, Science Foundation Ireland (€876,154) October 2017
TIDA, Science Foundation Ireland (€96,476) September 2014
Irish Research Council Postgraduate Scholarship Award (€96,000) October 2013
Irish Research Council Postgraduate Scholarship Award (€96,000) October 2013
National Access Programme Award (€35,589) October 2012
CRANN Pathfinder Award (€47,383) October 2013
Investigator Award, Science Foundation Ireland (€597,965) October 2011
Irish Research Council Postgraduate Scholarship Award (€72,000) October 2011
Fellow of Trinity College Dublin 2009
Commercialization Technology Development Fund, Enterprise Ireland (€389,797 Total/€98,105 PI) October 2007
Principal Investigator Career Development Award, Science Foundation Ireland (€426,360) September 2006
Research Frontiers Programme Award, Science Foundation Ireland (€182,725 Total/€61,636 PI) September 2006
Principal Investigator Career Development Award, Science Foundation Ireland (€426,360) September 2006
PRLTI, Higher Education Authority (€50,000) September 2004
Proof of Concept Award, Enterprise Ireland (€89,900 Total/€68,400 PI) September 2004
Uylsses Fund, Enterprise Ireland and CNRS (€2,500) September 2004
International Collaboration Programme, Enterprise Ireland (€3,000) September 2003
Basic Research Award, Irish Research Council for Science Engineering and Technology (€189,000 Total.€44,017 PI) September 2003
Advanced technology Research Programme, Enterprise Ireland (€330,500 Total/€195,250 PI) September 2002
Research Innovation Fund Award, Enterprise Ireland (€180,390 Total/€110,895 PI) September 2002
Start-up Fund, Trinity College Dublin (€14,906) October 2001
Uylsses Fund, Enterprise Ireland and CNRS (€1,850) September 2001
Basic Forbairt Research Award for Fundamental Physics 1992
Trinity College Dublin Postgraduate Scholarship 1992
Nominated for Excellence in Teaching Award 2013
Nominated for Favourite Woman in Trinity Science - Dublin University General Science Society 2017, 2018 and 2019
Selected for highlight in the SPIE 2017 Women in Optics Planner 2017
My current research interests include nanophotonics and plasmonics for novel functionality and enhanced performance of photonic devices. A key direction of my research is investigation of near-field energy transfer in semiconductor systems. Of fundamental importance for energy transport and control of interactions between quantum emitters on the nanoscale, this process has far-reaching consequences for sensing, optical computing, light emitting devices and light harvesting applications. My research over the past few years has concentrated plasmonic coupled systems, including enhanced non-radiative energy transfer and emission. My group was the first to report experimental plasmonic enhancement of energy transfer between quantum dots. Subsequently, I published a number of papers demonstrating the role of different parameters in controlling the energy transfer signatures. Most recently, my group has demonstrated that plasmon-enhanced energy transfer can be applied in hybrid material systems which are technologically of great interest, We have reported on plasmon enhanced energy transfer between InGaN quantum wells and quantum dots which can be used for improved light emission and light-harvesting devices. My group is also currently investigating plasmon coupled chiral systems, QD- 2D (MoS2) materials and plasmon-graphene structures. Leading groups in state of the art colloidal QD and plasmonic nanocrystals (Gaponik (TU Dresden), Rogach (City University, Hong Kong and Gun'ko (Chemistry, TCD)), have provided materials for my research over many years. Other collaborators include Prof. Parbrook from the Tyndall Institute, Cork who is an expert in the growth of GaN materials. Tailored plasmonic structures are fabricated using focused-ion beam, e-beam lithography and helium-ion lithography. Interaction with nanoscale metallic features can result in modified emission properties, in terms of intensity, directionality and polarization. Plasmonic structures can facilitate improved performance and enhanced functionality for many applications including, but not limited to, light emitting devices, light harvesting, sensing, quantum optics and all-optical data processing. We have developed a wide range of characterization techniques for the investigation of these nanoscale systems. Over my career I have developed a broad expertise in the field of photonics. My earlier work concentrated on semiconductor microcavity physics and devices. During my PhD I used dynamic non-linear techniques, such as pump-probe and four-wave-mixing, to study the physics of cavity polaritons in semiconductor microcavities. Following on from this work, I investigated how microcavities could be used to enhance non-linear processes, in particular for microcavity-enhanced two-photon absorption based detector. Microcavity structures can also be used to enhance and direct emission. I participated in the EU framework project, AGETHA, with responsibility for the optical design of GaN-based microcavity light emitting devices. I applied my knowledge of pump-probe systems for the development a contra-propagation pump-probe technique for the study of the polarization dependence of intra-band carrier dynamics in semiconductor optical amplifiers and the influence of these dynamics on nonlinear polarization rotation. This project, in collaboration with Dr. P.Landais (DCU), was interested in the potential of nonlinear polarization for optical switching. The collaboration led to a further successful project which demonstrated the lowest noise-figure to date for a bulk SOA using novel a multi-contact structure to control the carrier distribution along the length of the device.