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Dr. 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
 Hybrid quantum-well and quantum dot photonic devices
 Realization of 100 GHz all-optical wavelength conversion using polarization switching in SOAs
 High efficiency white light emitting diodes
 Surface plasmon -semiconductor nanocrystal interactions: toward nanoscale light emitting devices

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Details Date
Reviewer for Thomas Preston Postgraduate Scholarship Award in Physics, University College Dublin January 2020
Reviewer for Irish Fulbright Awards December 2019
Chair of Photonics Ireland 2020 2020
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
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 ANR (France), DoE (US), New Zealand Science Foundation, and Austrian Science Foundation 2001-present
Reviewer for many journals including ACS Nano, Scientific Reports, Nanoscale, Physical Review Letters, Advanced Materials, Journals of Physical Chemistry, Applied Physics Letters, Journal of Quantum Electronics, Photonics Technology Letters, Journal of Lightwave Technology 2001 - present
Chair of Nanophotonics and Plasmonics Committee, Photonics Ireland 2011,2013, 2015, 2017, 2018
Scientific Advisory Committee, CIMTEC 2016, 2018 and 2020 2016, 2018 and 2020
External Expert in Photonics and Physics on 13 Appointment Committees 2001 - present
PhD examiner in other third level institutions 2001 - present
Scientific Advisory Committee, EMN Light Matter Interactions 2016 2016
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 2011
Optoelectronics and Photionic Devices Programme Committee Member, SPIE Opto-Ireland 2005 2005
Technical Committee Member, Photonics Ireland, Galway 2007 and 2009
Irish representative at Cost P11: Physics of linear and non-linear photonic crystals 2003-2007
Advisory committee member for the 4th International Conference on Physics of Light-matter Coupling in Nanostrcutures, St. Petersburg, July 2004 2004
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
Details Date From Date To
American Physical Society
Institute of Physics
Julia Lawless, Calin Hrelescu, Carolyn Elliott, Lisanne Peters, Niall McEvoy, A. Louise Bradley, Rabi Splitting between Plasmons in Gold Nano-bipyramids and Excitons in Monolayer MoS2 revealed by Single-particle Dark Field Spectroscopy, Microscopy Society of Ireland 2020, Dublin, Ireland, 10th January, 2020, 2020, Conference Paper, PUBLISHED
S. Cunnningham, S. Barry Porter, P. Stamenov, C. Hrelescu, and A. L. Bradley, Tuning metasurfaces with phase change materials, Proceedings of the 21st International Conference on Transparent Optical Networks, 21st International Conference on Transparent Optical Networks, Angers, France, 7th July, 2019, 2019, Conference Paper, PUBLISHED
A. L Bradley, Tuning metasurfaces with phase change materials, 21st International Conference on Transparent Optical Networks, Angers, France, 7th July, 2019, 2019, Invited Talk, PRESENTED
Wolfgang Schmitt, Luana Martins, Lauren Macreadie, Debobroto Sensharma, Sebastien Vaesen, Xia Zhang, John Gough, Mariah O'Doherty, Nianyong Zhu, Manuel Ruether, John E O'Brien and A. Louise Bradley , Light-harvesting, 3rd generation RuII/CoII MOF with large, tubular channel aperture, Chemical Communications, 2019, Journal Article, PUBLISHED  DOI
John J. Gough , Niall McEvoy, Maria O'Brien, John McManus, Jorge Garcia-Coindreau, Alan P. Bell, David McCloskey, Calin Hrelescu, Georg S. Duesberg, and A. Louise Bradley, Dependence of Photocurrent Enhancements in Hybrid Quantum Dot-MoS2 Devices on Quantum Dot Emission Wavelength, ACS Photonics, 2019, p976-984 , Journal Article, PUBLISHED  DOI
Keith Wilson, Cristian A. Marocico, Esteban Pedrueza-Villalmanzo, Christopher Smith, Calin Hrelescu and A. Louise Bradley, Plasmonic Colour Printing by Light Trapping in Two-Metal Nanostructures, Nanomaterials, 9, (7), 2019, p963 , Journal Article, PUBLISHED  TARA - Full Text  DOI
Daniel K. Kehoe, Joseph McCarthy, John J. Gough, A. Louise Bradley, Yurii K. Gun'ko, Macroscopic Vortex-Induced Optical Activity in Silver Nanowires, Journal of Physical Chemistry C, 123, (24), 2019, p15307 , Journal Article, PUBLISHED  DOI
S. Cunningham, J. J. Gough, S. B. Porter, P. Stamenov, C. Hrelescu, A. L. Bradley, Dynamic Tuning of Plasmonic Structures using Phase Change Materials, E-MRS, Spring Meeting, Nice, France, 27th may, 2019, 2019, Oral Presentation, PRESENTED
S. Cunningham, J. J. Gough, S. B. Porter, P. Stamenov, C. Hrelescu, A. L. Bradley, Light Manipulation with Plasmonic Structures using Phase Change Materials, CLEO Europe, Munich, Germany, 27th June, 2019, 2019, Poster, PRESENTED
Gough, J.J. and McEvoy, N. and O'Brien, M. and Bell, A.P. and McManus, J. and McCloskey, D. and Boland, J.B. and Coleman, J.N. and Duesberg, G.S. and Louise Bradley, A., Nonradiative Energy Transfer and Photocurrent Enhancements in Hybrid Quantum Dot-MoS2 Devices, Proceedings of the 20th International Conference on Transparent Optical Networks, 2018 20th International Conference on Transparent Optical Networks (ICTON), 2018-July, 2018, pp8473673-, Conference Paper, PUBLISHED  DOI

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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
C. A. Marocico and A. L. Bradley, Decay and Energy Transfer Near Au Nanospheres, NanoNET, Dublin, September 17-19th, 2012, Poster, PRESENTED
X. Zhang, C. A. Marocico, M. Lunz, V. A. Gerard, Y. K. Gun'ko, V. Lesnyak, N. Gaponik, A. S. Susha, A. L. Rogach and A. L. Bradley, Probing the interaction between a bilayer of QDs and gold nanoparticles with Förster resonance and nanometal surface energy transfer theories, NanoNET, Dublin, September 17-19th, 2012, Poster, PRESENTED
G. P. Murphy , V. A. Gerard, Y. K. Gun'ko, P. J. Parbrook , T. Sadler, V. Lesnyak, N. Gaponik, A. S. Susha, A. L. Rogach and A. L. Bradley, Hybrid QW structures with colloidal QDs and metal nanoparticles: Experimental Results, NanoNET, September 17-19th, 2012, Poster, PRESENTED
V. Karanikolas, C.A. Marocico and A.L. Bradley, Local Field Enhancement of Nanoparticles in the Presence of Dipole Sources, NanoNET, Dublin, September 17-19th, 2012, Poster, PRESENTED


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Award Date
Fellow of Trinity College Dublin 2009
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.