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HELLO! I'M bruno.

Bruno joined INL to develop, both theoretically and experimentally, novel disruptive nanoscale light-emitting diode sources for neural-inspired nanocircuits.

 

 

About Bruno romeira

Bruno Romeira received his Diploma degree in physics and chemistry from the University of the Algarve (Faro, Portugal) in 2006, and the PhD of physics (summa cum laude) and the title of European PhD at the same university, jointly with the University of Glasgow (UK) and the University of Seville (Spain) in 2012. He then held a postdoctoral appointment at the Microwave Photonics Research Laboratory of the University of Ottawa (2013-2014), and a Marie Skłodowska-Curie Research Fellowship at the Applied Physics Department of the Eindhoven University of Technology (2015-2017). His research cuts across several disciplines in applied physics and engineering, which include semiconductor physics, quantum electronics, solid state nano-optoelectronic and nano-photonic devices, and nonlinear dynamics. He has joined INL to develop, both theoretically and experimentally, novel disruptive nanoscale light-emitting diode sources for neural-inspired nanocircuits. Bruno Romeira received in 2009 the “Young Researchers Incentive Programme” award from the Calouste Gulbenkian Foundation, Portugal, and he is one of the recipients of the “2011 IEEE Photonics Society Graduate Student Fellowship”, from the IEEE Photonics Society, USA. Bruno Romeira's PhD thesis entitled “Dynamics of Resonant Tunneling Diode Optoelectronic Oscillators” was awarded the "Best PhD Thesis in Optics and Photonics in Portugal in 2012" by the Portuguese Society of Optics and Photonics (SPOF).

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The Cofund project

Nanoscale light-emitting diodes

We are currently witnessing an exponential growth of Artificial Intelligence (AI) systems to help humans dealing with highly complex tasks, such as sensing and learning, needed for the Internet of Things and to handle with Big Data. While the implementation of AI systems using computer algorithms of neural networks is emerging rapidly, scientists are just taking the very first steps in the development of the hardware elements of an artificial brain, specifically high-bandwidth and low power consumption neuromorphic (neuron-like) chips. The aim of the COFUND project is to perform cutting-edge research on fast and energy-efficient nonlinear nano-light-emitting diodes (nanoLEDs) at an unconventional scale, that will enable the generation of ultrafast optical pulses, or spikes, analogous to the chemical signalling in biological neurons. Using advanced micro- and nano-fabrication, electro-optical characterization and modelling methods, this project aims at emulating the biophysics of spiking neurons and dynamic synapses using the fabricated nonlinear nanoLED sources. This project will have a strong impact on a broad spectrum of scientific fields, namely materials science, nanoscale optoelectronics, optical physics, nanophotonics, nanoscale inorganic LEDs, and complex nonlinear dynamics.

Updates

The aim of the COFUND project is to develop cutting-edge research on fast and energy-efficient nonlinear metal-cavity nano-light-emitting diodes (nanoLEDs) at unconventional scale (down to 100 nm size), that will enable the generation of ultrafast optical pulses, or spikes, analogous to the chemical signaling in biological neurons. First, simulations were performed using WinGreen and Lumerical FDTD software for which licenses were obtained as part of the research project. In parallel, during the first months of the project several trainings on specialized equipment, specifically, e-beam and optical lithography, SEM, PECVD, dry etching, etc., was obtained. The processes were optimized after the initial manufacturing of calibration samples. The nanofabrication process of nano- and micro-scale pillars using e-beam nanolitography was established at INL cleanroom for GaAs-based light-emitting compound semiconductor materials. Advanced optical characterization of the fabricated nanopillars was performed in our optical laboratories, specifically the characterization of the photoluminescence and time-resolved photoluminescence. The achieved results, are currently being analyzed in detail and used to finalize and to develop the next generation of nanoLEDs.

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Activities

Organization of events

Co-organizer of the International Day of Light, FOR students WITH students, INL,

Braga, Portugal, 16th May, 2018.

Description: In the framework of the celebrations of UNESCO International Day of Light, we (Jana Nieder and Bruno Romeira) organized at the International Iberian Nanotechnology Laboratory, in Braga, Portugal, the International Day of Light - WITH students FOR students. The event targeted undergraduate students across all areas including natural sciences & engineering, design & arts, medical & life sciences, and business & management. The programme covered a wide-range of activities, including a guided tour through INL research facilities, the GNRation art gallery and inspirational short talks in cross-cutting scientific light applications as for example light and agriculture, light and medicine, structures for light and light-based computing.

 
 

Scientific outreach

Inspirational Short Talk: International Day of Light, FOR students WITH students, INL,

Braga, Portugal, 16th May, 2018. Title of the presentation: ‘Light-based computing’

Participation in Workshops, Schools and International Meetings

Participation in the Workshop: Photonic component, circuit and systems design using Lumerical Tools, STFC Rutherford Appleton Laboratory, UK, 11-13 September 2018

Participation in the International Meeting: Photonics21 Public Private Partnership (PPP) Annual Meeting 2018, ‘Winning the Future – Europe’s Age of Light’, Brussels, Belgium, 08-09 March 2019

Description: The annual PPP gathering set about defining the challenges that lie ahead in Research & Innovation for photonics and its applied fields in Europe. I participated and contributed to the Workshop session: Photonics Research, Education & Training (moderator: Roberta Ramponi). During this session a new mission for the future European funding scheme (beyond Horizon 2020) was outlined where digital innovation hubs in Europe should be used to enable and support disruptive research in Photonics. This will help to bridge the gap between fundamental research and innovation.

Participation in the School:PTEC SCHOOLS FUTURE OF COMPUTING”, 27th June 2018 Porto, Portugal,

International Conferences

Invited Presentations

Bruno Romeira* and Jana B. Nieder, “Light emitting platforms for Artificial Intelligence, Quantum Metrology and Biosensing” in International Nanoscience Student Conference (INASCON’ 18), Trondheim NTNU, Norway, August 10, 2018 [*Presenting author]

Description: Nanotech and Blockchain meeting in Trondheim NTNU, Norway. Workshop session with presentations from Embedded Nano Europe (Mats Brodén, CEO), International Nanotechnology Laboratory (Bruno Romeira), BitSpace (Manuel Lains) and Nanologica (Adam Feiler) on the future potential of utilizing Blockchain to commercialize Nanotechnology. The workshop included an open panel discussion with the invited speakers.

Posters (work not directly related with the COFUND project)

Ricardo M. R. Adão, Udayabhaskararao Thumu, Bruno Romeira, Yury V. Kolen’ko, Tangyou Sun, Jana B. Nieder, "Design and fabrication of LED chips based on novel quantum dot and perovskite materials,"  in the 15th International conference on near-field optics, nanophotonics & related techniques (NFO15), P5A6, Aug 26-31, 2018.

Ricardo M. R. Adão, Udayabhaskararao Thumu, Bruno Romeira, Yury V. Kolen’ko, Tangyou Sun, Jana B. Nieder, "Optical Characterization of Functional Materials for Improved Light Emitting Devices," in International Conference on Perovskite Photonics and Optoelectronics (PEROPTO18), Proceedings of International Conference on Perovskite Thin Film Photovoltaics, Photonics and Optoelectronics (ABXPV18PEROPTO), 118, March 01, 2018.