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H2020Staff exchange2015–2019

CoExAN · Collective Excitations in Advanced Nanostructures

Horizon 2020 — Marie Skłodowska-Curie Actions

Duration
2015-10-01 → 2019-09-30
EU contribution
€1,003,500
Participants
9
Scheme
MSCA-RISE

Lines connect the coordinator with its partners.

Results in brief

Collective Excitations in Advanced Nanostructures

CoExAN brings together experimentalists and theoreticians working in synergy to boost the development of new nano-sized sources of electromagnetic radiation which will become major building blocks of future high performing electronic devices based on carbon nanostructures. The idea is to develop carbon based nano-circuits which are able to generate, detect and process broadband electromagnetic (EM) signals. The overall final objective is to design novel advanced nanostructure-based optoelectronic devices including microwave, terahertz and light generators, detectors and frequency modulators, with important technological applications ranging from space to everyday life. We have studied excitonic and plasmonic collective effects in CNTs (especially narrow-band quasi-metallic ones, where excitonic effects are largely overlooked) and in few-layer planar Dirac materials such as graphene, silicene and germanene. We have also studied collective photonics phenomena stemming from the quantum nature of light and look at sophisticated arrangements of carbon-based and other nanostructures in arrays or placing them in microcavities, thus utilizing the significant expertise of the participating groups in quantum optics. Our overall objectives include the theoretical microscopic understanding of new graphene-like materials, the search for their new physical properties, their use in new devices, including their design, planning and possibly their production.

Data: CORDIS, © European Union

Project objective

This project aims to develop, fabricate, theoretically and experimentally study carbon based nano-circuits which are able to generate, detect and process broadband electromagnetic (EM) signals. The carbon nanoscale EM sources can be based, in particular, on Cherenkov radiation emerging when electrons move inside carbon nanotubes (CNTs) or between spatially separated graphene sheets. The frequency of the Cherenkov radiation depends on the CNT radius and chirality or on the distance between graphene sheets. The performance of carbon EM nano-emitters is determined by the electron momentum relaxation time, which can be determined by measuring the generated THz and microwave fields. The frequency of the emitted EM radiation can be tuned by acoustic waves that provide distributed feedback for the EM wave. As well, the effects originating from strong coupling between material excitations in carbon-based structures and confined optical modes of microcavities will be investigated. The formation of polariton modes and their collective properties will be analyzed theoretically. Another set of problems to be considered in the proposed research is associated with the quantum mechanics and quantum optics of carbon-based nanostructures. We will look at excitonic and plasmonic collective effects in CNTs (especially narrow-band quasi-metallic ones, where excitonic effects are largely overlooked) and in few-layer planar Weyl materials such as graphene, silicene and germanene. We will also study collective photonics phenomena stemming from the quantum nature of light and look at sophisticated arrangements of carbon-based and other nanostructures in arrays or placing them in microcavities, thus utilizing the significant expertise of some of the participating groups in quantum optics aiming eventually at a design and feasibility study of novel advance-nanostructure-based optoelectronic devices including microwave, terahertz and light generators, detectors and frequency modulators.

Original text from CORDIS.

Participants

  • UNIVERSITA DEGLI STUDI DI ROMA TOR VERGATA · RomaCoordinatorItaly
  • BELARUSIAN STATE UNIVERSITY · MinskBelarus
  • CONSIGLIO NAZIONALE DELLE RICERCHE · RomaItaly
  • DE LA SALLE UNIVERSITY · ManilaPhilippines
  • HASKOLI ISLANDS · ReykjavikIceland
  • ITA-SUOMEN YLIOPISTO · KUOPIOFinland
  • THE UNIVERSITY OF EXETER · ExeterUnited Kingdom
  • V.E. LASHKARYOV INSTITUTE OF SEMICONDUCTOR PHYSICS OF THE NATIONAL ACADEMY OF SCIENCE OF UKRAINE · KyivUkraine
  • YEREVAN STATE UNIVERSITY FOUNDATION · YerevanArmenia

Links

Data: CORDIS, © European Union