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Dr. João Valente

Former Project
Reconfigurable photonic metamaterials

Short CV
João Valente received his MSc degree, in 2010, from University of Aveiro and Technical University of Hamburg Harburg with the aim of an European Masters in Material Science. During this masters program his research was focused on High Dielectric Materials for Microelectronic applications. His previous graduate studies (Diploma) were conducted at New University of Lisbon and his final thesis - "Transparent Conductive Metal Oxides for Microelectronics" - was done in collaboration with Renato Archer Research Center in Campinas, Brazil. Finishing in 2007 his Material Science and Engineering Course with distinctive classification he started his research career being enrolled in different projects, from particle physics to solar cells. So far, his main work has been done in fields of Transparent Conductive Oxides for microelectronics applications, Thin Films Transistors and Sensors development. He started his PhD studies at ORC, University of Southampton in March 2012.

Joint Articles

  1. Coherent metamaterial absorption of two-photon states with 40% efficiency
    A. Lyons, D. Oren, T. Roger, V. Savinov, J. Valente, S. Vezzoli, N. I. Zheludev, M. Segev, and D. Faccio
    Phys. Rev. A 99, 011801 (2019) doi: 10.1103/PhysRevA.99.011801 - pdf
  2. 11-fs dark pulses generated via coherent absorption in plasmonic metamaterial
    V. Nalla, J. Valente, H. Sun, and N. I. Zheludev
    Opt. Express 25(19), 22620 (2017) doi: 10.1364/OE.25.022620 - pdf
  3. All-optical multichannel logic based on coherent perfect absorption in a plasmonic metamaterial
    M. Papaioannou, E. Plum, J. Valente, E. T. F. Rogers, and N. I. Zheludev
    APL Photonics 1, 090801 (2016) doi: 10.1063/1.4966269 - pdf
  4. Random access actuation of nanowire grid metamaterial
    P. Cencillo-Abad, J. Y. Ou, E. Plum, J. Valente, and N. I. Zheludev
    Nanotechnology 27, 485206 (2016) doi: 10.1088/0957-4484/27/48/485206 - pdf
  5. Nano- and micro-auxetic plasmonic materials
    J. Valente, E. Plum, I. J. Youngs, and N. I. Zheludev
    Adv. Mater. 28(26), 5176–5180 (2016) doi: 10.1002/adma.201600088 - pdf
  6. Two-dimensional control of light with light on metasurfaces
    M. Papaioannou, E. Plum, J. Valente, E. Rogers, and N. I. Zheludev
    Light Sci. Appl. 5, e16070 (2016) doi: 10.1038/lsa.2016.70 - pdf
  7. Coherent perfect absorption in deeply subwavelength films in the single-photon regime
    T. Roger, S. Vezzoli, E. Bolduc, J. P. Valente, J. J. F. Heitz, J. Jeffers, C. Soci, J. Leach, C. Couteau, N. I. Zheludev, and D. Faccio
    Nat. Commun. 6, 7031 (2015) doi: 10.1038/ncomms8031 - pdf
  8. A magneto-electro-optical effect in a plasmonic nanowire material
    J. Valente, J. Y. Ou, E. Plum, I. J. Youngs, and N. I. Zheludev
    Nat. Commun. 6, 7021 (2015) doi: 10.1038/ncomms8021 - pdf
  9. Reconfiguring photonic metamaterials with currents and magnetic fields
    J. Valente, J. Y. Ou, E. Plum, I. J. Youngs, and N. I. Zheludev
    Appl. Phys. Lett. 106, 111905 (2015) doi: 10.1063/1.4913609 - pdf

Joint Conference Contributions

  1. (poster) All optical modulators exceeding 100THz bandwidth via cohorent absorption of metamaterials
    V. Nalla, A. Karvounis, J. Valente, H. Sun, and N. I. Zheludev
    CLEO-PR, OECC & PGC 2017, Singapore 31 Jul - 4 Aug 2017
  2. Coherent absorption of two-photon states in metamaterials
    T. Roger, A. Lyons, D. Oren, V. Savinov, J. Valente, S. Vezzoli, M. Segev, N. I. Zheludev, and D. Faccio
    CLEO Europe - EQEC 2017 , Munich, Germany 25 - 29 Jun 2017
  3. Ultrafast Regimes of Coherent Absorption in Plasmonic and Dielectric Diamond-based Metasurfaces
    V. Nalla, A. Karvounis, J. Valente, H. D. Sun, and N. I. Zheludev
    ICMAT2017, Singapore, 18 - 23 Jun 2017
  4. (poster) 100 THz bandwidth optical modulators via cohorent absorption of metamaterial
    V. Nalla, A. Karvounis, J. Valente, H. Sun, and N. I. Zheludev
    IPS Meeting 2017, Singapore, 22 - 24 Feb 2017
  5. (poster) Generation of 11-fs dark pulses via coherent perfect absorption in plasmonic metamaterial
    V. Nalla, J. Valente, S. Handong, and N. I. Zheludev
    Nanometa 2017, Seefeld, Austria, 4 - 7 Jan 2017
  6. All-optical image recognition using metamaterials
    M. Papaioannou, E. Plum, E. T. F. Rogers, J. Valente, and N. I. Zheludev
    Frontiers in Optics/Laser Science 2016, Rochester, NY, USA, 17 - 21 Oct 2016
    [Finalist in the Emil Wolf student paper competition]
  7. Shape memory plasmonic metamaterial
    M. Tsuruta, J. Valente, B. Gholipour, K. F. MacDonald, E. Plum, and N. I. Zheludev
    Metamaterials 2016, Crete, Greece, 17 - 22 Sep 2016
  8. Metasystems for all-optical recognition and processing of images and data
    M. Papaioannou, E. Plum, E. T. F. Rogers, J. Valente, and N. I. Zheludev; [presenter: J. Y. Ou]
    Metamaterials 2016, Crete, Greece, 17 - 22 Sep 2016
  9. Shape memory photonic metamaterial
    M. Tsuruta, J. Valente, B. Gholipour, K. F. MacDonald, E. Plum, and N. I. Zheludev
    CLEO 2016, San Jose, CA, USA, 5 - 10 June 2016
  10. (poster) "Remote control" of coherent light absorption with entangled photons
    C. M. Altuzarra, S. Vezzoli, J. Valente. C. Soci, D. Faccio, C. Couteau, and N. I. Zheludev
    CLEO 2016, San Jose, CA, USA, 5 - 10 June 2016
  11. (poster) All-optical image recognition and processing with plasmonic metasurfaces
    M. Papaioannou, E. Plum, E. T. F. Rogers, J. Valente, B. Gholipour, and N. I. Zheludev; [presenter: B. P. Clarke]
    CLEO 2016, San Jose, CA, USA, 5 - 10 June 2016
  12. (poster) Shape memory metamaterial
    M. Tsuruta, J. Valente, B. Gholipour, K. F. MacDonald, E. Plum, and N. I. Zheludev
    New Horizons in Nanophotonics, Chicheley, UK, 23 - 24 May 2016
  13. (poster) All-optical image recognition and processing with plasmonic metasurfaces
    M. Papaioannou, E. Plum, E. T. F. Rogers, J. Valente, Nikolay I. Zheludev
    New Horizons in Nanophotonics, Chicheley, UK, 23 - 24 May 2016
  14. (invited) Reconfigurable nanomembrane metadevices
    E. Plum, J. Valente, J. Y. Ou, P. Cencillo-Abad, A. Karvounis, K. F. MacDonald, and N. I. Zheludev
    9th International Conference on Nanophotonics (ICNP 2016), Taipei, Taiwan, 21 - 25 Mar 2016
  15. (poster) Quantum coherent absorpion of plasmons with entangled photons
    C. Altuzarra, S. Vezzoli, J. Valente, C. Soci, D. Faccio, C. Couteau, N. I. Zheludev
    Nanophotonics in Asia, Osaka, Japan, 10 - 11 Dec 2015
  16. Auxetic nanomechanical metamaterials
    J. Valente, E. Plum, and N. I. Zheludev
    Materials Research Society MRS 2015 Fall Meeting & Exhibit, Boston, MA, USA, 29 Nov - 4 Dec 2015
  17. Active control of light with metasurfaces
    J. Valente, E. Plum, M. Papaioannou, P. Cencillo-Abad, V. Nalla, C. Altuzarra, S. Vezzoli, I. J. Youngs, and N. I. Zheludev
    Defence & Security Doctoral Symposium, Cranfield, UK, 25 - 26 Nov 2015
  18. (artwork) Metamaterial x Metamaterial = MM2
    J. Valente, E. Plum, I. J. Youngs and N. I. Zheludev
    Defence & Security Doctoral Symposium, Cranfield, UK, 25 - 26 Nov 2015
    [This contribution was recognized with the First Prize for the Best Installation]
  19. Coherent polarization spectroscopy of metamaterials
    K. Hiramatsu, E. Plum, J. Valente, K. F. MacDonald, and N. I. Zheludev
    Metamaterials 2015, Oxford, UK, 7 - 12 Sep 2015
  20. Coherent image processing with plasmonic metasurfaces
    M. Papaioannou, E. Plum, J. Valente, E. T. F. Rogers, and N. I. Zheludev
    Metamaterials 2015, Oxford, UK, 7 - 12 Sep 2015
  21. 100 THz Broadband and single photon optical switching with a plasmonic metamaterial
    V. Nalla, S. Vezzoli, C. M. X. Altuzarra, E. Bolduc, J. Valente, J. J. F. Heitz, J. Jeffers, J. Leach, T. Roger, C. Couteau, H. Sun, C. Soci, D. Faccio, and N. I. Zheludev
    Metamaterials 2015, Oxford, UK, 7 - 12 Sep 2015
  22. Random access photonic metamaterials
    P. Cencillo-Abad, J. Y. Ou, J. Valente, E. Plum, and N. I. Zheludev
    Metamaterials 2015, Oxford, UK, 7 - 12 Sep 2015
  23. (invited) Nanostructured photonic metamaterials reconfigurable with light, nanomechanical and electromagnetic forces
    J. Y. Ou, J. Valente, A. Karvounis, W. Wu, E. Plum, K. F. MacDonald, and N. I. Zheludev
    SPIE Optics & Photonics 2015, San Diego, CA, USA, 9 - 13 Aug 2015 - pdf
  24. 100 THz broadband optical switching with plasmonic metamaterial
    V. Nalla, S. Vezzoli, J. Valente, C. Soci, H. Sun, and N. I. Zheludev
    ICMAT2015, Singapore, 28 Jun - 3 Jul 2015
  25. (poster) Coherent perfect absorption of a single photon in a metamaterial
    S. Vezzoli, C. Altuzarra, T. Roger, J. Valente, E. Bolduc, J. Heitz, J. Leach, J. Jeffers, C. Soci, C. Couteau, N. I. Zheludev, and D. Faccio
    ICMAT2015, Singapore, 28 Jun - 3 Jul 2015
  26. Dynamic mode multiplexing with plasmonic metasurfaces
    M. Papaioannou, E. Plum, J. Valente, E. T. F. Rogers, and N. I. Zheludev
    CLEO/Europe-EQEC 2015, Munich, Germany 21 - 25 Jun 2015
  27. Reconfigurable gradient metasurfaces with random access
    P. Cencillo-Abad, J.-Y. Ou, J. Valente, E. Plum, and N. I. Zheludev
    CLEO/Europe-EQEC 2015, Munich, Germany 21 - 25 Jun 2015
  28. Coherent spectroscopy of optical activity
    K. Hiramatsu, E. Plum, J. Valente, K. F. MacDonald, and N. I. Zheludev
    CLEO/Europe-EQEC 2015, Munich, Germany 21 - 25 Jun 2015
  29. 100 THz optical switching with plasmonic metamaterial
    V. Nalla, S. Vezzoli, J. Valente, H. Sun, and N. I. Zheludev
    CLEO/Europe-EQEC 2015, Munich, Germany 21 - 25 Jun 2015
  30. (keynote) Metamaterials: a playground for light
    J. Valente, and N. I. Zheludev
    STEM TEAtime - Workshop on Light, Southampton, UK, 19 Mar 2015
  31. 100 THz bandwidth plasmonic metamaterial switch
    V. Nalla, J. Valente, S. Vezzoli , C. Soci, H. Sun, and N. I. Zheludev
    IPS Meeting, Singapore, 4 - 6 Mar 2015
  32. (poster) Metamaterial coherent plasmonic absorption with a single photon
    C. Altuzarra, S. Vezzoli, T. Roger, E. Bolduc, J. Valente, J. Heitz, J. Jeffers, J. Leach, C. Couteau, C. Soci, N. I. Zheludev, and D. Faccio
    IPS Meeting, Singapore, 4 - 6 Mar 2015
  33. Metamaterial coherent plasmonic absorption with a single photon
    C. Altuzarra, S. Vezzoli, T. Roger, E. Bolduc, J. Valente, J. Heitz, J. Jeffers, J. Leach, C. Couteau, C. Soci, N. I. Zheludev, D. Faccio, and T. Roger
    Nanometa 2015, Seefeld, Austria, 5 - 8 Jan 2015
  34. (poster) Randomly addressable reconfigurable photonic metamaterials
    P. Cencillo-Abad, J. Y. Ou, J. Valente, E. Plum, N. I. Zheludev
    Nanometa 2015, Seefeld, Austria, 5 - 8 Jan 2015
  35. (poster) 100 THz bandwidth all-optical switching using coherent absorption in plasmonic metamaterials
    V. Nalla, J. Valente, H. Sun, N. I. Zheludev
    Nanometa 2015, Seefeld, Austria, 5 - 8 Jan 2015
  36. (invited) Giant nonlinearities in plasmonic and dielectric reconfigurable metamaterials
    N. I. Zheludev, K. F. MacDonald, E. Plum, J.-Y. Ou, J. Valente, A. Karvounis, W. Wu
    2014 MRS Fall Meeting, Boston, MA, USA, 30 Nov - 5 Dec 2014
  37. (invited) Giant optical nonlinearity and magnetoelectric effect in reconfigurable plasmonic metamaterials
    E. Plum, J. Valente, J. Y. Ou, K. F. MacDonald, and N. I. Zheludev
    Metamaterials'2014, Copenhagen, Denmark, 25 - 30 Aug 2014
  38. Metamaterial NEMS: giant optical nonlinearity and magnetoelectric effect
    J. Valente, J. Y. Ou, E. Plum, K. F. MacDonald, and N. I. Zheludev
    OMN2014 - International Conference on Optical MEMS and Nanophotonics, Glasgow, Scotland, 17 - 21 Aug 2014
  39. Lorentz force metamaterial with giant optical magnetoelectric response
    J. Valente, J. Y. Ou, E. Plum, I. Youngs, and N. I. Zheludev
    CLEO:2014, San Jose, CA, USA, 8 - 13 Jun 2014
  40. (invited) Nanomechanical metamaterial light modulators
    E. Plum, J. Y. Ou, J. Valente, P. Cencillo-Abad, and N. I. Zheludev
    META'14, Singapore, 20 - 23 May 2014
  41. Reconfigurable photonics metamaterials: nanoscale forces and giant magnetoelectric effect
    J. Valente, E. Plum, J. Y. Ou, and N. I. Zheludev
    DSTL Novel Electronic Materials PhD Theme Event, London, 17 Dec 2013
  42. (poster) Reconfigurable photonics metamaterial: observation of a giant magnetoelectric effect
    J. Valente, E. Plum, J. Y. Ou, and N. I. Zheludev
    DSTL Novel Electronic Materials PhD Theme Event, London, 17 Dec 2013
  43. (keynote) Driving reconfigurable photonic metamaterials with light and electrical signals: exploiting forces and fields at the nanoscale
    N. I. Zheludev, E. Plum, K. F. MacDonald, J. Y. Ou, J. Zhang, J. Valente, W. M. Zhu, and A. Q. Liu
    Metamaterials' 2013, Bordeaux, France, 16 - 19 Sep 2013
  44. (invited) Reconfigurable photonic metamaterials driven by Coulomb, Lorentz and optical forces
    E. Plum, J. Y. Ou, J. Valente, and N. I. Zheludev
    International Conference on Nanomaterials 2013 (ICN 2013), London, Ontario, Canada, 12 - 16 Aug 2013
  45. Reconfigurable metamaterials controlled by Lorentz, Ampere and Coulomb forces: towards GHz bandwidth
    J. Valente, E. Plum, J. Y. Ou, and N. I. Zheludev
    CLEO/Europe - IQEC 2013, Munich, Germany, 12 - 16 May 2013
  46. (invited) Nanomechanical control of metamaterial optical properties
    E. Plum, J. Y. Ou, J. Valente, J. Zhang and N. I. Zheludev
    IPS Meeting 2013, Singapore, 4 - 6 Mar 2013
  47. (poster) Reconfiguring photonic metamaterials with electrical currents
    J. Valente, E. Plum, N. I. Zheludev
    National PhD Scheme Conference 2013, Oxford, UK, 27 Feb 2013
  48. (invited) Reconfiguring photonic metamaterials with electromagnetic forces
    E. Plum, J. Y. Ou, J. Valente, J. Zhang, and N. I. Zheludev
    Nanometa 2013, Seefeld, Austria, 3 - 6 Jan 2013
  49. (poster) Tunable plasmonic luminescence in reconfigurable metamaterials
    G. Adamo, W. T. Chen, E. Plum, J. K. So, J. Valente, D. P. Tsai, and N. Zheludev
    Nanometa 2013, Seefeld, Austria, 3 - 6 Jan 2013
  50. (invited) Reconfiguring photonic metamaterials
    E. Plum, J. Y. Ou, J. Valente, J. Zhang, and N. I. Zheludev
    Sino-UK Workshop on Nanophotonics and Metamaterials, Beijing, China, 7 - 8 Dec 2012

 

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