Congratulations to Miguel Camacho Aguilar, who has passed his viva. His thesis title was “Microwave response of finite periodic metal structures”. The examiners were Prof. Guido Valerio from University Pierre and Marie Curie in Paris and Prof. Matthew Browning from University of Exeter.
Miguel will be starting a postdoctoral role in the group of Prof. Nader Engheta at the University of Pennsylvania on 1st March. His future work in the US will be related to metamaterials and plasmonics. Nader invented the field of metatronics, i.e., metamaterial-based optical nano circuitry, in which properly designed nano structures function as “lumped’ optical circuit elements such as optical capacitors, optical inductors and optical resistors. We wish Miguel the best of luck in his new role and career.
Below is a summary of the various publications and conferences that Miguel participated in, along with his thesis abstract. Other notable achievements include his recent Spanish national award for best Physics undergraduate student (class of 2015) and participating in Nanotech PhD student scheme with IOP Publishing in 2017.
Keep up to date with Miguel’s latest research at https://scholar.google.co.uk/citations?user=62eJgVAAAAAJ&hl=en.
Miguel is author/co-author on the following publications:
- Computationally efficient analysis of extraordinary optical transmission through infinite and truncated subwavelength hole arrays (Physical Review E)
- Resonantly induced transparency for metals with low angular dependence (Applied Physics Letters)
- Theoretical and experimental exploration of finite sample size effects on the propagation of surface waves supported by slot arrays (Physical Review B)
- Comparative study between resonant transmission and extraordinary transmission in truncated periodic arrays of slots (2017 IEEE MTT-S NEMO Proceedings)
- Designer surface plasmon dispersion on a one-dimensional periodic slot metasurface with glide symmetry (Optics Letters)
- Mimicking glide symmetry dispersion with coupled slot metasurfaces (Applied Physics Letters)
- On the Extraordinary Optical Transmission in parallel plate waveguides for non-TEM modes (Optics Express)
- Dispersion of surface waves supported by truncated metasurfaces (2017 IEEE APS/URSI Symposium)
- Hidden dimensions make broadband metasurfaces (News article) (Nanotechweb IOP)
- Efficient numerical analysis of extraordinary transmission through one-dimensional periodic arrays of slots (under review-IEEE Transactions on Antennas and Propagation)
- Analysis of the diffraction by the truncation of a planar array of dipoles using the Wiener-Hopf approach (under review- Wave Motion)
- Far-Field and Near-Field Physics of Extraordinary THz Transmitting Antennas (under review- IEEE Transactions on Antennas and Propagation)
Miguel attended the following conferences during his degree:
- Exeter Microwave Metamaterials Meeting 2015 (Exeter, UK, Poster: Resonant microwave transmission through thin metal layers using 2D arrays)
- CIMTEC 2016 (Perugia, Italy, Presentation: Resonant Transmission through Thin Metal Layers using Two Dimensional Arrays)
- International Workshop on Metamaterials by Design (Riva del Garda, Italy, Poster: Efficient Analysis of Extraordinary Transmission Through Metallic Screens Perforated With Finite Periodic Arrays of Slots)
- IEEE Antenna and Propagation Symposium (San Diego, USA, Presentation: Dispersion of Surface Waves Supported by Truncated Metasurfaces)
- Metamaterials 2017 (Marseille, France, Presentation: Coupled slot metasurfaces with spoof glide symmetry)
- European School of Antennas Siena, Italy n/a
- Exeter Microwave Metamaterials Meeting 2017 (Exeter, UK, Presentation: Efficient analysis of the electromagnetic scattering by non-periodic hole arrays)
- Iberian Meeting on Computational Electromagnetics (Coimbra, Portugal, Presentation: Wiener-Hopf analysis of the scattering by a two dimensional periodic semi-infinite array of dipoles)
- IEEE Antenna and Propagation Symposium (Boston, USA, Presentation: Wiener-Hopf analysis of the scattering by a two dimensional periodic semi-infinite array of dipoles)
Miguel’s thesis abstract:
This thesis focuses on the study of the perturbations of the microwave response of large finite arrays introduced by truncations. To do so very efficient analysis methods based on the method of moments are developed and implemented for different types of truncated slot/patch arrays. The physical insight gained from the analysis of the microwave response of truncated arrays will help in the engineering of new types of metasurfaces that take full advantage of the knowledge provided in here on the different mechanisms governing the coupling between surface waves and free space radiation. The first part of the thesis deals with the efficient analysis of the electromagnetic scattering by two-dimensional and one-dimensional periodic arrays of slots, as well as by finite arrays of slots in perfectly conducting surfaces. In a second part of the thesis, the canonical problem of the electromagnetic scattering by a semi-infinite array of dipoles (the complementary problem to that of slots) is analysed using a rigorous derivation using the Wiener-Hopf approach, that allows for the analytical separation of the different contributions to the current distributions on the array. Finally, the effect introduced by the introduction of higher symmetries into the dispersion relation of modulated infinite slot metasurfaces is numerically and experimentally explored. It is shown that these lead to low-dispersive ultra-wideband metasurfaces. A design method is proposed for the design of lower-symmetric metasurfaces with similar characteristics which is validated for the design of mirror-symmetric leaky-wave metasurface antenna.