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Poster session II
Enhancement of Light Emission Using ZnO Grating Nanowires: An Experimental and Numerical Study
Fatima Omeis (1), Rafik Smaali (2), Aubry Marin (2), Audrey Potdevin (2), Francois Réveret (2), Emmanuel Centeno (2), Elena Silaeva (1), Yves Jourlin (1), Geneviève Chadeyron (2), Michel Langlet (3)
(1)Université Jean Monnet (France), (2)Université Clermont Auverge (France), (3)Université Grenoble Alpes (France)
White Light Emitting Diodes (WLEDs) with improved light emission in the red region are highly desired for many applications especially for obtaining warm illumination. In this work, we provide an experimental and theoretical study for a grating structure composed of ZnO nanowires (NWs) that proves to boost and directionally extract the visible and red light emission. The experimental results are compared with a theoretical and numerical model to understand this unique optical behavior.
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PIFA Multi-layers for smart watch application in the 2.4 GHz for the Bluetooth Low Energy BLE
Abdelhakim Adli, Marta Cabedo-Fabrés, Miguel Ferrando Bataller
Universitat Politècnica de València (Spain)
This paper presents a Planar Inverted-F Antenna (PIFA) design for a smartwatch application, optimized to operate on the 2.4 GHz Bluetooth frequency band, on the proximity of the human forearm. . By a multi-layer substrate, half air half rubber we obtain a return loss of -20 dB is obtained at 2.4 GHz, and an efficiency of -5 dB, which represents a good efficiency taking into account the effect of the human forearm.
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Towards efficient detection and spectroscopy of photons emitted by Er3+ ions in silicon
Attilio Zilli (1), Michele Castriotta (1), MIchele Celebrano (1), Giorgio Ferrari (1), Lamberto Duo (1), Marco Finazzi (1), Enrico Prati (2)
(1)Politecnico di Milano (Italy), (2)Consiglio Nazionale delle Ricerche (Italy)
We develop a highly sensitive apparatus for efficient room temperature detection of the emission by Er3+ ions co-implanted with oxygen atoms in a Si substrate. Our setup proves to be capable of detecting a lower bound value for the emission intensity of about 104 photons/s, corresponding to an ion surface concentrations down to 1012 cm-2. Yet, the open challenge we aim here is to retrieve the spectroscopic fingerprint of Er3+ with high resolution at these low concentrations.
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online, live
Stamatios Amanatiadis (1), Vasileios Salonikios (1), Michalis Nitas (1), Theodoros Zygiridis (2), Nikolaos Kantartzis (1), Traianos Yioultsis (1)
(1)Aristotle University of Thessaloniki (Greece), (2)University of Western Macedonia (Greece)
The plane wave scattering on graphene micro-disks is investigated numerically in the present work. Initially, the propagation properties of the supported surface waves on the 2D material are studied theoretically. Then, the plasmonic resonant frequencies of a circular graphene scatterer are identified via the broadband analysis of the absorption cross-section. Finally, the radar cross-section of the same setup is examined, indicating that the resonant frequencies are optimal for forward propagation, thus enabling the effective beam manipulation.
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The Numerical Results of the Magnetic Behavior of the Thin-layers SFCL
online, live
Salah Belkhiri (1), Fethi Ben Mebarek (2), Mohamed Lotfi Khene (2)
(1)University of M'Sila (Algeria), (2)University of Biskra (Algeria)
The performance of superconducting current limiters associating the short-circuit phenomenon depends on the structure of the superconducting material envisaged and on the way of inserting it into the electrical network. In this paper, we present some numerical results of the magnetic behavior of superconducting fault current limiters (SFCLs). To describe the relationship between the electric field and the current density inside the thin-film superconductor.
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online, live
Sarosh Ahmad (1), Shuvra Barua (2), Ayesha Akram (3), Bilal Manzoor (4)
(1)University Faisalabad (GCUF) (Pakistan), (2)Ahsanullah University of Science and Technology (AUST) (Bangladesh), (3)University of Lahore (Pakistan), (4)University of Engineering and Technology (UET) (Pakistan)
This study presents an Industrial, Scientific, and Medical (ISM) band at 915 MHz. There are four slotted resonators in this patch, which are installed on a flexible Roger Duroid RT5880 substrate with a typical 0.254 mm thickness. The suggested antenna's overall dimensions are 7mm x 7mm x 0.254 mm, and it spans a frequency range of 800 MHz to 1 GHz (200 MHz) under the skin tissue.
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Statistical Analysis of Matching Properties of Randomly Distributed Thin and Thick Dipoles
online, live
Imad Adjali, Benoit Poussot, Shermila Mostarshedi, Jean-Marc Laheurte
Université Gustave Eiffel (France)
A statistical analysis of the matching properties of a dipole surrounded by thin and thick randomly distributed loaded dipoles is presented. The input impedance and input reflection coefficient of the driven dipole is obtained by using the IEMF method and validated by NEC and measurements. The cumulative distributed functions are presented for different dipole densities and the mismatch of a surrounded thin or thick dipole is studied for different surrounding loads.
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