ECTS - University of Pisa
Interazione di onde elettromagnetiche con strutture periodiche come ad esempio Photonic Bandgap (PBG) materials e metasuperfici.
The student who successfully completes the course will have the ability to understand electromagnetic phenomena related to time-varying electromagnetic fields. The student will be aware of the techniques, such as discrete Fuorier trasnform, used to analyze wave propagation in complex materials characterized by frequency dispersion. He or she will have a basic knowledge of materials formed by periodic structures formed by dielectrics and metallic particles. In particular, photonic bandgap materials and metasurfaces are treated. The student will have knowledge of inversion approaches for computing dielectric and magnetic properties of materials and will understand how to desing wireless sensors based on the interaction of printed resonators with functionalized materials.
Esame orale.
During the oral exam, the student must be able to demonstrate his/her ability to report and expose on a project assigned by the teacher at the end of the course. Moreover, during the oral exam the student must demonstrate a solid knowledge of the course material and discuss the reading matter thoughtfully and with propriety of expression.
Capacità di affrontare un problema pratico relativo all'interazione delle onde con strutture periodiche mediante metodologie approssimate.
Student will be able to extract the most important concepts from advanced topics. He will be also able to prepare a code for solving a practical electromagnetic problem and to presents the results though a brief presentation and a technical paper.
Progettino da sviluppare in Matlab e mediante simulatore elettromagnetico (CST Microwave studio)
Oral exam and discussion about a project assigned by the teacher at the end of the course.
Raccolta di dati numerici e sperimentali mediante l'uso di simulatori elettromagnetici e strumenti di misura.
Students will acquire accuracy and precision when collecting and analysing experimental data.
Progettino da sviluppare in Matlab e mediante simulatore elettromagnetico (CST Microwave studio)
During group work, the methods of assigning responsibility, management and organisation during the project phases will be evaluated
Linee di trasmissione.
Transmission and reflection of plane waves on interfaces. Transmission lines.
For students without a background in physics, it is suggested to follow the course ELECTROMAGNETIC MATERIALS of Prof. Genovesi.
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lezioni frontali con l'uso di slide e lezioni di laboratorio in cui si utilizzano Matlab e software elettromagnetici. Sono previste anche atttività di laboratorio.
Face to face lectures with slides and Matlab laboratory sessions to fix the most important concepts with practical implementations.
CONCETTI DI BASE: Proprietà dei materiali ordinari (dielettrici, magnetici, conduttori), modelli di dispersione (Lorentz, Debye, Drude), Trasfomata discreta di Fourier. Plasmoni di superficie.
STRUTTURE PERIODICHE: Teoria delle strutture periodiche (1D, 2D, 3D), diagramma di dispersione, teorema di Floquet, cristalli fotonici, superfici selettive in frequenza (FSS), metasuperfici, e superfici artificiali di imepdenza, sensori passivi wireless.
LABORATORIO: Attività di laboratorio su PBG e metasuperfici mediante l'uso di simulatori elettromagnetici, Matlab e strumenti di misura ad onfa millimetrica (VNA, guide d'onda, antenne).
BASICS: General properties of materials, polarization phenomena, propagation through dispersive materials, properties of conductors (surface impedance), dispersion models (Lorentz, Debye, Drude), Discrete Fourier Transform. Surface Plasmoons and sensing applications.
PERIODIC STRUTURES: Theory of periodic structures, dispersion diagram of 2D periodic structures, Fouquet theorem, Photonic Crystals, Frequency Selective Surfaces, metasurfaces and artificial impedance surfaces, wireless passive sensors.
LABORATORY ACTIVITY: Laboratory activity on PBG and metasurfaces by using electromagnetic software, Matlab and measurement equipments.
Slide fornite dal docente.
Solymar, Laszlo, and Ekaterina Shamonina. Waves in metamaterials. Oxford University Press, 2009.
A. Balanis, Advanced engineering electromagnetics. John Wiley & Sons, 2012.
Ben A. Munk, Frequency selective surfaces: theory and design. John Wiley & Sons, 2005
Johnson, Steven G., and John D. Joannopoulos. Photonic crystals: the road from theory to practice. Springer Science & Business Media, 2001.
Utilizzare le slide e il materiale fornito dal docente. Contattare il docente per le tracce dei progettini.
Download the slides from elearn.ing.unipi.it and repeat the laboratory exercises on matlab. Ask the teacher for a project well before oral examination.
Discussione progetto e esame orale (30-45 minuti totali).
Development of a project, preparation of a technical note and a ppt presentation. Discussion on the project during the oral exam and addtional questions on the program.
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