Welcome to PhD course: Antenna models and Graphene plasmonics
Description: The course consists of a lecture series and sessions of problem solving. The course will span a total of two weeks devoted to antenna modelling and graphene plasmonics, respectively.
Modeling of optical, THz and microwave antennas using Greens function surface integral equation methods
This part of the Ph. D course will cover theoretical modeling of antennas for both optical, THz, and microwave frequencies by solving Maxwell’s equations for 3D antenna problems using Greens function surface integral equation methods (GFSIEMs) [1]. The technique relies on the electric field integral equation (EFIE) that expresses the electric field at any position as an overlap integral between a Greens tensor and currents at the antenna surface. In the case of antennas for longer wavelengths, such as for the THz and microwave regimes, a perfect conductor approximation may be applied, which greatly reduces the computational task. For optical antennas such an approximation is not valid, and the penetration into the metal parts of the antennas will be considered in detail.
The course will cover the following topics:
The electric-field integral equation for 3D scattering problems
Numerical implementations of the EFIE for general antenna geometries and for antennas with cylindrical symmetry
Numerical studies of a range of optical, THz and microwave antennas using GFIEMs. This will include a study of resonances and field enhancements, near-fields, and far-field radiation patterns.
The main course material will be Ref. [1] supplemented by handouts with numerical exercises.
[1] Thomas M. Søndergaard, “Greens Function Integral Equation Methods in Nano-Optics”, CRC Press 2018.
Graphene plasmonics
The starting point for this part will be a general presentation of the optical properties of graphene in the presence of doping. Then, plasmons in thin film geometries will be considered and applied to graphene systems. We also study nanoscale geometries such as ribbons and disks, and the influence of magnetic fields. During the lectures and problem solving, focus will be on the following issues:
Optical properties of graphene
Thin film plasmons
Plasmons in nanostructures graphene
Graphene magnetoplasmons
Atomistic vs. continuum models
Lecture notes: T.G. Pedersen “Electric, optical and magnetic properties of nanostructures” link
Organizer: Prof. Thomas Garm Pedersen, tgp@mp.aau.dk
Lecturers: Prof. Thomas Garm Pedersen, Assoc. Prof. Thomas Søndergaard, both Dept. of Materials and Production
ECTS: 3.0
Time: March 11-15 and 18- 22, each day from 9.00 to 15.00
Place: Aalborg University
City:
Deadline: February 18, 2019
Important information concerning PhD courses: We have over some time experienced problems with no-show for both project and general courses. It has now reached a point where we are forced to take action. Therefore, the Doctoral School has decided to introduce a no-show fee of DKK 5,000 for each course where the student does not show up. Cancellations are accepted no later than 2 weeks before start of the course. Registered illness is of course an acceptable reason for not showing up on those days. Furthermore, all courses open for registration approximately three months before start. This can hopefully also provide new students a chance to register for courses during the year. We look forward to your registrations.
Description: The course consists of a lecture series and sessions of problem solving. The course will span a total of two weeks devoted to antenna modelling and graphene plasmonics, respectively.
Modeling of optical, THz and microwave antennas using Greens function surface integral equation methods
This part of the Ph. D course will cover theoretical modeling of antennas for both optical, THz, and microwave frequencies by solving Maxwell’s equations for 3D antenna problems using Greens function surface integral equation methods (GFSIEMs) [1]. The technique relies on the electric field integral equation (EFIE) that expresses the electric field at any position as an overlap integral between a Greens tensor and currents at the antenna surface. In the case of antennas for longer wavelengths, such as for the THz and microwave regimes, a perfect conductor approximation may be applied, which greatly reduces the computational task. For optical antennas such an approximation is not valid, and the penetration into the metal parts of the antennas will be considered in detail.
The course will cover the following topics:
The electric-field integral equation for 3D scattering problems
Numerical implementations of the EFIE for general antenna geometries and for antennas with cylindrical symmetry
Numerical studies of a range of optical, THz and microwave antennas using GFIEMs. This will include a study of resonances and field enhancements, near-fields, and far-field radiation patterns.
The main course material will be Ref. [1] supplemented by handouts with numerical exercises.
[1] Thomas M. Søndergaard, “Greens Function Integral Equation Methods in Nano-Optics”, CRC Press 2018.
Graphene plasmonics
The starting point for this part will be a general presentation of the optical properties of graphene in the presence of doping. Then, plasmons in thin film geometries will be considered and applied to graphene systems. We also study nanoscale geometries such as ribbons and disks, and the influence of magnetic fields. During the lectures and problem solving, focus will be on the following issues:
Optical properties of graphene
Thin film plasmons
Plasmons in nanostructures graphene
Graphene magnetoplasmons
Atomistic vs. continuum models
Lecture notes: T.G. Pedersen “Electric, optical and magnetic properties of nanostructures” link
Organizer: Prof. Thomas Garm Pedersen, tgp@mp.aau.dk
Lecturers: Prof. Thomas Garm Pedersen, Assoc. Prof. Thomas Søndergaard, both Dept. of Materials and Production
ECTS: 3.0
Time: March 11-15 and 18- 22, each day from 9.00 to 15.00
Place: Aalborg University
City:
Deadline: February 18, 2019
Important information concerning PhD courses: We have over some time experienced problems with no-show for both project and general courses. It has now reached a point where we are forced to take action. Therefore, the Doctoral School has decided to introduce a no-show fee of DKK 5,000 for each course where the student does not show up. Cancellations are accepted no later than 2 weeks before start of the course. Registered illness is of course an acceptable reason for not showing up on those days. Furthermore, all courses open for registration approximately three months before start. This can hopefully also provide new students a chance to register for courses during the year. We look forward to your registrations.
- Teacher: Thomas Garm Pedersen