Open positions

2021 Summer Job: Temporal modulation for exceeding conventional limitations in electromagnetic (optical) engineering.
Code: [META1]
Temporal modulation for exceeding conventional limitations in electromagnetic (optical) engineering

Walking in the nature, we sometimes ponder that as time ruthlessly travels forward, objects of nature change slowly or fast, and, therefore, we observe different characteristics which we attribute to those objects (recall, for instance, the contrast between spring and autumn days when the colour of the trees spectacularly changes continuously in time). This basic lesson from nature suggests that also in different branches of science and technology, if systems are not supposed to be immutable, but, instead, they change in time with a reasonable speed, we may control and engineer the responses of those systems in the desired way. Electromagnetic engineers know this fact, and, hence, they effectively use the concept of “temporal variation” to manipulate the responses of electromagnetic systems (including circuits, materials, surfaces, and so forth).

For example, imagine that our friend shines green light obliquely at a thin material sheet, and some meters away, standing at the right angle, we see green colour detected by our eyes. This is expected. No surprise. However, our friend, who has graduated from our department and remembers the secret by heart, properly changes the effective parameters of that thin sheet in time such that we see a rainbow with different colours around us. YES, a thin time-varying surface has this efficacy to reflect different colours while it is illuminated with only green colour.

Professor Tretyakov and his group are currently working in this emerging research area (time-space modulated electromagnetic systems) and look forward to working with a fervid and enthusiastic student as a summer trainee. The student will be warmly supervised by the professor and immensely supported by other research group members. The student will learn interesting theories in electromagnetic/optical science and do outstanding original research. The topic and tasks would be adjusted following the interests and background of the trainee. In addition, the student will learn how to write scientific reports/papers, establish scientific arguments, and present scientific results. Therefore, it is certain that the accepted student will enjoy the summer.

For more information, please do not hesitate and contact Professor Sergei Tretyakov: sergei.tretyakov “at” aalto.fi or Doctor M. Sajjad Mirmoosa: mohammad.mirmoosa “at” aalto.fi.

References

  1. N. Engheta, Metamaterials with high degrees of freedom: Space, time, and more, Nanophotonics 20200414 (2020).
  2. M. S. Mirmoosa, T. T. Koutserimpas, G. A. Ptitcyn, S. A. Tretyakov, and R. Fleury, Dipole polarizability of time-varying particles, arXiv:2002.12297 (2020).
  3. X. Wang, G. Ptitcyn, A. Diaz-Rubio, V. S. Asadchy, M. S. Mirmoosa, S. Fan, and S. A. Tretyakov, Nonreciprocity in bianisotropic systems with uniform time modulation, arXiv:2001.02213 (2020).
  4. M. S. Mirmoosa, G. A. Ptitcyn, V. S. Asadchy, and S. A. Tretyakov, Time-varying reactive elements for extreme accumulation of electromagnetic energy, Phys. Rev. Appl. 11, 014024 (2019).

Submit your application through our recruiting system.

Please include the following documents:

  • CV and a short motivation letter.
  • Study records.

You can apply for one or several of the open positions. Above, only positions offered by our group are presented. All positions are listed here (aalto.fi). Please mark the codes of the positions you are interested in under the field “Further information on the positions that you are interested in”. Prioritize your choices with numbers; 1.) code for your first choice, 2.) code for your second choice, etc.

Application period closes on 8 February 2021, but we will start reviewing candidates immediately. .

2021 Summer Job: Design of efficient wireless power transfer systems based on transmission line-embedded antennas.
Code: [META2]
Design of efficient wireless power transfer systems based on transmission line-embedded antennas.
Design of efficient wireless power transfer systems based on transmission line-embedded antennas.

Wireless power transfer (WPT) technology has been applied in many applications including medical implants, consumer electronics, and electric vehicle charging. This project aims to study and optimize a new WPT system based on screened loop antennas. The proposed solution can be greatly beneficial for WPT applications in medical implants and magnetic resonance imagining (MRI) coils. In the project, different designs of screened loop antennas will be analyzed in different situations to find the maximum efficiency and optimize power transfer.

The candidate will support the project team in simulating different electromagnetic structures and analyze the results. If you are excited about understanding the latest advances of WPT technology and have fundamental knowledge in electromagnetics, this will be an ideal opportunity for you. The experience with electromagnetics simulation tools (e.g. CST, COMSOL) will be advantageous for this position. The successful candidate will join a multidisciplinary research group with an excellent environment for learning and further developing the idea.

For more information, please do not hesitate and contact Professor Sergei Tretyakov: sergei.tretyakov “at” aalto.fi or Mr. Masoud Sharifian Mazraeh Mollaei: masoud.2.sharifianmazraehmollaei "at" aalto.fi.

Submit your application through our recruiting system.

Please include the following documents:

  • CV and a short motivation letter.
  • Study records.

You can apply for one or several of the open positions. Above, only positions offered by our group are presented. All positions are listed here (aalto.fi). Please mark the codes of the positions you are interested in under the field “Further information on the positions that you are interested in”. Prioritize your choices with numbers; 1.) code for your first choice, 2.) code for your second choice, etc.

Application period closes on 8 February 2021, but we will start reviewing candidates immediately. .

2021 Summer Job: Free-positioning wireless power transfer systems for movable small electric vehicles.
Code: [META3]
Free-positioning wireless power transfer systems for movable small electric vehicles

There has been an increased usage of automated electric movers in many applications including, warehouse robots, retail robots, healthcare robots, and delivery drones. Electrification of these devices has become a challenge with classical plugged-in or docking charging because of range anxiety, reliability issues, downtime needed for charging, and high operating cost.

Our research group has proposed disruptive wireless charging solution facilitate trouble-free charging for moving autonomous electric movers. The proposed free-positioning wireless charging enables the devices to be charged wirelessly in a large area with a high-efficiency above 95% regardless of the receiver position or orientation. The team is now bringing this project to next level by developing the solution for charging real autonomous robots wirelessly. If you are passionate to be a part of a team developing next-generation wireless charging solutions that can be directly applied in commercial products, this is an ideal opportunity for you. Your knowledge in power electronics and control systems will be an added advantage for this position.

This is a collaborative project between the Department of Electronics and Nanoengineering and the Department of Electrical Engineering and Automation. You will have a great opportunity to improve yourself and learn new and emerging technologies in a multi-disciplinary research environment with very strong theoretical and practical expertise. There is a possibility to complete investigations and present them as a special assignment or to continue working towards a master thesis.

For more information, please do not hesitate and contact Dr. Prasad Jayathurathnage: prasad.jayathurathnage “at” aalto.fi or Prof. Sergei Tretyakov: sergei.tretyakov “at” aalto.fi.

Submit your application through our recruiting system.

Please include the following documents:

  • CV and a short motivation letter.
  • Study records.

You can apply for one or several of the open positions. Above, only positions offered by our group are presented. All positions are listed here (aalto.fi). Please mark the codes of the positions you are interested in under the field “Further information on the positions that you are interested in”. Prioritize your choices with numbers; 1.) code for your first choice, 2.) code for your second choice, etc.

Application period closes on 8 February 2021, but we will start reviewing candidates immediately. .


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