Post-doc in the Design and Fabrication of Metasurfaces for Next Generation Light Detectors

onsdag 03 nov 21

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Frist 12. december 2021
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If you enjoy working in an innovative environment that combines fundamental science, applied science and commercialization, this posting is made right for you. At DTU Fotonik you will be the key element for designing and fabricating advanced metasurfaces used for a novel detection method of weak electromagnetic fields at infrared and terahertz (THz) frequencies. Due to our collaboration with Hamamatsu Photonics in Japan, there is a strong focus on real-world use cases.

We are looking for a dedicated postdoc candidate with an interest in metasurfaces as well as infrared and THz light detection. As a successful candidate, you will be working with an international team both at DTU Fotonik and our collaborators at Hamamatsu Photonics in Japan. You will enter an ongoing project where we develop a novel class of infrared light detectors based on metamaterials and vacuum electronics, which in conjunction form photomultiplier tubes sensitive to the entire infrared spectrum. A special focus in this project will be put on the detection of the far-infrared frequency part, namely the THz frequencies.

The purpose of this post-doc project is to develop and fabricate our next generations of metasurfaces using electromagnetic theory, numerical simulations and precise cleanroom work. Examples of metasurface design elements include e.g. superlattices, 2D materials and ingenious use of surface plasmon polaritons with graphene. In the fabrication part of the project, you will utilize a broad range of methods ranging from e-beam lithography, physical etching, thermal processing to chemical modifications. Each metasurface will be analysed and tested in our THz-laboratories, allowing for fast feedback and optimisation.

The candidate selected for this position will drive his or her own research independently, but in collaboration with an extensive team of more than 20 researchers and engineers. The candidate must therefore show a good balance between independence, curiosity, and service to the project team. Therefore, the position requires a strong will to complete tasks in an efficient, detailed, and collaborative manner.  

Responsibilities and qualifications
In this project, you will be responsible for designing new metasurfaces that interact strongly with infrared and THz light. The interaction should enable electron emission from the metasurfaces via ultrafast field electron emission. The design process will primarily be conducted using finite-element computer simulations. You will also be responsible for the cleanroom manufacturing of the metasurfaces. This includes the use of existing as well as development of new fabrication methods. You will be working in the National Danish cleanroom facility, which is a shared facility amongst university personnel and a list of private companies. Your work will be conducted in close collaboration with the rest of our team. Most importantly, you will work together with another post-doc who is responsible for the optical characterization of and feedback to your metasurfaces.

It is an advantage if you have some of the following specific qualifications:

  • Cleanroom fabrication
  • Finite-element computer simulations
  • Metamaterials
  • Strong-field light-matter interactions

It is also an advantage if you possess some or all of the following general qualifications:

  • You have a strong capacity for problem solving
  • You enjoy an international environment
  • You enjoy travelling
  • You can complete tasks on time
  • You are well formulated in English, and can write scientific reports and manuscripts for publication at a high level
  • You have a desire to advance both professionally and personally

As a formal qualification, you must hold a PhD degree (or equivalent).

We offer
DTU is a leading technical university globally recognized for the excellence of its research, education, innovation and scientific advice. We offer a rewarding and intellectually challenging job in an international environment. We strive for academic excellence in an environment characterized by collegial respect and academic freedom tempered by responsibility.

Salary and terms of employment
The appointment will be based on the collective agreement with the Danish Confederation of Professional Associations. The allowance will be agreed upon with the relevant union.

The period of employment starts as soon as possible and ends on 31 December 2023. The position is full time.

You can read more about career paths at DTU here.

Further information
Further information may be obtained from Postdoc Simon Lehnskov Lange,

You can read more about the DTU Fotonik at

If you are applying from abroad, you may find useful information on working in Denmark and at DTU at DTU – Moving to Denmark.

Application procedure
Your complete online application must be submitted no later than 12 December 2021 (Danish time). Applications must be submitted as one PDF file containing all materials to be given consideration. To apply, please open the link "Apply online", fill out the online application form, and attach all your materials in English in one PDF file. The file must include:

  • Application (motivated and specific cover letter)
  • CV
  • Academic Diplomas (MSc/PhD)
  • List of publications

Applications received after the deadline will not be considered.

All interested candidates irrespective of age, gender, disability, race, religion or ethnic background are encouraged to apply.

At DTU Fotonik we aim to offer education, research and innovation of the highest standard, and our focus on application-oriented research enables us to work across many engineering disciplines and research areas, such as IT and the medical and health sciences. We have a close collaboration with researchers from all over the world, just as we collaborate with industry and public authorities about the dissemination of solutions based on photonics engineering as their key enabling technology. Our laboratories are world-class, and internationally we are at the top.

The atmosphere in the Department is informal, and our physical surroundings ensure that students and researchers can work in close proximity. This promotes knowledge sharing and an exchange of ideas that may spark new research and more start-up companies. We work closely together with our students, regardless of their passion being basic or applied research, as new breakthroughs in both discoveries and applications are needed.

Technology for people
DTU develops technology for people. With our international elite research and study programmes, we are helping to create a better world and to solve the global challenges formulated in the UN’s 17 Sustainable Development Goals. Hans Christian Ørsted founded DTU in 1829 with a clear vision to develop and create value using science and engineering to benefit society. That vision lives on today. DTU has 12,900 students and 6,000 employees. We work in an international atmosphere and have an inclusive, evolving, and informal working environment. DTU has campuses in all parts of Denmark and in Greenland, and we collaborate with the best universities around the world.