Postdoc in Grazing Incidence X-ray Ptychographic Microscopy

Wednesday 13 Jan 21

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If you are establishing your career as scientist and wish to contribute to the creation of novel techniques for studying nano-scale structures at surfaces and interfaces, this is the position for you. We need a candidate who enjoys experimentation and scientific computing as much as we do, and who is excited about the opportunity to work with methods never tried before on real materials systems.

At DTU Energy you will break new ground at the absolute forefront of what is possible with state-of-the-art X-ray sources at international large scale facilities. The successful postdoc will be part of the section for Imaging and Structural Analysis section at DTU Energy in an international, inspiring and dynamic research environment.

Responsibilities and qualifications
The overall focus for the position is to develop a technique that achieves much faster coverage of large fields of view of nanostructures on surfaces by allowing the relaxation of spatial resolution in one or two dimensions, while providing nanoscale resolution in the other. This will open new areas of in situ experiments that could revolutionize materials science. If we succeed in this, we will study the live formation and transformation of nanoparticles and structures at elevated temperatures and in non-ambient atmosphere. The methodology combines knowledge and techniques from Grazing Incidence Small Angle Scattering (GISAS) and coherent diffractive imaging and ptychography.

The primary tasks that you should aim to accomplish are:

  • Simulate disordered dispersions of nanoparticles on a surface and corresponding data, attempt reconstruction, and evaluate whether meaningful properties can be extracted from the reconstructions.
  • From simulations (A) and simulations of other structures, determine the effect and applicability of different data acquisition modes for extracting more spatial detail.
  • Explore the possibility of applying limited projection angle reconstruction methods to determine the optimal experimental acquisition schemes that delivers useful data.
  • Design and perform an in situ experiment that demonstrates the applicability to real problems in materials science.

The core skills for the project are:

  • Experience with advanced methods in X-ray scattering or imaging, preferably phase contrast techniques
  • Experience with scientific computing and programming
  • Excellent communication skills in English (both written and verbal)
  • Ability to work independently and take responsibility for progress and quality of projects
  • Ability to work in a team environment

Moreover, the successful candidate is:

  • Highly motivated and enthusiastic about the research topic
  • Able to work in an organized fashion, document and disseminate scientific results in peer-reviewed publications
  • Able to work with diverse colleagues working on theory and experiments

Candidates must hold a PhD degree in experimental physics, chemistry, materials science (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 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 is 2 years.

You can read more about career paths at DTU here.

Further information
Further information may be obtained from Professor Jens Wenzel Andreasen,, +45 21 32 63 01

Please do not send applications to this e-mail address, instead apply online as described below.

You can read more about DTU Energy 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 7 February 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 (cover letter)
  • CV
  • Academic Diplomas (MSc/PhD)
  • List of publications
  • At least one reference with contact details

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

DTU Energy
The Department of Energy Conversion and Storage is focusing on functional materials and their application in sustainable energy technology. Our research areas include fuel cells, electrolysis, polymer solar cells, magnetic refrigeration, superconductivity, thermoelectrics, sustainable synthetic fuels, and batteries. The Department, which has more than 200 employees, was founded in 2012.

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 12,000 students and 6,000 employees. We work in an international atmosphere and have an inclusive, evolving, and informal working environment. Our main campus is in Kgs. Lyngby north of Copenhagen and we have campuses in Roskilde and Ballerup and in Sisimiut in Greenland.