PhD scholarship in Live TEM imaging of Nanowire growth and device dynamics

DTU Nanotech
onsdag 30 maj 18

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Frist 31. juli 2018
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Explore live atomic scale imaging of the complex processes in III-V nanowire growth and device dynamics!

Nanowires are finding uses in optoelectronics and photovoltaics, and they are key materials in novel technologies such as quantum computing. The underlying growth processes to create the structures from silicon or III-V materials is a complex interplay of many nanoscale processes.

This project builds on our previous experience with silicon nanowire growth on microcantilevers inside a transmission electron microscope (TEM) to directly view and explore the growth processes as they take place. Now we will be using the recently installed and unique in situ TEM system combining Metalorganic Vapour Phase Epitaxy (MOVPE) of III-V materials with high-resolution TEM imaging in real time at Lund University.

Aiming to create a better foundation for nanowire III-V optoelectronic devices, this PhD project will combine world-leading competences at Lund University, DTU Fotonik and DTU Nanotech in a push for unprecedented characterization, control and understanding of the complex III-V MOVPE growth processes.

You will develop, fabricate, and use microfabricated heater systems at DTU to study the processes of III-V nanowire growth with MOVPE-TEM, thereby creating nanowire devices while imaging the process in the TEM. Afterwards, you will do further optical and electrical characterization of the created devices at DTU.

For further inspiration, please refer to the following publications:

Responsibilities and tasks
Your research will include a combination of several skills and tasks:
  • Design, fabrication and test of microcantilever heater systems in the DTU Danchip cleanroom
  • In-situ TEM with MOVPE nanowire growth at Lund University in collaboration with the group of Kimberly Thelander
  • Nanowire characterization with optical and electrical methods at DTU and Lund
  • Modelling and analysis to understand the obtained results and how they can be used to develop new III-V device functionality

Ideally, you already have experience with some of the skills listed above.

Your PhD project will:
  • Cover several skills within fabrication, growth, TEM and characterization. The project will push beyond state-of-art techniques for in-situ TEM measurement capabilities, and as such, it will require a dedicated and curious analytical mindset.
  • Be situated within a collaboration bteween two universities, including frequent visits to work at Lund University. You will have an office space at both universities, and  you must be open to travelling and working with international colleagues.
  • Probe complex processes, where developing new understanding will build on your overview and ability to quickly build your competences in new topics and combine input from multiple collaborators.

Given the collaborative nature of the project, you must have good oral and written communication skills in English, the capability to work independently and the ability to design experimental investigations.
Candidates should have a master's degree in engineering or a similar or equivalent academic degree.

Approval and Enrolment
The scholarship for the PhD degree is subject to academic approval, and the candidates will be enrolled in one of the general degree programmes of DTU. For information about the general requirements for enrolment and the general planning of the scholarship studies, please see the DTU PhD Guide.

The assessment of the applicants will be made by

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 an academic freedom tempered by responsibility.

Salary and appointment terms
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 3 years.

This project is a collaboration between DTU and Lund University with three participating departments. The place of employment will be at DTU Nanotech, however you will be expected to travel frequently to Lund University.
You can read more about career paths at DTU here.

Further information
Further information may be obtained from Kristian Mølhave, tel.: +45 25126672,

You can read more about DTU Nanotech at

Please submit your online application no later than 31 July 2018 (Local 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 in the online application form, and attach all your materials in English in one PDF file.

The file must include:
  • A letter motivating the application (cover letter)
  • Curriculum vitae
  • Grade transcripts and BSc/MSc diploma
  • Excel sheet with translation of grades to the Danish grading system (see guidelines and Excel spreadsheet here)

Candidates may apply prior to obtaining their master's degree but cannot begin before having received it.

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

DTU Nanotech - the Department of Micro- and Nanotechnology - is situated in the northern part of Copenhagen. DTU Nanotech is a centre of excellence in micro- and nanotechnology utilising sciences across the traditional boundaries of technology, thereby enabling innovative solutions for the benefit of society. DTU Nanotech has approximately 260 staff members. With 40 % international employees, the department constitutes an international environment.

DTU is a technical university providing internationally leading research, education, innovation and scientific advice. Our staff of 6,000 advance science and technology to create innovative solutions that meet the demands of society, and our 11,200 students are being educated to address the technological challenges of the future. DTU is an independent academic university collaborating globally with business, industry, government and public agencies.