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/Vacatures/Postdoctoral Researcher Phononic/acoustic resonators and filters

Postdoctoral Researcher Phononic/acoustic resonators and filters

Research & development - Leuven | More than two weeks ago

Model, design and characterize acoustic metamaterials, devices and functions using electrostatic and piezoelectric transductions combined with transistors in 2D and 3D configurations

Postdoctoral Researcher Phononic/acoustic resonators and filters

What you will do

Background and motivation
In recent years the research field called phononics has become a field of interest for many technologies. The range of applications in which the field of phononics is having an impact ranges from ultrasound to thermal devices. A periodic array of holes in a membrane or substrate will give rise to a stopband for acoustic waves in a certain frequency range, hence the periodic array of holes acts as a phononic crystal. Such phononic crystals have for example been used for the design of unreleased acoustic resonators for timing and sensing applications in the microwave spectrum. Hereto, the period of the array of holes is typically around 1~10µm. For devices with RF and thermal applications in mind, phononic crystals are designed with stopbands at larger frequencies, hence the period of the array of holes is typically chosen to be sub-micrometer to 1µm scale. [Hopkins, 2011]
Current research in the field of phononics goes beyond the study of phononic crystals for the use of resonators or reflectors. Similarly, to the field of photonics the study of phononics is about the control and manipulation of the propagation of acoustic waves. This includes the study of phononic metamaterials for cloaking application or for the design of perfect absorbers. There is also active research towards mimicking typical electronic functionalities, for example the design of phononic diodes and phononic transistors to achieve phononic logic functionality.


Context and description of the work
Imec explores the possibilities for deep integration of phononic devices in advanced technology nodes. To support this activity, we offer a post-doc position to model, design and characterize acoustic metamaterials, devices and functions using electrostatic and piezoelectric transductions combined with transistors in 2D and 3D configurations. These passive, active and/or tunable devices will be produced in the state-of-the-art infrastructure of imec, using complex material stacks as designed by the post-doc and using advanced lithography to structure materials vastly below the targeted acoustic wavelengths.


VUB: Piet Wambacq
imec: Xavier Rottenberg

What we do for you

We offer you the opportunity to join one of the world’s premier research centers in nanotechnology at its headquarters in Leuven, Belgium. With your talent, passion and expertise, you’ll become part of a team that makes the impossible possible. Together, we shape the technology that will determine the society of tomorrow. 
We are proud of our open, multicultural, and informal working environment with ample possibilities to take initiative and show responsibility. We commit to supporting and guiding you in this process; not only with words but also with tangible actions. Through, 'our corporate university', we actively invest in your development to further your technical and personal growth. 
We are aware that your valuable contribution makes imec a top player in its field. Your energy and commitment are therefore appreciated by means of a competitive salary with many fringe benefits.

Who you are

  • You have a Ph.D in Science or Engineering; 
  • You are highly motivated and enthusiastic about the research topic;
  • You take initiative and work independently, while being part of a team;
  • You are able to schedule your work according to project deadlines and deliverables;
  • You have excellent written and oral communication skills in English with an outstanding track record of journal publications and presentations at international conferences;
As a postdoc researcher you will receive training, coaching and networking opportunities to become a recognized international expert in the field. 


This postdoctoral position is funded by imec through KU Leuven. Because of the specific financing statute which targets international mobility for postdocs, only candidates who did not stay or work/study in Belgium for more than 24 months in the past 3 years can be considered for the position (short stays such as holiday, participation in conferences, etc. are not taken into account).

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