Applications are invited for one two-year postdoctoral fellowship at the Department of Physics and Astronomy, Aarhus University, Denmark. The position is available from 1 January 2023 or later.
Research area and project description
Nanoguitars under pressure
This project aims at answering the question: How accurately can one measure low gas pressure in a simple and absolute manner? To attempt to answer it, optomechanical pressure sensors, based on nanoguitars—consisting in highly tensioned strings sculpted on ultrathin dielectric drums—will be realized with the goal of performing absolute pressure measurements with sensitivities beyond the state-of-the-art by monitoring the pressure-induced modifications of the string vibrations (frequencies, damping) with a laser.
The project is based on very recent breakthroughs realized by the group regarding the design, fabrication and application of nanostructured silicon nitride thin films. It will involve the use of nanofabrication technologies (Electron beam lithography, atomic force microscopy, etc.) and optical techniques (e.g. interferometry) as well as the simulation of the optical and mechanical properties of nanostructures (using e.g. Finite element methods). It will involve collaboration with local groups at AU, as well as with a Canadian company, world leader in the fabrication of silicon nitride membranes.
In addition to providing a possible new metrological standard for the absolute determination of pressure, the proposed sensors will be applied to the determination of the saturation vapor pressure of environmentally relevant particles, for which the group has recently developed a dedicated instrument.
Qualifications and specific competences:
Applicants must hold a PhD in Physics, Nano-science, Engineering or similar, experience with optics and/or nanofabrication being a plus.
For more details regarding the application, see
Prior to applying applicants should contact:
Associate Professor Aurélien Dantan (email@example.com)
Please contact firstname.lastname@example.org