DESY is one of the world’s leading research centres for photon science, particle and astroparticle physics as well as accelerator physics. More than 2400 employees work at our two locations Hamburg and Zeuthen in science, technology and administration. We offer an open, inclusive, and international environment with first-class facilities. We are located on a vibrant research campus together with the University of Hamburg Centre for Ultrafast lmaging.

Deutsches Elektronen-Synchrotron DESY

A Research Centre of the Helmholtz Association

For our location in Hamburg we are seeking:

Postdoc - Optical control of particles for serial crystallography

The Coherent lmaging group at the Center for Free-Electron Laser Science, DESY, is developing methods to utilise revolutionary new sources such as X-ray free-electron lasers (XFELs) for obtaining structures of macromolecules at atomic resolution, at room temperature, to explore their dynamics and function. The group has the expertise in the development of sophisticated instrumentation and analysis methods for serial crystallography. lt develops sample delivery and characterisation techniques for biological materials, and new forms of microscopy, holography, and ptychography for the imaging of molecules to cells. The group extensively collaborates with leading structural biology groups throughout the world. One of our goals is to develop opto- fluidic approaches for the precise control of the delivery of protein microcrystals in megahertz serial crystallography experiments at the European XFEL. In collaboration with the Technische Universität Hamburg- Harburg (TUHH), we aim to control the trajectories of particles in microchannels using optical trapping or acoustics, for example, to synchronise them to X-ray pulses.

The position

Develop principles and prototypes for opto-fluidic control of protein microcrystals in microfluidic systems Integrate diagnostics such as particle tracking into microfluidic systems

Create a compact system based on combining optical waveguides and fluid channels using laser-selective etching technology

Deploy operable sample delivery systems for experiments at the European XFEL


Ph.D. in physics, engineering or similar discipline

Background in optics, microfluidics, or velocimetry is preferred

Experience in fibre-based optical systems, instrument control, and machine vision preferred Self-motivated and work well in an interdisciplinary team environment

Very good communication skills in English Excellent interpersonal skills and a friendly nature

For further information please contact Dr. Saša Bajt, +49-40-8998-2082 ( This email address is being protected from spambots. You need JavaScript enabled to view it. ) or Prof. Dr. Henry Chapman, +49-40-8998-4155.

The position is limited to 2 years.

Salary and benefits are commensurate with those of public service organisations in Germany. Classification is based upon qualifications and assigned duties. Handicapped persons will be given preference to other equally qualified applicants. DESY operates flexible work schemes. DESY is an equal opportunity, affirmative action employer and encourages applications from women. Vacant positions at DESY are in general open to part-time- work. During each application procedure DESY will assess whether the post can be filled with part-time employees.

We are looking forward to your application via our application system:


Deutsches Elektronen-Synchrotron DESY

Human Resources Department | Code: FSPO002/2020 Notkestraße 85 | 22607 Hamburg Germany

Phone: +49 40 8998-3392


Deadline for applications: 2020/03/20