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Project:	A9

Title:          Optical setup for measuring thickness of liquid sheets

DESY group:     FS-CFEL-1 (Coherent Imaging Group)

Type:           On-site project

Duration:       19th july - 10th sep 2021

Description: 
Many powerful tools for studying biological systems, such as soft x-ray spectroscopy and single particle imaging, often require extremely thin samples due to strong absorption or background. This has been especially difficult for biological samples in liquid, as it is a challenge to have thin and free standing liquid films. We develop high-resolution 3D printed devices that generate sub-micrometer thin liquid sheets and we aim to eliminate their largest disadvantage – the sample consumption.
This summer project is aimed at building an optical imaging setup with a goal to measure the thickness of the liquid sheets based on thin film interference effects. Light ray reflected from the surface of the film can interfere constructively (bright) or destructively (dark) with a ray reflected from the back of the film based on the film thickness. Additional thickness information can be inferred from the color when using white light. Furthermore, the work would involve 3D printing of the devices, collecting the data, and analyzing the pictures in python.


Special Qualifications expected:
optics, python (preferably)


Link to further information:
https://desycloud.desy.de/index.php/s/dXAMg2Qcf8Zi2wi

Cancellation Policy:
If the student cannot come to DESY due to the COVID situation, the project will get canceled.
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