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Project:	A4

Title:          Studying the influence of various solvents on the surface structure and roughness of thin CNF layers

DESY group:     FS-PETRA-D (PETRA Diffraction and Scattering)

Type:           On-site project

Duration:       19.7.-30.8.21 (6 weeks)

Description: 
Cellulose is a sustainable material with many beneficial properties which make it a suitable candidate as carrier material in multilayered systems. Part of our work is to functionalize thin films of cellulose nanofibrils (CNF) with various materials dispersed in different solvents via spray deposition. Therefore, it is necessary to study the influence of these solvents on the surface structure and roughness of the CNF layers. 
In the first step of this project, multiple CNF layers of different thicknesses shall be prepared using spray deposition. The best spray parameters for various solvents shall be investigated. In the second step, the fabricated CNF layers shall be sprayed with the solvents and possible changes in the structure and roughness of the CNF layers shall be analyzed using AFM. Finally, the most promising samples shall be prepared ex situ to analyze their surface structure with GISAXS.

Special Qualifications expected:
BSc in physics or chemistry or nanoscience, used to handling chemicals; basic knowledge of atomic force microscopy and Xray scattering techniques

Link to further information:
desy.de/~sroth 

Cancellation Policy:
As the project requires hands-on activities, it can only be done on-site and will therefore be canceled, if on-site participation won't be possible.
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