Poster (Scientific congresses and symposiums)
Characterization of Vacuum Deposited Thin Organic Layers by Phase Shifting Interferometry and FTIR Spectroscopy for Space Contamination Study
Henry, Théo; Fleury-Frenette, Karl
2018ECN 2018 European Conference on Nanofilms
 

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Keywords :
space contamination; remote FT-IR; organic thin films
Abstract :
[en] Although satellites and spacecrafts are exposed to very small amounts of organic contamination (typically 10-9 to 10-5 g.cm-2 cumulated over their lifetime) from the outgassing of some of their own structural components, fixation and photo-degradation of organic compounds can significantly alter the thermo-optical properties of critical surfaces involved in their passive thermal regulation. The study of surface molecular contamination under conditions representative of space environment is therefore of prime interest in order to define mitigation strategies. The Centre Spatial de Liège has recently initiated research work on this topic and first experimental results are presented here. Organic thin films have been deposited using vacuum thermal evaporation / sublimation and their topology and equivalent surface concentration have been characterized using phase shifting interferometry. Furthermore, FT-IR spectroscopy in reflection configuration have been tested in different conditions in order to monitor the IR signature of contaminated surface samples this in the perspective of implementing an in situ monitoring system on a deposition chamber with UV exposure capability.
Research center :
STAR - Space sciences, Technologies and Astrophysics Research - ULiège
CSL - Centre Spatial de Liège - ULiège
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Henry, Théo ;  Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Fleury-Frenette, Karl ;  Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Language :
English
Title :
Characterization of Vacuum Deposited Thin Organic Layers by Phase Shifting Interferometry and FTIR Spectroscopy for Space Contamination Study
Publication date :
22 March 2018
Event name :
ECN 2018 European Conference on Nanofilms
Event organizer :
Cranfiedl University - VINF
Event place :
Cranfield, United Kingdom
Event date :
from 20-03-2018 to 22-03-2018
Audience :
International
Available on ORBi :
since 28 March 2018

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