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Stretchable scintillator composites for indirect X-ray detectors

Author:
J. Oliveira  V. Correia  P. Costa  A. Francesko  G. Rocha  S. Lanceros-Mendez  


Journal:
Composites Part B: Engineering


Issue Date:
2018


Abstract(summary):

Abstract Flexible and stretchable materials are increasingly being investigated for future technological platforms, polymer based materials being the most suitable candidates for those emerging technologies. This work reports on polymer based scintillator composites based on the thermoplastic elastomer Styrene-Ethylene/Butadiene-Styrene (SEBS) and Gd 2 O 3 :Eu 3+ scintillator nanoparticles, to form a polymer-based flexible and stretchable material for X-ray indirect detectors. Further, visible light yield under X-ray irradiation was improved by the inclusion of 2,5 dipheniloxazol (PPO) and (1,4-bis (2-(5-phenioxazolil))-benzol (POPOP) within the polymer matrix. Together with high levels of stretchability, with deformations up to 100%, the films exhibit suitable performance with low mechanical hysteresis (less than 1.5 MJ/m 3 for cycles up to 100% of strain) and reproducibly such as a scintillator material for the conversion of X-ray radiation into visible radiation. The decrease of just ∼13% of the X-ray radiation into visible light upon stretching up to 100% is attributed to a reduction of the effective filler concentration and proves the suitability of the developed materials for large area and stretchable X-ray radiation detectors. Graphical abstract Image 1 Highlights • Polymer-based scintillator materials have been developed based on Gd 2 O 3 :Eu 3+ nanoparticles. • The films exhibit high levels of stretchability with suitable performance. • The composites can be used for the fabrication of large area stretchable X-ray detectors.


Page:
226-226


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