@article{7b6be8d71f8f4c389a15befb4eafa7c8,
title = "Optically trapped delayed elasticity in germanium selenide glass fibers",
abstract = "Chalcogenide glasses undergo viscosity decrease under light irradiation (“photofluidity”). This effect has been known and investigated for many years now. Nevertheless, what is less well known, is that light irradiation impacts the whole viscoelastic behavior, and especially the delayed elasticity (or “anelasticity”). We investigate here the impact of light irradiation on delayed elastic recovery and compare it to the effect of temperature jumps. We show that photoinduced processes behind the photofluidity superimpose over the “natural” thermally activated processes. They produce their own contribution to the delayed elastic deformation without disturbing, or being disturbed, by the thermally activated processes. This contribution can be trapped by stopping the irradiation. Additionally, this trapping opens new routes to investigate photofluidity, by separating the photoinduced from the thermally activated processes. According to the experimental results, we also specify here the modified equations of linear viscoelasticity giving the evolution of the deformation during cycles of light irradiation.",
keywords = "chalcogenide glasses, delayed elasticity, photoinduced fluidity, recovery, viscoelasticity",
author = "Yann Gueguen and Asma Dergal and Khadidja Rahmoun and Vincent Keryvin and Bruno Bureau and Pierre Lucas and Sangleboeuf, {Jean Christophe}",
note = "Funding Information: Centre National de la Recherche Scientifique, Grant/Award Number: 118254; National Science Foundation, Grant/Award Number: 1640860 Funding Information: The authors would like to acknowledge Mariette Nivard, Herv? Orain, and ?ric Collet (IPR umr cnrs 6251) for the development of experimental setups, and Fabrice C?lari? (IPR umr cnrs 6251) for the idea of the experimental tests in oven. The authors would also like to thank the CNRS for supporting our international collaboration via the program PICS PhotoGlass (PICS 118254). P. L. acknowledges funding from the National Science Foundation (NSF Grant#-1640860). Y.G. acknowledges Peter Schall (Van der Waals-Zeeman Institute, University of Amsterdam, the Netherlands) for helpful literature and discussion. Funding Information: The authors would like to acknowledge Mariette Nivard, Herv{\'e} Orain, and {\'E}ric Collet (IPR UMR CNRS 6251) for the development of experimental setups, and Fabrice C{\'e}lari{\'e} (IPR UMR CNRS 6251) for the idea of the experimental tests in oven. The authors would also like to thank the CNRS for supporting our international collaboration via the program PICS PhotoGlass (PICS 118254). P. L. acknowledges funding from the National Science Foundation (NSF Grant#‐1640860). Y.G. acknowledges Peter Schall (Van der Waals‐Zeeman Institute, University of Amsterdam, the Netherlands) for helpful literature and discussion. Publisher Copyright: {\textcopyright} 2018 The American Ceramic Society and Wiley Periodicals, Inc",
year = "2019",
month = apr,
doi = "10.1111/ijag.12977",
language = "English (US)",
volume = "10",
pages = "235--247",
journal = "International Journal of Applied Glass Science",
issn = "2041-1286",
publisher = "John Wiley and Sons Ltd",
number = "2",
}