dc.contributor.author |
Kavetskyy T. |
|
dc.contributor.author |
Kolev K. |
|
dc.contributor.author |
Boev V. |
|
dc.contributor.author |
Petkov P. |
|
dc.contributor.author |
Petkova T. |
|
dc.contributor.author |
Stepanov A. |
|
dc.date.accessioned |
2018-09-18T20:27:42Z |
|
dc.date.available |
2018-09-18T20:27:42Z |
|
dc.date.issued |
2011 |
|
dc.identifier.issn |
1874-6500 |
|
dc.identifier.uri |
https://dspace.kpfu.ru/xmlui/handle/net/140127 |
|
dc.description.abstract |
Nanovoids in As2S3-based glasses (As 2S3, (As2S3)85Ag 15, and (As2S3)85(AgI) 15), a polymer and a As2S3-polymer nanocomposite were studied using the positron annihilation lifetime spectroscopy (PALS) technique. After computer treatment of the PALS data recorded, it was found that only two components τ 1 (short-lived) near 0.2 ns and τ 2 (long-lived) near 0.4 ns are resolved for the As 2S3-based glasses. At the same time, in the case of the polymer sample two components τ 2 near 0.3 ns and τ 3 (pick-off annihilation of ortho-positronium) near 2.8 ns were detected, while for the As2S3-polymer nanocomposite three components τ 1 near 0.2-0.3 ns, τ 2 near 0.4-0.5 ns and τ 3 near 2.4 ns were established. The volume of nanovoids in the materials studied was determined, and the fractional free volumes of the As2S3-polymer nanocomposite and the polymer matrix were compared. The results obtained are important to utilize As2S 3-based glasses and polymer nanocomposites for advanced sensor applications. © 2011 Springer Science+Business Media B.V. |
|
dc.relation.ispartofseries |
NATO Science for Peace and Security Series B: Physics and Biophysics |
|
dc.subject |
Chalcogenide glasses |
|
dc.subject |
Nanovoids |
|
dc.subject |
Polymers |
|
dc.subject |
Positron annihilation lifetime spectroscopy |
|
dc.title |
Nanovoids in glasses and polymers probed by positron annihilation lifetime spectroscopy |
|
dc.type |
Article |
|
dc.collection |
Публикации сотрудников КФУ |
|
dc.relation.startpage |
103 |
|
dc.source.id |
SCOPUS18746500-2011-SID79956105569 |
|