Zobrazeno 1 - 10
of 78
pro vyhledávání: '"D. Lezal"'
Publikováno v:
Journal of Non-Crystalline Solids. 354:486-491
Chalcogenide bulk glasses Ge20Se80−xTex for x ∈ (0, 10) have been prepared by systematic replacement of Se by Te. Selected glasses have been doped with Er and Pr, and all systems have been characterized by transmission spectroscopy, measurements
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f564135d8addf21ae7fc7bf769f88dc
https://doi.org/10.1016/j.jnoncrysol.2007.07.084
https://doi.org/10.1016/j.jnoncrysol.2007.07.084
Autor:
Valmor Roberto Mastelaro, M. Tabackniks, Sandra Helena Messaddeq, D. Lezal, Younes Messaddeq, Aline Y. Ramos, M. Siu Li
Publikováno v:
Applied Surface Science. 205:143-150
Irreversible photoexpansion and photobleaching effect has been observed in amorphous Ga10Ge25S65 glass when its surface was exposed to light with energy greater than the band gap, 3.52 eV. The magnitude of the expansion of GaGeS glasses depends on th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::decd45bb70b7cd4eca8fc602939be6d7
https://doi.org/10.1016/s0169-4332(02)01013-9
https://doi.org/10.1016/s0169-4332(02)01013-9
Autor:
Valmor Roberto Mastelaro, Younes Messaddeq, Sandra Helena Messaddeq, Sidney José Lima Ribeiro, D. Lezal, Aline Y. Ramos, M. Siu Li
Publikováno v:
Journal of Non-Crystalline Solids. 304:160-166
Irreversible photoexpansion effect has been observed in amorphous Ga10Ge25S65 glasses when its surface was exposed to light with energy greater than the band gap, 3.52 eV. A volume change of about 5% was reached in bulk samples by controlling illumin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::75234812b5d2102673d48a030006369f
https://doi.org/10.1016/s0022-3093(02)01013-x
https://doi.org/10.1016/s0022-3093(02)01013-x
Publikováno v:
Journal of Non-Crystalline Solids. 284:282-287
Photoexpansion and photobleaching effects have been examined in glass compositions Ga10Ge25S65 and Ga5Ge25As5S65. Such compositions are promising for optical storage and planar waveguide applications. To evaluate the photoinduced effect, samples were
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13ee81e574c24536a83326037e8b01ac
https://doi.org/10.1016/s0022-3093(01)00415-x
https://doi.org/10.1016/s0022-3093(01)00415-x
Publikováno v:
Journal of Non-Crystalline Solids. :526-531
Glasses in the GeGaS system are promising hosts for Pr 3+ -ions and are thus interesting matrices for a planar optical amplifier at wavelength 1.3 μm. For such an application a technique to induce patterned changes in the index of refraction for gen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b663224d02240482e7ee58f93b552259
https://doi.org/10.1016/s0022-3093(98)00427-x
https://doi.org/10.1016/s0022-3093(98)00427-x
Relief Bragg gratings were recorded on the surface of Ga–Ge–S glass samples by interference of two UV laser beams at 351 nm. Scanning force microscopy was used to perform a 3D image analysis of the resulting surface topography, which shows the su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::933ba7f57a27e74105a13a7aa30ec557
Publikováno v:
Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
Made available in DSpace on 2022-04-29T08:46:58Z (GMT). No. of bitstreams: 0 Previous issue date: 2001-01-01 We report on a metastable light-induced volume expansion in Ge25+xGa10-xS65 glasses under irradiation with band gap (UV) light, which can res
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f773d6386fb44639fb74c55a918a1ea
https://doi.org/10.1103/physrevb.63.224203
https://doi.org/10.1103/physrevb.63.224203
Publikováno v:
Journal of Materials Science. 16:422-428
Glasses in the V2O5-PbO-GeO2 system containing 55 mol% V2O5 were found to undergo a droplet-type phase separation. The dispersed phase is rich in GeO2. The volume percent of this phase increases with increasing GeO2/PbO ratio in the glass. When the v
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de82c72d00ab6a30446e1bb717fce17d
https://doi.org/10.1007/bf00738632
https://doi.org/10.1007/bf00738632
Publikováno v:
Journal of Physics C: Solid State Physics. 9:L163-L165
The theory of thermal dielectric relaxation, developed by Gupta and van Overstraeten (see ibid., vol.7, p.3560 (1974)), has been verified experimentally, using the system Al-amorphous As2Se3-Al. The observed dependence of the temperature Tm, at which
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cbbfd220b5153eea091c4d2a4b86ea7e
https://doi.org/10.1088/0022-3719/9/6/007
https://doi.org/10.1088/0022-3719/9/6/007
Publisher Summary This chapter discusses some properties of evaporated and sprayed CdSe layers for heterojunction vidicon targets. Heterojunction layer systems have been used as targets for vidicon-type camera tubes have been widely studied. The most
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7e0e37ca5ea5c0f631148d4f53b7686
https://doi.org/10.1016/s0065-2539(08)61483-3
https://doi.org/10.1016/s0065-2539(08)61483-3