Výsledky vyhledávání - "Amal Elgawadi"

Modification of the anomalous V-shaped and S-shaped temperature dependent photon energy in Al x Ga 1-x N (0

Autor: Jerzy S. Krasinski, Amal Elgawadi, Gordon Gainer, Vladimir Dmitriev

Publikováno v: SPIE Proceedings.

We have modified the anomalous peak energy of the temperature dependent photoluminescence (PL) of Al x Ga 1-x N/GaN nanoheterostructures (0

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b10fef14dd71ab8b6c4a7176db89b8f7
https://doi.org/10.1117/12.764552

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Comparative study of HVPE- and MOCVD-grown nitride structures for UV lasing application

Autor: G. H. Park, Amal Elgawadi, Jin-Joo Song, Jerzy S. Krasinski, J. B. Lam, Vladimir Dmitriev, D. Tsvetkov, Gordon Gainer, S. Bidnyk

Publikováno v: MRS Proceedings. 639

We studied and compared the emission properties of optically excited (Al)GaN structures grown by two different techniques: hydride vapor phase epitaxy (HVPE) and metalorganic chemical vapor deposition (MOCVD). We successfully achieved stimulated emis

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b2bfad7d8a0e64ae4d4b8e6e3540a56d
https://doi.org/10.1557/proc-639-g6.4

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The convergence of longitudinal excitons onto the Γ5transverse exciton in GaN and the thermal activation energy of longitudinal excitons

Autor: Jerzy S. Krasinski, Amal Elgawadi, Gordon Gainer

Publikováno v: Journal of Physics: Condensed Matter. 25:335803

The crystal orientation dependence of GaN excitons was investigated via the photoluminescence (PL) technique. The PL emissions at a temperature of 10 K were obtained from two experimental configurations where the emission K vector (the propagation ve

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e1549a35daa4263df547f11c4eb6bd57
https://doi.org/10.1088/0953-8984/25/33/335803

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Modification of the anomalous optical transitions in multilayer AlGaN-based nanoheterostructure using a nonbonding laser lift-off technique

Autor: Jerzy S. Krasinski, Amal Elgawadi, Vladimir Dmitriev, Alexander Usikov, Gordon Gainer

Publikováno v: Journal of Applied Physics. 103:123512

We present a study of the effect of the strain on the anomalous temperature dependence of the photoluminescence (PL) transition energy of three-nanolayer AlxGa1−xN nanoheterostructur∕GaN (0

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2fb2f6d2b536b53b9cdd9db9d990af95
https://doi.org/10.1063/1.2936985

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Strain at the surface of GaN epilayers and at GaN/sapphire interface before and after laser lift-off (LLO) from the sapphire substrate

Autor: Jerzy S. Krasinski, Amal Elgawadi

Publikováno v: Journal of Applied Physics. 103:033519

Four GaN epilayers were grown on sapphire by hydride vapor phase epitaxy. The lattice and thermal expansion coefficient mismatches between the epilayers and the sapphire produce a strain in the structure. The strain at the surface of the epilayers wa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d20b3c4d60eb42004e80abcd27a84d3a
https://doi.org/10.1063/1.2836955

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Development of a trans-rectal optical tomography probe for concurrent sagittal imaging with trans-rectal ultrasound

Autor: Guan Xu, Zhen Jiang, Daqing Piao, Amal Elgawadi

Publikováno v: Scopus-Elsevier

A first-of-its-kind trans-rectal near-infrared optical tomography probe for non-invasive sagittal imaging of prostate has been developed. This trans-rectal NIR probe is designed to attach to a commercial biplane trans-rectal ultrasound for concurrent

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8238c5cc52e8555c59eaec332645da84
http://www.scopus.com/inward/record.url?eid=2-s2.0-69949090696&partnerID=MN8TOARS

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