New hybrid nanocomposite based on (PVA-Ag-Coumarin) for high sensitive photodiode device

Autor: Ahmed Gamal El-Shamy, M.G. El-Shaarawy, F. El-Tantawy, T.Y. Elrasasi, N.M. Shash, M.A. Attallah

Publikováno v: Materials Science in Semiconductor Processing. 126:105653

A Schottky device with structure (Ag/PVA-Ag-Coumarin/n-Si) has been fabricated for optical photodiode applications. It has been fabricated via a spin coating technique after preparing PVA-Ag nano-composite using the in-situ technique and then adding

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f1b7885ba1aa05f3312750b8e46c8f86
https://doi.org/10.1016/j.mssp.2020.105653

Direct torque control of machine side multilevel converter for variable speed wind turbines

Autor: Ahmed M. Atallah, El Sayed F. El Tantawy

Publikováno v: Energy. 90:1091-1099

Nowadays, wind turbine capacities are increasing rapidly. New capacities of 5 MW wind turbines now exist and yet are still increasing continuously, especially for offshore wind turbines. Generation voltage has been increased to comply with the new po

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::13f99223bcb6a292466b12d4d95a3525
https://doi.org/10.1016/j.energy.2015.06.065

Synthesis, electrical properties and transport mechanisms of thermally vacuum evaporated CdTe nanocrystalline thin films

Autor: F. El-Tantawy, A.T. Nagat, Ahmed A. Al-Ghamdi, M.S. Abd El-sadek

Publikováno v: Solid State Communications. 152:1644-1649

A stoichiometry CdTe nano-structured powder was synthesized by chemical process. Thin films of different thicknesses (40, 60, and 100 nm) of CdTe were prepared by thermal evaporation method onto silicon substrates. Current-voltage (I-V) and capacitan

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2c8840e100271347d8c8856ff992a258
https://doi.org/10.1016/j.ssc.2012.05.029

Spectroscopic and Quantum Mechanical Studies of Substituted Anilines and their Charge-Transfer Complexes with Iodine in Different Solvents

Autor: Tarek M. El-Gogary, Shreen F. El-Tantawy, Mostafa A. Diab

Publikováno v: Monatshefte für Chemie - Chemical Monthly. 137:1027-1042

Equilibrium constants and molar extinction coefficients for 1:1 charge-transfer complexes between 2-hydroxyaniline (HA), 5-chloro-2-hydroxyaniline (CHA), and 4-bromo-2,6-dimethylaniline (BMA) as donors and iodine, as a typical σ-acceptor were determ

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b4ebef536a77b0e7325bf024dafd8f9d
https://doi.org/10.1007/s00706-006-0511-3

Influence of vanadium oxide on BSCCO (2223) phase formation and related properties

Autor: F. El-Tantawy, Gian Carlo Celotti, F. Monteverde, S. A. Mansour, Anna Tampieri

Publikováno v: Journal of materials science 33 (1998): 1857–1862. doi:10.1023/A:1004305421744
info:cnr-pdr/source/autori:A. TAMPIERI*, G. CELOTTI*, F. MONTEVERDE* F. EL-TANTAWY**, S. A. MANSOUR**/titolo:Influence of vanadium oxide on BSCCO (2223) phase formation and related properties/doi:10.1023%2FA:1004305421744/rivista:Journal of materials science/anno:1998/pagina_da:1857/pagina_a:1862/intervallo_pagine:1857–1862/volume:33

The preparation of BSCCO 2 2 2 3 superconducting powder was studied with addition of V2O5 ranging from 0.3 to 0.5 molar index. Various compositions were prepared both containing and without Pb and subsequently treated with different firing cycles, to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20a8d2e13c3b8a6e429317eddf9a2733
http://www.cnr.it/prodotto/i/251923