Browsing Journal Articles, Multidisciplinary Digital Publishing Institute (MDPI) by Author "Kandas, Ishac"
Now showing items 1-6 of 6
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A Comprehensive Study on EDFA Characteristics: Temperature Impact
Bebawi, John A.; Kandas, Ishac; El-Osairy, Mohamed A.; Aly, Moustafa H. (MDPI, 2018-09-13)In this paper, a comprehensive study on erbium-doped fiber amplifier (EDFA) characteristics under temperature variation has been performed. The rate and propagation equations that characterize EDFA performance pumped at ... -
Efficiency Enhancement of Perovskite Solar Cells with Plasmonic Nanoparticles: A Simulation Study
Hajjiah, Ali; Kandas, Ishac; Shehata, Nader (MDPI, 2018-09-05)Recently, hybrid organic-inorganic perovskites have been extensively studied due to their promising optical properties with relatively low-cost and simple processing. However, the perovskite solar cells have some low optical ... -
Nano-Enriched and Autonomous Sensing Framework for Dissolved Oxygen
Shehata, Nader; Azab, Mohammed; Kandas, Ishac; Meehan, Kathleen (MDPI, 2015-08-14)This paper investigates a nano-enhanced wireless sensing framework for dissolved oxygen (DO). The system integrates a nanosensor that employs cerium oxide (ceria) nanoparticles to monitor the concentration of DO in aqueous ... -
Piezoelastic PVDF/TPU Nanofibrous Composite Membrane: Fabrication and Characterization
Elnabawy, Eman; Hassanain, Ahmed H.; Shehata, Nader; Popelka, Anton; Nair, Remya; Yousef, Saifallah; Kandas, Ishac (MDPI, 2019-10-10)Poly (vinylidene fluoride) nanofibers (PVDF NFs) have been extensively used in energy harvesting applications due to their promising piezoresponse characteristics. However, the mechanical properties of the generated fibers ... -
Piezoresponse, Mechanical, and Electrical Characteristics of Synthetic Spider Silk Nanofibers
Shehata, Nader; Kandas, Ishac; Hassounah, Ibrahim; Sobolčiak, Patrik; Krupa, Igor; Mrlik, Miroslav; Popelka, Anton; Steadman, Jesse; Lewis, Randolph (MDPI, 2018-08-01)This work presents electrospun nanofibers from synthetic spider silk protein, and their application as both a mechanical vibration and humidity sensor. Spider silk solution was synthesized from minor ampullate silk protein ... -
Plasmonic-Ceria Nanoparticles as Fluorescence Intensity and Lifetime Quenching Optical Sensor
Shehata, Nader; Samir, Effat; Kandas, Ishac (MDPI, 2018-08-27)Ceria nanoparticles have been recently used as an optical fluorescent material with visible emission under ultraviolet excitation, due to the formation of trivalent cerium ions with corresponding oxygen vacancies. This ...