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Highly Efficient Solar Energy Conversion Using Graded-index Metamaterial Nanostructured Waveguide

El-Khozondar, Hala J.; El-Khozondar, Rifa J.; Shama, Abhishek; Ahmed, Kawsar; Dhasarathan, Vigneswaran (2020)

In this paper, a graded-index metamaterial (GIM) nanostructured waveguide is proposed to enhance the performance of solar cells via a tunable absorption spectrum. The proposed four-layer nanostructured waveguide consists ...

Design of one dimensional refractive index sensor using ternary photonic crystal waveguide for plasma blood samples applications

El-Khozondar, Hala J.; Mahalakshmi, Perumal; El-Khozondar, Rifa J.; Ramanujam, Nambi R; Amiri, I. S.; Yupapin, P. (Elsevier BV, 2019-07)

One dimensional ternary photonic crystal based refractive index sensor is numerically proposed for the blood plasma sensing applications. It is achieved by introducing the defects or cavity cell, where the blood samples ...

Solar Energy Powered Toilet for Emergency or Remote Areas Usage: Maker Movement innovation

El-Khozondar, Rifa J.; El-Khozondar, Hala J.; Pfeifer, Christoph; Al Afifi, Rafat (Institute of Electrical and Electronics Engineers (IEEE), 2019-03)

In a time of catastrophes like war or earthquake, people forced to leave their houses and live in tents or remote areas. In both cases, utilities such as electricity, hot water, and probably toilet need to be provided ...

Transfer matrix method application on semiconductor-based solar cell characteristics measurements

Shabat, Mohammed M.; El-Khozondar, Hala J.; Alshembari, Ahmed N; El-Khozondar, Rifa J. (World Scientific Pub Co Pte Lt, 2018-10-10)

In this work, numerical calculations and simulation based on Transfer Matrix Method have been presented to investigate a model solar cell structure. New four-layered structure containing different types of semiconductor ...

Solar cell with multilayer structure based on nanoparticles composite

El-Khozondar, Hala J.; El-Khozondar, Rifa J.; Shabat, Mohammed M.; Schaadt, Daniel M (Urban & Fischer, 2018)

In this study, a four-layer waveguide structure has been investigated as a solar cell model. In the proposed structure, a nanoparticle composite layer is added to enhance the efficiency of the solar cell due to their ability ...

Dispersion Characteristics and Sensitivity Properties of Graphene Surface Plasmon Sensor

El-Khozondar, Hala J.; El-Khozondar, Rifa J.; Shabat, Mohammed M. (American Scientific Publishers, 2017-03-01)

In this work, dispersion characteristics and sensitivity of the propagation of TM surface plasmon through the proposed waveguide sensor. The proposed sensor containing a graphene at a finite distance filled with metamaterials ...

Dispersion Characteristics of Graphene Surface Plasmon Four Layers Waveguide

El-Khozondar, Hala J.; El-Khozondar, Rifa J.; Shabat, Mohammed M. (الجامعة الإسلامية - غزة, 2017)

A four layer waveguide has been introduced. Graphene layer is separate by metamaterial layer (MTM) from a plasmonic layer The dispersion characteristics of the propagation of TM surface Plasmon through the waveguide structure ...

Monte Carlo Implementation for Simulation of Ostwald Ripening Via Long Range Diffusion in Two-Phase Solids

El-Khozondar, Rifa J.; El-Khozondar, Hala J. (2017)

Numerical simulations based on the Monte Carlo Potts model are used to study coupling of grain growth and Ostwald ripening in two-phase polycrystalline materials. The ratio of the grain boundary energy to the interphase ...

Grain Size Distribution and topological correlations During Ostwald Ripening: Monte Carlo Potts model simulation

El-Khozondar, Rifa J.; El-Khozondar, Hala J. (2016)

Practically most polycrystalline materials such as ceramics are sintered by liquid during processing; for example, tungsten carbide applied for cutting tools. In liquid sintering, grain structure is controlled by Ostwald ...

Design of Voltage control Oscillator using Nonlinear Composite Right/Left-Handed Transmission Line

El-Khozondar, Hala J.; Abu-Marasa, Mahmoud; El-Khozondar, Rifa J.; Elbahri, Mady; Zouhdi, Said (2016)

In the present work, we propose a voltage control oscillator (VCO) at high frequency consists of nonlinear composite right/left-handed transmission line (CRLH-TL) loaded with Resonant Tunneling Diode (RTD). We designed ...

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