Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Abbas Alighanbari"'
Autor:
Mohammad R. Talebnejad, Ali Sadeghi-Sarvestani, M. Hossein Nowroozzadeh, Seyed Mohammad J. Mortazavi, Abbas Alighanbari, Mohammad R. Khalili
Publikováno v:
Journal of Current Ophthalmology, Vol 30, Iss 1, Pp 74-79 (2018)
Purpose: Mobile cell phones are used extensively these days, and their microwave (MW) radiation has been shown to affect the eye. The purpose of the present study was to evaluate the effects of MW radiation on rabbit retina. Methods: This experimenta
Externí odkaz:
https://doaj.org/article/57890f72903f42a58194f521d2be33ed
Autor:
Isa Mazraeh-Fard, Abbas Alighanbari
Publikováno v:
Applied optics. 61(19)
In this work, we present an equivalent circuit model that facilitates the analysis and design of graphene-based transmission- and reflection-mode tunable terahertz polarizers. The conditions for polarization conversion are analytically derived, and a
Autor:
Ahmad Deel, Abbas Alighanbari
Publikováno v:
Applied optics. 61(2)
Subwavelength focusing of light is on-demand for overcoming the diffraction limit of light for applications such as photolithography. A prism-shaped hyperlens capable of focusing incident light to a subwavelength scale is proposed. The lens lifts the
Autor:
Isa Mazraeh-Fard, Abbas Alighanbari
Publikováno v:
Optics Continuum. 1:2607
Ultrathin tunable broadband terahertz transmission mode linear-to-circular polarizers are proposed and numerically validated. Each structure consists of a dielectric substrate with slotted graphene patches on one or both sides of the substrate. Both
Publikováno v:
Superlattices and Microstructures. 129:139-145
Full-adders are basic devices used widely in many computational circuits. In this paper, by utilizing the tuning capability of graphene-dielectric-metal waveguides, an efficient electro-optical full-adder with compact size is presented. In our struct
Publikováno v:
IET Microwaves, Antennas & Propagation. 13:898-903
A three-dimensional (3-D) transformation optics (TO) methodology is presented using polyhedral meshing and homogeneous materials, in which, the topology of the device is varied, in order to achieve material simplification. The device is divided into
Autor:
Maryam Jaldi, Abbas Alighanbari
Publikováno v:
AEU - International Journal of Electronics and Communications. 144:154036
Graphene-based artificial magnetic conductor (AMC) structures featuring wideband and tunable responses at terahertz frequencies are presented. The unit cells of the proposed structures comprise curved coupled microstrip line (CCML) resonators, in whi
Publikováno v:
Applied Physics B. 126
A compact and ultra-wideband multimode interferometer (MMI)-based polarization beam splitter (PBS) is designed in a silicon-on-insulator (SOI) platform. A sub-wavelength grating (SWG) structure is employed in the multimode region to reduce the overal
Autor:
Ali Sadeghi-Sarvestani, Seyed Mohammad Javad Mortazavi, Mohammad Reza Khalili, M. Hossein Nowroozzadeh, Abbas Alighanbari, Mohammad R. Talebnejad
Publikováno v:
Journal of Current Ophthalmology
Journal of Current Ophthalmology, Vol 30, Iss 1, Pp 74-79 (2018)
Journal of Current Ophthalmology, Vol 30, Iss 1, Pp 74-79 (2018)
Purpose Mobile cell phones are used extensively these days, and their microwave (MW) radiation has been shown to affect the eye. The purpose of the present study was to evaluate the effects of MW radiation on rabbit retina. Methods This experimental
Autor:
M. Mehdi Keshavarz, Abbas Alighanbari
Publikováno v:
Applied optics. 58(13)
A novel terahertz (THz) refractive index sensor based on Tamm plasmon-polaritons (TPPs), comprising a Bragg reflector and a graphene layer, is proposed. A semi-analytical transfer matrix method is used to study the proposed structure and its sensing