MEHWISH NISAR

PhD Graduate

PhD program:: XXXIV


advisor: Fabrizio Frezza

Thesis title: Electrical Response of Basic Scatterers And Scattering from Biological Samples

This thesis mainly addresses two electromagnetic problems. In first part, the electrostatic response of a multi-layer and Radially Anisotropic (RA) sphere, cylinder and dielectric half-ellipse has been examined by computing polarizability of each shape. For multi-layer spherical and cylindrical shapes, permittivity components have different values in radial and tangential directions. For both shapes, transmission line method is presented for finding their polarizability and hence effective permittivity. Each of these are presented as a function of positive permittivity. It is also presented that there exist a certain relationship between radial and tangential permittivity components for each layer, for which both RA shapes can be used in cloaking isotropic object of any shape and with any permittivity value. For dielectric half-elliptic object, two special cases are investigated: one series, the other parallel. Polarizability cannot be calculated purely analytically, hence a large matrix equation must be constructed and solved. The polarizability of a half-ellipse is presented as a function of relative permittivity. With positive values for permittivity, the results are quite accurate and they are verified by computing the polarizability numerically. The second part, examines the polarisation-resolved imaging. This technique has been applied to isotropic (Teflon) reference sample and anisotropic (Wood) reference sample. Both samples are exposed to linearly polarized light and then based on radiance, we are able to distinguish two samples and recognize each sample by identifying its behavior. Later, we attempt to study the difference between wood (horizontal and vertical) and teflon samples using Mueller matrix polarimetry. We tend to find Mueller matrix coefficients using two approaches.

Research products

11573/1702408 - 2024 - Finding the polarizability of dielectric half-ellipse
Nisar, Mehwish; Batool, Sidra; Mangini, Fabio; Wallén, Henrik; Sihvola, Ari; Frezza, Fabrizio - 01a Articolo in rivista
paper: JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS (Utrecht: VSP) pp. 134-149 - issn: 1569-3937 - wos: WOS:001095910400001 (0) - scopus: 2-s2.0-85176109089 (0)

11573/1620624 - 2022 - Recognition of bio-structural anisotropy by polarization resolved imaging
Fazio, Eugenio; Batool, Sidra; Nisar, Mehwish; Alonzo, Massimo; Frezza, Fabrizio - 01a Articolo in rivista
paper: ELECTRONICS (Basel : MDPI) pp. 1-11 - issn: 2079-9292 - wos: WOS:000746975700001 (2) - scopus: 2-s2.0-85122874459 (2)

11573/1621798 - 2021 - Multiple scattering by two PEC spheres using translation addition theorem
Batool, Sidra; Nisar, Mehwish; Dinia, Lorenzo; Mangini, Fabio; Frezza, Fabrizio - 01a Articolo in rivista
paper: ELECTRONICS (Basel : MDPI) pp. - - issn: 2079-9292 - wos: WOS:000741241900001 (3) - scopus: (0)

11573/1620606 - 2021 - Scattering of an inhomogeneous wave impinging on parallel stratified cylinders
Nisar, Mehwish; Batool, Sidra; Dinia, Lorenzo; Mangini, Fabio; Frezza, Fabrizio - 04b Atto di convegno in volume
conference: XXXIVth General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS) 2021 (Rome)
book: XXXIVth General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS) 2021 - ()

11573/1620600 - 2021 - Mueller matrix polarimetry for differentiating characteristic features of different materials (wood, shinning steel, unpolished plastic)
Nisar, Mehwish; Batool, Sidra; Mangini, Fabio; Fazio, Eugenio; Frezza, Fabrizio - 04b Atto di convegno in volume
conference: XXXIVth General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS) 2021 (Rome)
book: URSI GASS 2021 - ()

11573/1620611 - 2021 - Multiple scattering by two PEC sphere
Nisar, Mehwish; Batool, Sidra; Mangini, Fabio; Fazio, Eugenio; Frezza, Fabrizio - 04b Atto di convegno in volume
conference: XXXIVth General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS) 2021 (Rome)
book: XXXIVth General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS) 2021 - ()

11573/1620486 - 2021 - Polarizability of dielectricprolate half ellipse
Nisar, Mehwish; Batool, Sidra; Mangini, Fabio; Frezza, Fabrizio - 04b Atto di convegno in volume
conference: 15th European Conference on Antennas and Propagation (EuCAP) 2021 (Virtual)
book: 15th European Conference on Antennas and Propagation (EuCAP), 2021 - ()

11573/1620504 - 2021 - Absorption and invisibility of a Transparent Radial Anisotropy (TRA) cylinder
Nisar, Mehwish; Batool, Sidra; Mangini, Fabio; Frezza, Fabrizio - 04b Atto di convegno in volume
conference: 15th European Conference on Antennas and Propagation (EuCAP) 2021 (Virtual)
book: 15th European Conference on Antennas and Propagation (EuCAP), 2021 - ()

11573/1620559 - 2021 - Interpreting Mueller matrix of anisotropic material
Nisar, Mehwish; Batool, Sidra; Mangini, Fabio; Frezza, Fabrizio; Fazio, Eugenio - 04b Atto di convegno in volume
conference: 15th European Conference on Antennas and Propagation (EuCAP) 2021 (Virtual)
book: 15th European Conference on Antennas and Propagation (EuCAP), 2021 - ()

11573/1618791 - 2021 - To study the Mueller matrix polarimetry for the characterization of wood and Teflon flat samples
Sidra, Batool; Nisar, Mehwish; Mangini, Fabio; Frezza, Fabrizio; Fazio, Eugenio - 01a Articolo in rivista
paper: RESULTS IN OPTICS (Amsterdam: Elsevier B.V.) pp. 100102- - issn: 2666-9501 - wos: WOS:001203543000003 (3) - scopus: 2-s2.0-85122863710 (3)

11573/1443734 - 2020 - Electromagnetic interaction with a monodispersed system in sedimentation equilibrium
Batool, S.; Dinia, L.; Frezza, F.; Mangini, F.; Nisar, M. - 04b Atto di convegno in volume
conference: URSI GASS 2020 (Roma)
book: Proc. URSI GASS 2020 - ()

11573/1443737 - 2020 - Elliptically inhomogeneous plane wave impinging on an infinite number of parallel cylinders
Batool, S.; Dinia, L.; Frezza, F.; Mangini, F.; Nisar, M. - 04b Atto di convegno in volume
conference: URSI GASS 2020 (Roma)
book: Proc. URSI GASS 2020 - ()

11573/1443751 - 2020 - Characterization of microscopical anisotropy of biological tissues by polarization imaging
Batool, S.; Nisar, M.; Frezza, F.; Mangini, F.; Fazio, E. - 04b Atto di convegno in volume
conference: Italian Conference on Optics and Photonics (ICOP) (Parma)
book: Proc. 2020 Italian Conference on Optics and Photonics (ICOP) - ()

11573/1408426 - 2020 - Cloaking and magnifying using radial anisotropy in non-integer dimensional space
Batool, S.; Nisar, M.; Mangini, F.; Frezza, F. - 04b Atto di convegno in volume
conference: 14th European Conference on Antennas and Propagation (Copenhagen)
book: Proc. 14th European Conference on Antennas and Propagation (EuCAP 2020) - ()

11573/1443717 - 2020 - Cloaking using the anisotropic multilayer sphere
Batool, S.; Nisar, M.; Mangini, F.; Frezza, F. - 01a Articolo in rivista
paper: PHOTONICS (Basel : MDPI) pp. 1-12 - issn: 2304-6732 - wos: WOS:000578132400001 (10) - scopus: 2-s2.0-85090042745 (11)

11573/1443721 - 2020 - Cloaking using anisotropic multilayer circular cylinder
Batool, S.; Nisar, M.; Mangini, F.; Frezza, F. - 01a Articolo in rivista
paper: AIP ADVANCES (USA: American Institute of Physics,) pp. 1-7 - issn: 2158-3226 - wos: WOS:000570961800002 (10) - scopus: 2-s2.0-85092308261 (10)

11573/1443739 - 2020 - The polarizability of an alternative sequence of isotropic and radially anisotropic multilayer sphere
Batool, S.; Nisar, M.; Mangini, F.; Frezza, F. - 04b Atto di convegno in volume
conference: URSI GASS 2020 (Roma)
book: Proc. URSI GASS 2020 - ()

11573/1443743 - 2020 - Finding the polarizability of radially anisotropic multilayer circular cylinder
Batool, S.; Nisar, M.; Mangini, F.; Frezza, F. - 04b Atto di convegno in volume
conference: URSI GASS 2020 (Roma)
book: Proc. URSI GASS 2020 - ()

11573/1443730 - 2020 - Polarization imaging for identifying the microscopical orientation of biological structures
Batool, S.; Nisar, M.; Mangini, F.; Frezza, F.; Fazio, E. - 04b Atto di convegno in volume
conference: URSI GASS 2020 (Roma)
book: Proc. URSI GASS 2020 - ()

11573/1653176 - 2020 - Erratum: “Cloaking using anisotropic multilayer circular cylinder” [AIP Adv. 10, 095312 (2020)]
Sidra, Batool; Nisar, Mehwish; Mangini, Fabio; Frezza, Fabrizio - 01b Commento, Erratum, Replica e simili
paper: AIP ADVANCES (USA: American Institute of Physics,) pp. 119904- - issn: 2158-3226 - wos: WOS:000591837100001 (0) - scopus: 2-s2.0-85096141554 (1)

11573/1653174 - 2020 - Scattering of light from the systemic circulatory system
Sidra, Batool; Nisar, Mehwish; Mangini, Fabio; Frezza, Fabrizio; Fazio, Eugenio - 01a Articolo in rivista
paper: DIAGNOSTICS (Basel: MDPI) pp. 1026- - issn: 2075-4418 - wos: WOS:000602089800001 (6) - scopus: 2-s2.0-85101815086 (8)

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