All Outputs (22)

Targeted dielectric coating of silver nanoparticles with silica to manipulate optical properties for metasurface applications (2022)
Journal Article
Lalegani, Z., Ebrahimi, S. S., Hamawandi, B., La Spada, L., Batili, H., & Toprak, M. (2022). Targeted dielectric coating of silver nanoparticles with silica to manipulate optical properties for metasurface applications. Materials Chemistry and Physics, 287, Article 126250. https://doi.org/10.1016/j.matchemphys.2022.126250

An epsilon-negative metamaterial (ENM) containing core@shell nanoparticles (NPs) was designed, where silver (Ag) NPs served as core and silica (SiO2) was used as spacer shell. AgNPs were synthesized in large scale, using microwave-a... Read More about Targeted dielectric coating of silver nanoparticles with silica to manipulate optical properties for metasurface applications.

The Graphene Field Effect Transistor Modeling Based on an Optimized Ambipolar Virtual Source Model for DNA Detection (2021)
Journal Article
Akbari, M., Shahbazzadeh, M. J., La Spada, L., & Khajehzadeh, A. (2021). The Graphene Field Effect Transistor Modeling Based on an Optimized Ambipolar Virtual Source Model for DNA Detection. Applied Sciences, 11(17), Article 8114. https://doi.org/10.3390/app11178114

The graphene-based Field Effect Transistors (GFETs), due to their multi-parameter characteristics, are growing rapidly as an important detection component for the apt detection of disease biomarkers, such as DNA, in clinical diagnostics and biomedica... Read More about The Graphene Field Effect Transistor Modeling Based on an Optimized Ambipolar Virtual Source Model for DNA Detection.

Modeling, design, and synthesis of gram-scale monodispersed silver nanoparticles using microwave-assisted polyol process for metamaterial applications (2020)
Journal Article
Lalegani, Z., Ebrahimi, S. S., Hamawandi, B., La Spada, L., & Toprak, M. (2020). Modeling, design, and synthesis of gram-scale monodispersed silver nanoparticles using microwave-assisted polyol process for metamaterial applications. Optical Materials, 108, Article 110381. https://doi.org/10.1016/j.optmat.2020.110381

High-yield monodispersed silver (Ag) nanospheres were modeled, designed, and synthesized by microwave-assisted (MW-assisted) polyol method from AgNO3, polyvinyl pyrrolidone (PVP), and ethylene glycol (EG), as precursors, at 145 °C within a short reac... Read More about Modeling, design, and synthesis of gram-scale monodispersed silver nanoparticles using microwave-assisted polyol process for metamaterial applications.

Artificial Intelligence and COVID-19: Deep Learning Approaches for Diagnosis and Treatment (2020)
Journal Article
Jamshidi, M. B., Lalbakhsh, A., Talla, J., Peroutka, Z., Hadjilooei, F., Lalbakhsh, P., …Mohyuddin, W. (2020). Artificial Intelligence and COVID-19: Deep Learning Approaches for Diagnosis and Treatment. IEEE Access, 8, 109581-109595. https://doi.org/10.1109/access.2020.3001973

COVID-19 outbreak has put the whole world in an unprecedented difficult situation bringing life around the world to a frightening halt and claiming thousands of lives. Due to COVID-19’s spread in 212 countries and territories and increasing numbers o... Read More about Artificial Intelligence and COVID-19: Deep Learning Approaches for Diagnosis and Treatment.

Electromagnetic and thermal nanostructures: from waves to circuits (2020)
Journal Article
Donnelly, E., & La Spada, L. (2020). Electromagnetic and thermal nanostructures: from waves to circuits. Engineering Research Express, 2(1), 015045. https://doi.org/10.1088/2631-8695/ab7a78

Nanomaterials have become crucial to develop new technologies in several practical applications fields. Until now nanostructures have been mostly associated with electromagnetism and optics. The aim of this letter is to extend the applicability of su... Read More about Electromagnetic and thermal nanostructures: from waves to circuits.

Curvilinear MetaSurfaces for Surface Wave Manipulation. (2019)
Journal Article
La Spada, L., Spooner, C., Haq, S., & Hao, Y. (2019). Curvilinear MetaSurfaces for Surface Wave Manipulation. Scientific Reports, 9(1), Article 3107. https://doi.org/10.1038/s41598-018-36451-8

Artificial sheet materials, known as MetaSurfaces, have been applied to fully control both space and surface waves due to their exceptional abilities to dynamically tailor wave fronts and polarization states, while maintaining small footprints. Howev... Read More about Curvilinear MetaSurfaces for Surface Wave Manipulation..

Metasurfaces for Advanced Sensing and Diagnostics (2019)
Journal Article
La Spada, L. (2019). Metasurfaces for Advanced Sensing and Diagnostics. Sensors, 19(2), 355. https://doi.org/10.3390/s19020355

Interest in sensors and their applications is rapidly evolving, mainly driven by the huge demand of technologies whose ultimate purpose is to improve and enhance health and safety. Different electromagnetic technologies have been recently used and ac... Read More about Metasurfaces for Advanced Sensing and Diagnostics.

Electromagnetic Nanoparticles for Sensing and Medical Diagnostic Applications (2018)
Journal Article
La Spada, L., & Vegni, L. (2018). Electromagnetic Nanoparticles for Sensing and Medical Diagnostic Applications. Materials, 11(4), 603. https://doi.org/10.3390/ma11040603

A modeling and design approach is proposed for nanoparticle-based electromagnetic devices. First, the structure properties were analytically studied using Maxwell’s equations. The method provides us a robust link between nanoparticles electromagnetic... Read More about Electromagnetic Nanoparticles for Sensing and Medical Diagnostic Applications.

Near-zero-index wires. (2017)
Journal Article
La Spada, L., & Vegni, L. (2017). Near-zero-index wires. Optics express, 25(20), 23699-23708. https://doi.org/10.1364/oe.25.023699

In this work, near-zero-index material boundary properties have been exploited to achieve new electromagnetic functionalities. The extraordinary guiding properties of a cylindrical dielectric rod waveguide surrounded by a thin epsilon-mu-near-zero sh... Read More about Near-zero-index wires..

Modeling and design for electromagnetic surface wave devices (2017)
Journal Article
La Spada, L., Haq, S., & Hao, Y. (2017). Modeling and design for electromagnetic surface wave devices. Radio Science, 52(9), 1049-1057. https://doi.org/10.1002/2017rs006379

A great deal of interest has reemerged recently in the study of surface waves. The possibility to control and manipulate electromagnetic wave propagations at will opens many new research areas and leads to lots of novel applications in engineering. I... Read More about Modeling and design for electromagnetic surface wave devices.

Surface Wave Cloak from Graded Refractive Index Nanocomposites (2016)
Journal Article
La Spada, L., McManus, T. M., Dyke, A., Haq, S., Zhang, L., Cheng, Q., & Hao, Y. (2016). Surface Wave Cloak from Graded Refractive Index Nanocomposites. Scientific Reports, 6(1), 29363. https://doi.org/10.1038/srep29363

Recently, a great deal of interest has been re-emerged on the possibility to manipulate surface waves, in particular, towards the THz and optical regime. Both concepts of Transformation Optics (TO) and metamaterials have been regarded as one of key e... Read More about Surface Wave Cloak from Graded Refractive Index Nanocomposites.

Isotropic and anisotropic surface wave cloaking techniques (2016)
Journal Article
McManus, T. M., La Spada, L., & Hao, Y. (2016). Isotropic and anisotropic surface wave cloaking techniques. Journal of Optics, 18(4), 044005. https://doi.org/10.1088/2040-8978/18/4/044005

In this paper we compare two different approaches for surface waves cloaking. The first technique is a unique application of Fermat's principle and requires isotropic material properties, but owing to its derivation is limited in its applicability. T... Read More about Isotropic and anisotropic surface wave cloaking techniques.

Metamaterial-based wideband electromagnetic wave absorber (2016)
Journal Article
La Spada, L., & Vegni, L. (2016). Metamaterial-based wideband electromagnetic wave absorber. Optics express, 24(6), 5763. https://doi.org/10.1364/oe.24.005763

In this paper, an analytical and numerical study of a new type of electromagnetic absorber, operating in the infrared and optical regime, is proposed. Absorption is obtained by exploiting Epsilon-Near-Zero materials. The structure electromagnetic pro... Read More about Metamaterial-based wideband electromagnetic wave absorber.

Surface plasmon resonance of nanoshell particles with PMMA-graphene core (2014)
Journal Article
Tarparelli, R., Iovine, R., La Spada, L., & Vegni, L. (2014). Surface plasmon resonance of nanoshell particles with PMMA-graphene core. COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, 33(6), 2016-2029. https://doi.org/10.1108/compel-11-2013-0351

The purpose of this paper is to contribute an analytical and numerical study of a new type of nanoshell particles operating in the visible regime. The structure consists of a core/shell particle, arranged in a planar array configuration, with a poly... Read More about Surface plasmon resonance of nanoshell particles with PMMA-graphene core.

Spectral Green's Function for SPR Meta-Structures (2014)
Journal Article
Iovine, R., La Spada, L., Tarparelli, R., & Vegni, L. (2014). Spectral Green's Function for SPR Meta-Structures. Materials Science Forum, 792, 110-114. https://doi.org/10.4028/www.scientific.net/msf.792.110

In this paper we propose a new approach to study the electromagnetic field in Surface Plasmon Resonance (SPR) meta-structures. The geometry is a planar structure infinitely extended with a pulse excitation current embedded in the substrate. The gener... Read More about Spectral Green's Function for SPR Meta-Structures.

Optical Properties of Modified Nanorod Particles for Biomedical Sensing (2014)
Journal Article
Iovine, R., Spada, L. L., & Vegni, L. (2014). Optical Properties of Modified Nanorod Particles for Biomedical Sensing. IEEE Transactions on Magnetics, 50(2), 169-172. https://doi.org/10.1109/tmag.2013.2284552

In this paper, an analytical and numerical investigation for modified gold nanorod particles, operating in the visible and in the infrared regime is proposed. The modified particles consist in a core/shell structure (dielectric core/metallic shell) e... Read More about Optical Properties of Modified Nanorod Particles for Biomedical Sensing.

Conical Nanoparticles for Blood Disease Detection (2013)
Journal Article
Spada, L. L., Iovine, R., Tarparelli, R., & Vegni, L. (2013). Conical Nanoparticles for Blood Disease Detection. Advances in nanoparticles, 02(03), 259-265. https://doi.org/10.4236/anp.2013.23036

Metallic nanoparticles play an important role in the design of sensing platforms. In this paper, a new electromagnetic study for conical metal nanoparticles, working in the Near Infrared and Visible frequency regime, is proposed. The structures consi... Read More about Conical Nanoparticles for Blood Disease Detection.

Nanoparticle device for biomedical and optoelectronics applications (2013)
Journal Article
Iovine, R., La Spada, L., & Vegni, L. (2013). Nanoparticle device for biomedical and optoelectronics applications. COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, 32(5), 1596-1608. https://doi.org/10.1108/compel-03-2013-0105

In this contribution, the aim is to present a nanoparticle device, operating in the visible regime based on the localized surface plasmon resonance (LSPR) phenomenon. The nanoparticle electromagnetic properties are evaluated by a new analytical mod... Read More about Nanoparticle device for biomedical and optoelectronics applications.

Electromagnetic modeling of ellipsoidal nanoparticles for sensing applications (2013)
Journal Article
Spada, L. L., Iovine, R., & Vegni, L. (2013). Electromagnetic modeling of ellipsoidal nanoparticles for sensing applications. Optical Engineering, 52(5), 051205. https://doi.org/10.1117/1.oe.52.5.051205

We present a new analytical study of metallic nanoparticles, working in the infrared and visible frequency range. The structure consists of triaxial ellipsoidal resonating inclusions embedded in a dielectric environment. Our aim is to develop a new a... Read More about Electromagnetic modeling of ellipsoidal nanoparticles for sensing applications.

Modified Bow-Tie Nanoparticles Operating in the Visible and Near Infrared Frequency Regime (2013)
Journal Article
Iovine, R., Spada, L. L., & Vegni, L. (2013). Modified Bow-Tie Nanoparticles Operating in the Visible and Near Infrared Frequency Regime. Advances in nanoparticles, 02(01), 21-27. https://doi.org/10.4236/anp.2013.21005

In this contribution electromagnetic properties of traditional and modified bow-tie nanoparticles are investigated. The modified bow-tie particles consist of a pair of opposing metallic truncated triangles, embedded in a dielectric environment, with... Read More about Modified Bow-Tie Nanoparticles Operating in the Visible and Near Infrared Frequency Regime.