Outputs (38)

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.

A Tool for Modeling, Design and Applications of MetaSurfaces (2018)
Presentation / Conference Contribution
La Spada, L., & Vegni, A. M. (2018, November). A Tool for Modeling, Design and Applications of MetaSurfaces. Presented at Latin America Optics and Photonics Conference, Lima, Peru

We present a new approach to model, design and realize MetaSurface structures for sensing and telecommunications. The method turns out to be versatile and has great potential to be used for practical electromagnetic applications.

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.

Modeling and manufacturing for surface wave control. (2018)
Presentation / Conference Contribution
Spada, L. L., & Hao, Y. (2017, September). Modeling and manufacturing for surface wave control. Presented at 2017 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP), Pavia, Italy

Recently, a huge interest emerged in the field of surface waves, in particular the possibility to control and manipulate their propagation properties at will. The aim of this paper is to present a new approach to design new devices for surface waves... Read More about Modeling and manufacturing for surface wave control..

Electromagnetic wave control by metasurfaces: From design to manufacturing (2017)
Presentation / Conference Contribution
Spada, L. L., & Hao, Y. (2017, August). Electromagnetic wave control by metasurfaces: From design to manufacturing. Presented at 2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS), Montreal, QC

Recently, there have been a new interest in controlling and manipulating electromagnetic waves in different frequency ranges. The development of new two-dimensional materials, called meta-surfaces, have been used to control and tailor the electromagn... Read More about Electromagnetic wave control by metasurfaces: From design to manufacturing.

Electromagnetic waves control for antennas applications (2017)
Presentation / Conference Contribution
Spada, L. L., & Hao, Y. (2017, September). Electromagnetic waves control for antennas applications. Presented at 2017 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC), Verona, Italy

Recently, great interest in controlling and manipulating electromagnetic wave propagation from microwave to optical frequencies, has been emerged. Artificial sheet materials with sub-wavelength thickness, meta-surfaces, have been applied to control w... Read More about Electromagnetic waves control for antennas 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.

Tailoring of electromagnetic waves by metasurfaces (2017)
Presentation / Conference Contribution
Spada, L. L., & Hao, Y. (2017, March). Tailoring of electromagnetic waves by metasurfaces. Presented at 2017 11th European Conference on Antennas and Propagation (EUCAP), Paris, France

In the last few years, non-homogeneous metasurfaces captured huge interest in tailoring electromagnetic waves, ranging from microwave to optical frequencies. Several technologies have been proposed, but a general design approach is still missing: the... Read More about Tailoring of electromagnetic waves by metasurfaces.

Surface wave manipulation based on transformation optics: From design to manufacturing (2017)
Presentation / Conference Contribution
La Spada, L., & Hao, Y. (2016, October). Surface wave manipulation based on transformation optics: From design to manufacturing. Presented at 2016 International Symposium on Antennas and Propagation (ISAP), Okinawa, Japan

In the last few years, much interest has grown in the control and manipulation of electromagnetic surface waves. The aim of this paper is to present a new design and manufacturing approach based on Transformation Optics. To validate the proposed desi... Read More about Surface wave manipulation based on transformation optics: From design to manufacturing.

Microwave devices for controlling surface waves (2016)
Presentation / Conference Contribution
La Spada, L., & Hao, Y. (2016, August). Microwave devices for controlling surface waves. Presented at 2016 URSI International Symposium on Electromagnetic Theory (EMTS), Espoo, Finland

In the last few years, great interest grown up in the control and manipulation of electromagnetic surface wave. The aim of this paper is to present a novel approach to design new devices able to manipulate them. To validate the proposed design, two s... Read More about Microwave devices for controlling surface waves.

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.

A generic design approach for metasurfaces to manipulate surface waves (2016)
Presentation / Conference Contribution
La Spada, L., & Hao, Y. (2016, April). A generic design approach for metasurfaces to manipulate surface waves. Presented at 2016 10th European Conference on Antennas and Propagation (EuCAP), Davos, Switzerland

Recently, there have been increasing interests in controlling and manipulating surface wave propagation based on metasufaces ranging from microwave to optical frequencies. Despite this, a general design tool, linking metasurfaces with classic EM theo... Read More about A generic design approach for metasurfaces to manipulate surface waves.

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 wave cloaking using transformation optics (2015)
Presentation / Conference Contribution
La Spada, L., & Hao, Y. (2015, May). Surface wave cloaking using transformation optics. Presented at 2015 1st URSI Atlantic Radio Science Conference (URSI AT-RASC), Gran Canaria, Spain

Recently, there has been an increasing interest in the study of manipulating surface waves from microwave to optical frequencies [1, 2], especially for the design of conformal antennas and devices in communications and radar applications [3]. Some of... Read More about Surface wave cloaking using transformation optics.

Epsilon-Near-Zero Nanoantennas (2014)
Presentation / Conference Contribution
La Spada, L. (2014, September). Epsilon-Near-Zero Nanoantennas. Presented at 9th International Conference on Body Area Networks, London, Great Britain

In this paper the design of Epsilon Near Zero (ENZ) antennas, working in the infrared and optical regime, is presented. Two different structures are considered: the classical PEC antenna and the dielectric dipole covered by ENZ material antenna. The... Read More about Epsilon-Near-Zero Nanoantennas.

Metasurface-Epsilon Near Zero-based Electromagnetic Wave Absorber (2014)
Presentation / Conference Contribution
La Spada, L. (2014, September). Metasurface-Epsilon Near Zero-based Electromagnetic Wave Absorber. Presented at 9th International Conference on Body Area Networks, London, Great Britain

The purpose of this paper is to design a new electromagnetic wave absorber. It consists of a planar layered structure with an isotropic Epsilon-Near-Zero (ENZ) material and a gold metal inclusion, both placed over a perfect conductor (PEC) plate. Abs... Read More about Metasurface-Epsilon Near Zero-based Electromagnetic Wave Absorber.

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.