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Author

  • Constantinos Valagiannopoulos

Aberration-free planar focusing based on parity-time symmetric nonlocal metamaterials

Monticone, F., Alu, A. & Valagiannopoulos, C. A., Oct 22 2015, 2015 IEEE Antennas and Propagation Society International Symposium, APS 2015 - Proceedings. Institute of Electrical and Electronics Engineers Inc., p. 252-253 2 p. 7304512. (IEEE Antennas and Propagation Society, AP-S International Symposium (Digest); vol. 2015-October).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

A Cartesian cloaking comprised of gradually sparser dielectric layers exploiting Snell's law

Valagiannopoulos, C. A., Jul 2 2012, Proceedings of 6th European Conference on Antennas and Propagation, EuCAP 2012. p. 2688-2692 5 p. 6206412. (Proceedings of 6th European Conference on Antennas and Propagation, EuCAP 2012).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Achieving Anomalous Refraction with Metasurfaces Composed by Two Ordinary Dielectric Materials

Tsitsas, N. L. & Valagiannopoulos, C. A., Nov 13 2018, 2018 12th International Congress on Artificial Materials for Novel Wave Phenomena, METAMATERIALS 2018. Institute of Electrical and Electronics Engineers Inc., p. 395-397 3 p. 8534170. (2018 12th International Congress on Artificial Materials for Novel Wave Phenomena, METAMATERIALS 2018).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

A grating from coated PEC cylinders functioning as an electromagnetic absorber

Valagiannopoulos, C. A. & Tretyakov, S. A., Dec 1 2013, 2013 IEEE Antennas and Propagation Society International Symposium, APSURSI 2013 - Proceedings. p. 1986-1987 2 p. 6711651. (IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Aharonov-Bohm detection of two-dimensional magnetostatic cloaks

Valagiannopoulos, C. A., Askarpour, A. N. & Alù, A., Dec 10 2015, In : Physical Review B - Condensed Matter and Materials Physics. 92, 22, 224106.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Aharonov-Bohm-inspired tomographic imaging via compressive sensing

Valagiannopoulos, C., Marengo, E. A., Dimakis, A. G. & Alù, A., Oct 3 2018, In : IET Microwaves, Antennas and Propagation. 12, 12, p. 1890-1894 5 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Amplifying the response of a buried object by depositing a passive layer on the ground

Valagiannopoulos, C. A., Tsitsas, N. L. & Sihvola, A. H., Sep 2 2015, 2015 Computational Electromagnetics International Workshop, CEM 2015. Institute of Electrical and Electronics Engineers Inc., p. 28-29 2 p. 7237424. (2015 Computational Electromagnetics International Workshop, CEM 2015).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Analytical investigations of ground modifications assisting the detection of a buried object

Valagiannopoulos, C. A., Tsitsas, N. L. & Sihvola, A. H., Sep 19 2016, 2016 URSI International Symposium on Electromagnetic Theory, EMTS 2016. Institute of Electrical and Electronics Engineers Inc., p. 783-786 4 p. 7571519

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Analytical model for coupling of waves between a homogeneous medium and a volumetric transmission-line network

Valagiannopoulos, C. A., Alitalo, P. & Tretyakov, S. A., Nov 1 2011, 2011 IEEE International Symposium on Antennas and Propagation - Proceedings. p. 2597-2600 4 p. 5997056. (IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

An iterative semi-analytical technique solving the boundary value problem of transmission through an anisotropic wedge

Valagiannopoulos, C. A. & Simovski, C. R., Dec 26 2012, In : Radio Science. 47, 6, RS6004.

Research output: Contribution to journalArticle

3 Citations (Scopus)
14 Citations (Scopus)

Approximating the mechanism of perfect electromagnetic boundaries by using magneto-dielectric materials

Valagiannopoulos, C. A. & Sihvola, A. H., Dec 2 2013, Proceedings of the 2013 International Conference on Electromagnetics in Advanced Applications, ICEAA 2013. p. 1036-1039 4 p. 6632400. (Proceedings of the 2013 International Conference on Electromagnetics in Advanced Applications, ICEAA 2013).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Basins of attraction in asymmetric photonic couplers

Valagiannopoulos, C., Zhiyenbayev, Y., Kominis, Y. & Kovanis, V., Sep 2019, Proceedings of the 2019 21st International Conference on Electromagnetics in Advanced Applications, ICEAA 2019. Institute of Electrical and Electronics Engineers Inc., p. 338-341 4 p. 8879312. (Proceedings of the 2019 21st International Conference on Electromagnetics in Advanced Applications, ICEAA 2019).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Blacker than ideally black: Double negative conjugately matched cylinders

Vehmas, J., Valagiannopoulos, C., Tretyakov, S. & Maslovski, S., Nov 30 2015, 2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, METAMATERIALS 2015. Institute of Electrical and Electronics Engineers Inc., p. 511-513 3 p. 7342506

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Breaking the black-body limit with resonant surfaces

Valagiannopoulos, C. A., Simovski, C. R. & Tretyakov, S. A., Jan 1 2017, In : EPJ Applied Metamaterials. 4, 5.

Research output: Contribution to journalArticle

Open Access

Classical and quantum dispersion-free coherent propagation by tailoring multimodal coupling

Mandilara, A., Valagiannopoulos, C. & Akulin, V. M., Feb 25 2019, In : Physical Review A. 99, 2, 023849.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Cloaking a bump inside a single isotropic lossless dielectric

Valagiannopoulos, C. A., Tsitsas, N. L. & Sihvola, A. H., Aug 27 2015, 2015 9th European Conference on Antennas and Propagation, EuCAP 2015. Institute of Electrical and Electronics Engineers Inc., 7228455. (2015 9th European Conference on Antennas and Propagation, EuCAP 2015).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Cloaking a microstrip antenna: Integral equation modeling

Valagiannopoulos, C. A. & Tsitsas, N. L., Nov 7 2012, Proceedings of the 2012 International Conference on Electromagnetics in Advanced Applications, ICEAA'12. p. 383-386 4 p. 6328654. (Proceedings of the 2012 International Conference on Electromagnetics in Advanced Applications, ICEAA'12).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Computationally efficient optimization of coupling tapers for transmission-line networks under obliquely incident illumination

Valagiannopoulos, C. A. & Alitalo, P., Dec 1 2013, 2013 IEEE Antennas and Propagation Society International Symposium, APSURSI 2013 - Proceedings. p. 420-421 2 p. 6710871. (IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Concealing a perfectly conducting object with edges inside a dielectric superstrate

Valagiannopoulos, C. A. & Tsitsas, N. L., Dec 2 2013, Proceedings of the 2013 International Conference on Electromagnetics in Advanced Applications, ICEAA 2013. p. 1269-1272 4 p. 6632451. (Proceedings of the 2013 International Conference on Electromagnetics in Advanced Applications, ICEAA 2013).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Concentrating the electromagnetic power in a grounded dielectric slab excited by an external Gaussian beam

Tsitsas, N. L. & Valagiannopoulos, C. A., Dec 14 2012, Proceedings of the 14th International Conference on Mathematical Methods in Electromagnetic Theory, MMET 2012. p. 304-307 4 p. 6331251. (International Conference on Mathematical Methods in Electromagnetic Theory, MMET).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Conjugately-matched uniaxial metamaterials make extremely efficient absorbers, emitters, and reflectors

Valagiannopoulos, C. A., Simovski, C. R. & Tretyakov, S. A., Nov 16 2016, 2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, METAMATERIALS 2016. Institute of Electrical and Electronics Engineers Inc., p. 379-381 3 p. 7746406. (2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, METAMATERIALS 2016).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Consistent Integral Equation Modeling of Cloaking Planar Microstrip Antennas

Papadimopoulos, A. N., Tsitsas, N. L., Valagiannopoulos, C. A., Kantartzis, N. V., Antonopoulos, C. S. & Tsiboukis, T. D., Mar 1 2016, In : IEEE Transactions on Magnetics. 52, 3, 7203706.

Research output: Contribution to journalArticle

Controlling Reflection and Transmission with a Single Layer

Valagiannopoulos, C. A., Apr 1 2015, In : IEEE Antennas and Propagation Magazine. 57, 2, p. 318-323 6 p., 7089226.

Research output: Contribution to journalArticle

12 Citations (Scopus)

Conversion of evanescent waves into propagating modes by passing through a metamaterial prism: An iterative approximation method

Valagiannopoulos, C. A. & Simovski, C. R., Jul 1 2011, Proceedings of the 5th European Conference on Antennas and Propagation, EUCAP 2011. p. 95-99 5 p. 5782599. (Proceedings of the 5th European Conference on Antennas and Propagation, EUCAP 2011).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Core-shell nanospheres under visible light: Optimal absorption, scattering, and cloaking

Sheverdin, A. & Valagiannopoulos, C., Feb 19 2019, In : Physical Review B. 99, 7, 075305.

Research output: Contribution to journalArticle

11 Citations (Scopus)
4 Citations (Scopus)

Demand curves and operator strategies in the finnish mobile broadband market

Katsigiannis, M. & Valagiannopoulos, C., Jan 1 2014, In : International Journal of Business Data Communications and Networking. 10, 1, p. 30-46 17 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)

Demonstration of electromagnetic cloaking of conducting object by dielectric material cover

Alitalo, P. & Valagiannopoulos, C. A., Aug 16 2012, In : Electronics Letters. 48, 17, p. 1056-1057 2 p.

Research output: Contribution to journalArticle

8 Citations (Scopus)

Design and free-space measurements of a simple electromagnetic cloak for conducting cylindrical objects

Alitalo, P., Valagiannopoulos, C. A. & Culhaoglu, A. E., May 16 2013, In : AIP Advances. 3, 4, 042135.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Dielectric-coated PEC cylinders which do not scatter electromagnetic waves

Valagiannopoulos, C. A., Alitalo, P. & Tretyakov, S., Nov 7 2012, Proceedings of the 2012 International Conference on Electromagnetics in Advanced Applications, ICEAA'12. p. 90-91 2 p. 6328595. (Proceedings of the 2012 International Conference on Electromagnetics in Advanced Applications, ICEAA'12).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Efficient evaluation of the Green's function for a bended coplanar waveguide

Valagiannopoulos, C. A., Jul 2 2012, Proceedings of 6th European Conference on Antennas and Propagation, EuCAP 2012. p. 2191-2195 5 p. 6206304. (Proceedings of 6th European Conference on Antennas and Propagation, EuCAP 2012).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Electromagnetic absorption of gaussian beams by a grounded layered structure

Valagiannopoulos, C., Apr 1 2013, In : Radioengineering. 22, 1, p. 333-340 8 p.

Research output: Contribution to journalArticle

4 Citations (Scopus)
20 Citations (Scopus)

Electromagnetic cloaking of PEC cylinders with a single isotropic and homogeneous layer

Valagiannopoulos, C. A. & Alitalo, P., Dec 10 2012, 2012 IEEE International Symposiumon Antennas and Propagation, APSURSI 2012 - Proceedings. 6348712. (IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Electromagnetic energy sink

Valagiannopoulos, C. A., Vehmas, J., Simovski, C. R., Tretyakov, S. A. & Maslovski, S. I., Dec 1 2015, In : Physical Review B - Condensed Matter and Materials Physics. 92, 24, 245402.

Research output: Contribution to journalArticle

27 Citations (Scopus)

Electromagnetic propagation into parallel-plate waveguide in the presence of a skew metallic surface

Valagiannopoulos, C. A., Nov 2 2011, In : Electromagnetics. 31, 8, p. 593-605 13 p.

Research output: Contribution to journalArticle

21 Citations (Scopus)
Open Access
36 Citations (Scopus)

Emulating hyperbolic-media properties with conventional structures

Valagiannopoulos, C. A. & Tretyakov, S. A., Jun 2014, In : New Journal of Physics. 16, 063004.

Research output: Contribution to journalArticle

8 Citations (Scopus)

Engineering the emission of laser arrays to nullify the jamming from passive obstacles

Valagiannopoulos, C. & Kovanis, V., Aug 1 2018, In : Photonics Research. 6, 8, p. A43-A50

Research output: Contribution to journalArticle

3 Citations (Scopus)

Enhanced stability, bistability, and exceptional points in saturable active photonic couplers

Zhiyenbayev, Y., Kominis, Y., Valagiannopoulos, C., Kovanis, V. & Bountis, A., Oct 23 2019, In : Physical Review A. 100, 4, 043834.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Epsilon-near-zero behavior from plasmonic Dirac point: Theory and realization using two-dimensional materials

Mattheakis, M., Valagiannopoulos, C. A. & Kaxiras, E., 2016, In : Physical Review B. 94, 20, 201404.

Research output: Contribution to journalArticle

21 Citations (Scopus)

Excitation of a grounded lossy dielectric slab by an external complex source point beam

Tsitsas, N. L. & Valagiannopoulos, C. A., Aug 27 2015, 2015 9th European Conference on Antennas and Propagation, EuCAP 2015. Institute of Electrical and Electronics Engineers Inc., 7228895. (2015 9th European Conference on Antennas and Propagation, EuCAP 2015).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Excitation of guided waves on a lossless dielectric slab by an E-polarized complex source point beam

Tsitsas, N. L., Valagiannopoulos, C. & Nosich, A. I., Aug 1 2019, In : IEEE Transactions on Antennas and Propagation. 67, 8, p. 5532-5543 12 p., 8705661.

Research output: Contribution to journalArticle

Field enhancement in a grounded dielectric slab by using a single superstrate layer

Valagiannopoulos, C. A. & Tsitsas, N. L., Dec 3 2012, In : Advances in OptoElectronics. 2012, 439147.

Research output: Contribution to journalArticle

7 Citations (Scopus)
4 Citations (Scopus)

Guessing the texture of magnetic samples assisted by Aharonov-Bohm effect

Valagiannopoulos, C. A., Alù, A., Dimakis, A. & Marengo, E. A., May 31 2016, 2016 10th European Conference on Antennas and Propagation, EuCAP 2016. Institute of Electrical and Electronics Engineers Inc., 7481443

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Hiding a bump on a PEC plane by using an isotropic lossless dielectric layer

Valagiannopoulos, C. A., Tsitsas, N. L. & Sihvola, A. H., Nov 1 2014, In : IEEE Transactions on Antennas and Propagation. 62, 11, p. 5706-5714 9 p., 6895287.

Research output: Contribution to journalArticle

8 Citations (Scopus)