Find Research Outputs

Search in all content

Filters for Research Output

Search concepts
Selected filters

Publication Year

  • 2020
  • 2019
  • 2018
  • 2017
  • 2016
  • 2015
  • 2014
  • 2013
  • 2012
  • 2011

Author

  • Constantinos Valagiannopoulos
2014

Symmetric absorbers realized as gratings of PEC cylinders covered by ordinary dielectrics

Valagiannopoulos, C. A. & Tretyakov, S. A., Oct 1 2014, In : IEEE Transactions on Antennas and Propagation. 62, 10, p. 5089-5098 10 p., 2340891.

Research output: Contribution to journalArticle

15 Citations (Scopus)
2015

The Role of Reactive Energy in the Radiation by a Dipole Antenna

Valagiannopoulos, C. A. & Alu, A., Aug 1 2015, In : IEEE Transactions on Antennas and Propagation. 63, 8, p. 3736-3741 6 p., 7111231.

Research output: Contribution to journalArticle

6 Citations (Scopus)
2012

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)
2 Citations (Scopus)
2014

On the minimal scattering response of PEC cylinders in a dielectric cloak

Valagiannopoulos, C. A., Alitalo, P. & Tretyakov, S. A., Mar 27 2014, In : IEEE Antennas and Wireless Propagation Letters. 13, p. 403-406 4 p., 6746011.

Research output: Contribution to journalArticle

11 Citations (Scopus)
2013

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)
2016

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

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)
2018

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

2016

Radiation-enhancing reflector

Valagiannopoulos, C. A. & Tretyakov, S. A., May 31 2016, 2016 10th European Conference on Antennas and Propagation, EuCAP 2016. Institute of Electrical and Electronics Engineers Inc., 7481933

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

2013

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

Optimal directional pattern design utilizing arbitrary microphone arrays: A continuous-wave approach

Delikaris-Manias, S., Valagiannopoulos, C. A. & Pulkki, V., Sep 9 2013, 134th Audio Engineering Society Convention 2013. p. 1-10 10 p. (134th Audio Engineering Society Convention 2013).

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

8 Citations (Scopus)
2015

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

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

2012
7 Citations (Scopus)

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)
2019

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)
2020

New Self-Organization Route to Tunable Narrowband Optical Filters and Polarizers Demonstrated with ZnO–ZnWO4 Eutectic Composite

Osewski, P., Belardini, A., Centini, M., Valagiannopoulos, C., Leahu, G., Li Voti, R., Tomczyk, M., Alù, A., Pawlak, D. A. & Sibilia, C., Jan 1 2020, (Accepted/In press) In : Advanced Optical Materials. 8, 7, 1901617.

Research output: Contribution to journalArticle

2013

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

On enhancing the field in the vicinity of a metamaterial wedge with use of an auxiliary dielectric tip

Valagiannopoulos, C. A. & Sihvola, A., Aug 14 2013, 2013 7th European Conference on Antennas and Propagation, EuCAP 2013. p. 3452-3456 5 p. 6546951. (2013 7th European Conference on Antennas and Propagation, EuCAP 2013).

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

2018

On self-oscillating wireless power transfer

Tretyakov, S., Valagiannopoulos, C., Ra'Di, Y. & Simovski, C., Jan 2 2018, 2017 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems, COMCAS 2017. Institute of Electrical and Electronics Engineers Inc., Vol. 2017-November. p. 1-3 3 p. (2017 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems, COMCAS 2017; vol. 2017-November).

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

2013
9 Citations (Scopus)
2015

Perfect magnetic mirror and simple perfect absorber in the visible spectrum

Valagiannopoulos, C. A., Tukiainen, A., Aho, T., Niemi, T., Guina, M., Tretyakov, S. A. & Simovski, C. R., Mar 11 2015, In : Physical Review B - Condensed Matter and Materials Physics. 91, 11, 115305.

Research output: Contribution to journalArticle

35 Citations (Scopus)
2016

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)
2019
Open Access
1 Citation (Scopus)

Metasurface-enabled interference mitigation in visible light communication architectures

Valagiannopoulos, C., Tsiftsis, T. A. & Kovanis, V., Oct 23 2019, In : Journal of Optics (United Kingdom). 21, 11, 115702.

Research output: Contribution to journalArticle

Robust polarization twist by pairs of multilayers with tilted optical axes

Sarsen, A. & Valagiannopoulos, C., Mar 6 2019, In : Physical Review B. 99, 11, 115304.

Research output: Contribution to journalArticle

4 Citations (Scopus)
2012
20 Citations (Scopus)
2011
23 Citations (Scopus)
2013

Total absorption in asymmetric hyperbolic media

Nefedov, I. S., Valagiannopoulos, C. A., Hashemi, S. M. & Nefedov, E. I., Sep 23 2013, In : Scientific Reports. 3, 2662.

Research output: Contribution to journalArticle

51 Citations (Scopus)

Low-pass features of optical nano-filters constituted by simple layered structures

Valagiannopoulos, C. A. & Sihvola, A., Sep 1 2013, In : Microwave and Optical Technology Letters. 55, 9, p. 2099-2106 8 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)
2012
3 Citations (Scopus)
2014

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)
2016

Theoretical concepts of unlimited-power reflectors, absorbers, and emitters with conjugately matched layers

Valagiannopoulos, C. A. & Tretyakov, S. A., Sep 12 2016, In : Physical Review B. 94, 12, 125117.

Research output: Contribution to journalArticle

7 Citations (Scopus)
2018

Lateral radiative forces exerted by evanescent fields along a hyperbolic metamaterial slab

Nefedov, I. S., Valagiannopoulos, C. A. & Shalin, A. S., Jan 1 2018, In : Journal of Physics: Conference Series. 1092, 012096.

Research output: Contribution to journalConference article

2019

Maximal quantum scattering by homogeneous spherical inclusions

Valagiannopoulos, C., Jul 18 2019, In : Physical Review B. 100, 3, 035308.

Research output: Contribution to journalArticle

4 Citations (Scopus)
2020
Open Access
1 Citation (Scopus)
2013
4 Citations (Scopus)
2015

PT-symmetric metamaterial systems for aberration-free imaging and wave manipulation

Monticone, F., Valagiannopoulos, C., Savoia, S., Fleury, R. & Alu, A., 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. 223-225 3 p. 7342581

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

2016

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

2018

Nonlinear waves in hyperbolic metamaterials: Focus on solitons and rogues

Boardman, A. D., Grimalsky, V. V., Guo, T., Kibler, B., McNiff, J., Nefedov, I., Rapoport, Y., Argyropoulos, C. & Valagiannopoulos, C., Jan 1 2018, Metamaterials XI. Zayats, A. V., Boardman, A. D. & MacDonald, K. F. (eds.). SPIE, Vol. 10671. 106710L. (Proceedings of SPIE - The International Society for Optical Engineering; vol. 10671).

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

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

2011

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)

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)
2019

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

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

2011
6 Citations (Scopus)
2012

The influence of refractive index, excitation and observation on PEC/PMC boundary realization

Valagiannopoulos, C. A. & Sihvola, A. H., Dec 10 2012, 2012 IEEE International Symposiumon Antennas and Propagation, APSURSI 2012 - Proceedings. 6348494. (IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)).

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

1 Citation (Scopus)
2015

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)
2016

Optical PT-Symmetric Counterparts of Ordinary Metals

Valagiannopoulos, C. A., Sep 1 2016, In : IEEE Journal on Selected Topics in Quantum Electronics. 22, 5, 7366541.

Research output: Contribution to journalArticle

7 Citations (Scopus)