Research

In this section, you will find a compilation of my research projects and publications. Each piece represents a step in my ongoing journey to explore and understand our world a bit better. I am grateful for the collaborations and insights that have shaped these works, and I hope they offer a clear view of my academic pursuits and contributions.

Journal Publications

For the most up-do-date list please see my Google Scholar profile.

Z. Hayran, and F. Monticone. "Beyond the Rozanov Bound on Electromagnetic Absorption via Periodic Temporal Modulations," arXiv preprint arXiv:2305.07235 (2023). doi.org/10.48550/arXiv.2305.07235
I. Barth, M. Deckart, D. Conteduca, G. S. Arruda, Z. Hayran, S. Pasko, S. Krotkus et al. "Comprehensive evidence of lasing from a 2D material enabled by a dual-resonance metasurface," arXiv preprint arXiv:2306.11654 (2023). doi.org/10.48550/arXiv.2306.11654
Z. Hayran, J.B. Khurgin, and F. Monticone. "ℏω versus ℏk: dispersion and energy constraints on time-varying photonic materials and time crystals," Optical Materials Express, 12(10), 3904-3917 (2022). doi.org/10.1364/OME.471672
Z. Hayran, and F. Monticone. "Using Time-Varying Systems to Challenge Fundamental Limitations in Electromagnetics," IEEE Antennas and Propagation Magazine 65(4), 29-38 (2023). doi.org/10.1109/MAP.2023.3236275
Z. Hayran, A. Chen, and F. Monticone. "Spectral Causality and the Scattering of Waves," Optica 8(8), 1040-1049 (2021). doi.org/10.1364/OPTICA.423089
Z. Hayran, and F. Monticone. "Capturing Broadband Light in a Compact Bound State in the Continuum," ACS Photonics 8 (3), 813-823 (2021). https://doi.org/10.1021/acsphotonics.0c01696
(*co-first author) M. I. Abdelrahman, Z. Hayran, A. Chen, and F. Monticone. "Physical limitations on broadband invisibility based on fast-light media," Nature Communications 12, 3041 (2021). doi.org/10.1038/s41467-021-22972-w
Z. Hayran, S.A.H. Gangaraj, and F. Monticone. "Topologically protected broadband rerouting of propagating waves around complex objects," Nanophotonics, 8(8), 1371-1378 (2019). doi.org/10.1515/nanoph-2019-0075
Z. Hayran, R. Herrero, M. Botey, H. Kurt, and K. Staliunas. "All-dielectric self-cloaked structures," ACS Photonics 5(5), 2068-2073 (2018). doi.org/10.1021/acsphotonics.7b01608
Z. Hayran, R. Herrero, M. Botey, H. Kurt, and K. Staliunas. "Invisibility on demand based on a generalized Hilbert transform," Physical Review A, 98(1), 013822 (2018). doi.org/10.1103/PhysRevA.98.013822
W. W. Ahmed, R. Herrero, M. Botey, Z. Hayran, H. Kurt and K. Staliunas. "Directionality fields generated by a local Hilbert transform," Physical Review A, 97(3), 033824 (2018). doi.org/10.1103/PhysRevA.97.033824
Z. Hayran, H. Kurt, and K. Staliunas. "Rainbow trapping in a chirped three-dimensional photonic crystal," Scientific Reports, 7 (2017). doi.org/10.1038/s41598-017-03454-w
A. Ozdemir, Z. Hayran, Yuzuru Takashima, H. Kurt. "Polarization independent high transmission large numerical aperture laser beam focusing and deflection by dielectric Huygens' metasurfaces," Optics Communications, 401, 46-53 (2017). doi.org/10.1016/j.optcom.2017.05.031
M. Turduev, I. H. Giden, C. Babayigit, Z. Hayran, E. Bor, C. Boztug, H. Kurt, and K. Staliunas. "Mid-infrared T-shaped photonic crystal waveguide for optical refractive index sensing," Sensors and Actuators B: Chemical, 245, 765-773 (2017). doi.org/10.1016/j.snb.2017.02.016
M. Turduev, Z. Hayran, and H. Kurt. "Focusing of light beyond the diffraction limit by randomly distributed graded index photonic medium," Journal of Applied Physics, 121(1), 243102 (2017). doi.org/10.1063/1.4972980
N. Eti, I. H. Giden, Z. Hayran, B. Rezai, and H. Kurt. "Manipulation of photonic nanojet using liquid crystals for elliptical and circular core-shell variations," Journal of Modern Optics, 64, 1566-1577 (2017). doi.org/10.1080/09500340.2017.1300701
Y. A. Yilmaz, S. E. Tandogan, Z. Hayran, I. H. Giden, M. Turduev, H. Kurt. "Theoretical and experimental investigations of efficient light coupling with spatially varied all dielectric striped waveguides," Journal of Applied Physics, 122, 3 (2017). doi.org/10.1063/1.4994032
Z. Hayran, M. Turduev, M. Botey, R. Herrero, K. Staliunas, and H. Kurt. "Numerical and experimental demonstration of a wavelength demultiplexer design by point-defect cavity coupled to a tapered photonic crystal waveguide," Optics Letters, 41(1), 119-122 (2016). doi.org/10.1364/OL.41.000119

Conference Proceedings

Z. Hayran, and F. Monticone. "Beyond physical limitations in electromagnetism and photonics through time-Floquet systems," In SPIE (2023) (to be published).
Z. Hayran, and F. Monticone. "Dispersive Photonic Time Crystals: Causality-Induced Limitations and Opportunities," In CLEO: Fundamental Science, pp. FTh3D-5. Optica Publishing Group (2023). doi.org/10.1364/CLEO_FS.2023.FTh3D.5
Z. Hayran, J.B. Khurgin, and F. Monticone. "Scrutinizing the temporal dimension: physical constraints of photonic time crystals and time-varying metamaterials," In High Contrast Metastructures XII, p. PC124320H. SPIE (2023). doi.org/10.1117/12.2650652
Z. Hayran, and F. Monticone. "Controlling Light Propagation in Frequency Space through non-Hermitian Time Modulations," In CLEO: Science and Innovations, pp. JW4A-3. Optica Publishing Group (2022). doi.org/10.1364/CLEO_AT.2022.JW4A.3
Z. Hayran, and F. Monticone. "Controlling the Spectral Flow of Light in Non-Hermitian Photonic Time Crystals," In 2021 Fifteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials), pp. 153-155. IEEE (2021). doi.org/10.1109/Metamaterials52332.2021.9577200
Z. Hayran, and F. Monticone. "Temporally Modulated Non-Hermitian Optical Systems Based on Epsilon-Near-Zero Media," In 2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials), pp. 180-182. IEEE (2020). doi.org/10.1109/Metamaterials49557.2020.9284994
F. Monticone, and Z. Hayran. "Beyond conventional physical bounds with spacetime metamaterials," In Active Photonic Platforms XII, vol. 11461, p. 1146124. SPIE (2020). doi.org/10.1117/12.2568124
V. Mizeikis, Z. Hayran, H. Kurt, M. Turduev, D. Gailevičius, M. Malinauskas, S. Juodkazis, and K. Staliunas. "Direct laser writing of optical field concentrators based on chirped three-dimensional photonic crystals," In Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XIII, vol. 11292, pp. 18-25. SPIE (2020). doi.org/10.1117/12.2544857
K. Staliunas, W. W. Ahmed, R. Herrero, M. Botey, Z. Hayran, and H. Kurt. "Directionality fields generated by a local Hilbert transform in optics," In 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), pp. 1-1. IEEE (2019). doi.org/10.1109/CLEOE-EQEC.2019.8872900
V. Mizeikis, Z. Hayran, H. Kurt, M. Turduev, D. Gailevičius, M. Malinauskas, S. Juodkazis, and K. Staliunas. "Direct laser writing of optical field concentrators based on chirped three-dimensional photonic crystals," In CLEO: Science and Innovations, pp. SF3J-7. Optica Publishing Group (2019). doi.org/10.1364/CLEO_SI.2019.SF3J.7
Z. Hayran, R. Herrero, M. Botey, H. Kurt, and K. Staliunas. "Cloaking on Demand Based on Scattering Cancelation," In 2018 20th International Conference on Transparent Optical Networks (ICTON), pp. 1-4. IEEE (2018). doi.org/10.1109/ICTON.2018.8473947
K. Staliunas, W. W. Ahmed, R. Herrero, M. Botey, Z. Hayran, and H. Kurt. "Management of Light Patterns Based on Local Hilbert Transform," In 2018 20th International Conference on Transparent Optical Networks (ICTON), pp. 1-5. IEEE (2018). doi.org/10.1109/ICTON.2018.8473889
Z. Hayran, R. Herrero, M. Botey, H. Kurt, and K. Staliunas. "Experimental demonstration of broadband perfect invisibility cloak composed of all-dielectric materials," In Photonic and Phononic Properties of Engineered Nanostructures VIII, vol. 10541, pp. 8-15. SPIE (2018). doi.org/10.1117/12.2289443
Z. Hayran, K. Staliunas, and H. Kurt. "Light localization and filtering in three dimensional photonic structures," In 2017 19th International Conference on Transparent Optical Networks (ICTON), pp. 1-4. IEEE (2017). doi.org/10.1109/ICTON.2017.8024783
Z. Hayran, R. Herrero, M. Botey, H. Kurt, and K. Staliunas. "Polarization-independent broadband bidirectional optical cloaking using a new type of inverse scattering approach," In 2017 19th International Conference on Transparent Optical Networks (ICTON), pp. 1-4. IEEE (2017). doi.org/10.1109/ICTON.2017.8024898
Y. A. Yılmaz, Z. Hayran, F. Yıldız, T. O. KılınC, C. Karabacak, E. Bor, and H. Kurt. "Guided-mode resonance based multicolor germanium infrared photodetector," In 2017 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD), pp. 209-210. IEEE (2017). doi.org/10.1109/NUSOD.2017.8010065
T. O. Kılınc, Z. Hayran, and H. Kurt. "Wave analysis of bio-inspired eye structures for infrared detection," In 2017 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD), pp. 213-214. IEEE (2017). doi.org/10.1109/NUSOD.2017.8010067
T. O. Kılınc, Z. Hayran, and H. Kurt. "Wave study of compound eyes for efficient infrared detection," In Infrared Sensors, Devices, and Applications VII, vol. 10404, pp. 94-104. SPIE (2017). doi.org/10.1117/12.2271320
Z. Hayran, M. Turduev, D. Gailevičius, V. Mizeikis, S. Juodkazis, M. Malinauskas, K. Staliunas, and H. Kurt. "Enhanced cavity-waveguide interaction in three-dimensional photonic crystals," In Photonic and Phononic Properties of Engineered Nanostructures VII, vol. 10112, pp. 188-197. SPIE (2017). doi.org/10.1117/12.2252365
D. Gailevičius, Z. Hayran, M. Turduev, H. Kurt, S. Juodkazis, M. Malinauskas, V. Mizeikis, and K. Staliunas. "Nanostructures for highly efficient infrared detection," In Advanced Fabrication Technologies for Micro/Nano Optics and Photonics X, vol. 10115, pp. 187-195. SPIE (2017). doi.org/10.1117/12.2252048
Z. Hayran, M. Turduev, H. Kurt, and K. Staliunas. "Stopped microwave-rainbow in chirped photonic crystals," In Physics and Simulation of Optoelectronic Devices XXV, vol. 10098, pp. 271-279. SPIE (2017). doi.org/10.1117/12.2253899
D. Gailevičius, D. Sakalauskas, Z. Hayran, M. Turduev, S. Šakirzanovas, H. Kurt, V. Mizeikis, S. Juodkazis, K. Staliunas, and M. Malinauskas. "Laser nanolithography and pyrolysis of SZ2080 hybrid for slowing light in 3D photonic crystals," In Advanced Fabrication Technologies for Micro/Nano Optics and Photonics X, vol. 10115, pp. 204-211. SPIE (2017). doi.org/10.1117/12.2250537
Z. Hayran, M. Turduev, M. Botey, R. Herrero, K. Staliunas, and H. Kurt. "Slow light enabled wavelength demultiplexing," In 2016 18th International Conference on Transparent Optical Networks (ICTON), pp. 1-4. IEEE (2016). doi.org/10.1109/ICTON.2016.7550306
Z. Hayran, H. Kurt, and K. Staliunas. "Light localization in chirped woodpile photonic crystals," In 2016 18th International Conference on Transparent Optical Networks (ICTON), pp. 1-3. IEEE (2016). https://doi.org/10.1109/ICTON.2016.7550624
Z. Hayran, M. Turduev, M. Botey, R. Herrero, K. Staliunas, and H. Kurt. "Tunable wavelength-demultiplexer by tapered photonic crystal waveguide," In 2015 17th International Conference on Transparent Optical Networks (ICTON), pp. 1-4. IEEE (2015). doi.org/10.1109/ICTON.2015.7193387
Z. Hayran, M. Turduev, and H. Kurt. "Sub-wavelength light focusing with random photonic medium," In 2015 17th International Conference on Transparent Optical Networks (ICTON), pp. 1-4. IEEE (2015). doi.org/10.1109/ICTON.2015.7193326