Ing. Zdenko ZÁPRAŽNÝ, PhD.

  • 2025

Kuzmík, J., Blaho, M., Gregušová, D., Eliáš, P., Pohorelec, O., Hasenöhrl, S., Haščík, Š., Gucmann, F., Zápražný, Z., Dobročka, E., Kyambaki, M., and Konstantinidis, G.: Growth and performance of n++ GaN cap layer for HEMTs applications, Mater. Sci Semicond. Process. 185 (2025) 108959.

  • 2024

Bellucci, V., Birnsteinova, S., Sato, T., Letrun, R., Koliyadu, J.C.P., Kim, C., Giovanetti, G., Deiter, C., Samoylova, L., Petrov, I., Morillo, L.L., Graceffa, R., Adriano, L., Huelsen, H., Kollmann, H., Calliste, T.N.T., Korytar, D., Zápražný, Z., Mazzolari, A., Romagnoni, M., Asimakopoulou, E.M., Yao, Z., Zhang, Y., Ulicny, J., Meents, A., Chapman, H.N., Bean, R., Mancuso, A., Villanueva-Perez, P., and Vagovic, P.: Development of crystal optics for X-ray multi-projection imaging for synchrotron and XFEL sources, J. Synchrotron Radiation 31 (2024) 1534-1550.

Asimakopoulou, M., Bellucci, V., Birnsteinova, S., Yao, Z., Zhang, Y., Petrov, I., Deiter, C., Mazzolari, A., Romagnoni, M., Korytar, D., Zaprazny, Z., Kuglerova, Z.,  Juha, L., Lukić, B., Rack, A., Samoylova, L., Garcia-Moreno, F., Hall, S.A., Neu, T.,  Liang, X., Vagovic, P., and Villanueva-Perez, P.: Development towards high-resolution kHz-speed rotation-free volumetric imaging, Optics Express 32 (2024)  4413-4426.

  • 2021

Zápražný, Z., Zaťko, B., Korytár, D., Gál,, Jergel, M., Halahovets, Y., and Ferrari, C.: Testing of thickness homogeneity of Si crystal membranes using GaAs Timepix detector,  J. Instrument. 16 (2021) P06015.

Nádaždy, P., Hagara, J., Mikulík, P., Zápražný, Z., Korytár, D., Majková, E., Jergel, M., and Šiffalovič, P.: A high-throughput assembly of beam-shaping channel-cut monochromators for laboratory high-resolution X-ray diffraction and small-angle X-ray scattering experiments, J. Applied Crystall. 54 (2021) 730-738.

  • 2020

Ferrari, C., Beretta, S., Rotunno, E., Korytár, D., and Zápražný, Z.: Compressive strain formation in surface-damaged crystals, J. Applied Crystall. 53 (2020) 629-634.

Zaťko, B., Šagátová, A., Zápražný, Z., Boháček, P., Sekáčová, M., Kováčová, E., Žemlička, J., Jakůbek, J., Korytár, D., Gál, N., and Nečas, V.: Study of the contrast resolution of Timepix detector with a semi-insulating GaAs sensor, J. Instrument. 15 (2020) C04004.

  • 2019

Zápražný, Z., Korytár, D., Jergel, M., Halahovets, Y., Maťko, I., Šiffalovič, P., Kečkéš, J., Mikulík, P., Majková, E., and Thi, T.N.T.: Study of surface quality and subsurface damage of germanium optics produced by single point diamond nanomachining, Proc. SPIE 11032 (2019) 11032E.

Nádaždy, P., Hagara, J., Jergel, M., Majková, E., Mikulík, P., Zápražný, Z., Korytár, D., and Šiffalovič, P.: Exploiting the potential of beam-compressing channel-cut monochromators for laboratory high-resolution small-angle X-ray scattering experiments, J. Applied Crystall. 52 (2019) 498-506.

Zápražný, Z., Korytár, D., Jergel, M., Halahovets, Y., Kotlár, M., Maťko, I., Hagara, J., Šiffalovič, P., Keckes, J., and Majková, E.: Characterization of the chips generated by the nanomachining of germanium for X-ray crystal optics, Inter. J. Adv. Manufactur. Technol. 102 (2019) 2757-2767.

Kubanda, D., Zaťko, B., Šagátová, A., Žemlička, J., Zápražný, Z., Boháček, P., Dudák, J., Kováčová, E., and Nečas, V.: Performance of bulk semi-insulating GaAs-based sensor and its comparison to Si-based sensor for Timepix radiation camera, J. Instrument. 14 (2019) C01023.

  • 2018

Zaťko, B., Hrubčín, L., Šagátová, A., Osvald, J., Boháček, P., Zápražný, Z., Sedlačková, K., Sekáčová, M., Dubecký, F., Skuratov, V.A., Korytár, D., and Nečas, V.: Schottky barrier detectors based on high quality 4H-SIC semiconductor: electrical and detection properties, Applied Surface Sci 461 (2018) 276-280.

Šagátová, A., Zaťko, B., Nečas, V., Dubecký, F., Tu, L.A., Sedlačková, K., Boháček, P., and Zápražný, Z.: From single GaAs detector to sensor for radiation imaging camera, Applied Surface Sci 461 (2018) 3-9.

Jergel, M., Halahovets, Yu., Maťko, I., Korytár, D., Zápražný, Z., Hagara, J., Nádaždy, P.,  Šiffalovič, P., Kečkéš, J., and Majková, E.: Finishing of Ge nanomachined surfaces for X-ray crystal optics, Inter. J. Advanced Manufact. Technol. 96 (2018) 3603–3617.

Korytár, D., Zápražný, Z., Ferrari, C., Frigeri, C., Jergel, M., Maťko, I., and Kečkeš, M.: Cross-sectional TEM study of subsurface damage in SPDT machining of germanium optics, Applied Optics 57 (2018) 1940-1943.

Zaťko, B., Zápražný, Z., Jakůbek, J., Šagátová, A., Boháček, P., Sekáčová, M Korytár, D., Nečas, V., Žemlička, J., Mora, Y., and Pichotka, M.: Imaging performance of Timepix detector based on semi-insulating GaAs, J. Instrument. 13 (2018) C01034.

Zaťko, B., Kubanda, D., Žemlička, J., Šagátová, A., Zápražný, Z., Boháček, P., Nečas, V., Mora, Y., Pichotka, M., and Dudák, J.: First tests of Timepix detectors based on semi-insulating GaAs matrix of different pixel size, J. Instrument. 13 (2018) C02013.

Zápražný, Z., Korytár, D., Jergel, M., Halahovets, Yu., Ferrari, C., Frigeri, C., Dobročka, E., Keckes, J., and Hagara, J.:  Towards x-ray crystal channel-cut monochromators prepared by nano-machining technique, Mater. Struct. 25 (2018) 75-78.

Zápražný, Z., Korytár, D., Jergel, M., Halahovets, Y., Kotlár, M., Maťko, I., Hagara, J., Šiffalovič, P., Keckes, J., and Majková, E.: Study of chips originating from nanomachining of monocrystalline germanium for X ray optics. In: 10th Inter. Conf. Solid State Surfaces Interfaces Conf. – SSSI 2018. Extended Abstract Book. Eds. R. Brunner et al. Bratislava: Comenius Univ., 2018, pp. 85-86. ISBN 978-80-223-4606-1.

Jergel, M., Halahovets, Y., Maťko, I., Šiffalovič, P., Majková, E., Korytár, D., and Zápražný, Z.: Surface finishing of X-ray crystals optics after nanomachining. In: 10th Inter. Conf. Solid State Surfaces Interfaces Conf. – SSSI 2018. Extended Abstract Book. Eds. R. Brunner et al. Bratislava: Comenius Univ., 2018, pp. 30-33. ISBN 978-80-223-4606-1.

Korytár, D., Zápražný, Z., Jergel, M., Ferrari, C., Halahovets, Y., and Dobrovodský, J.: Surface quality, subsurface damage and mechanisms of material removal in nanomachining of brittle materials. In: 10th Inter. Conf. Solid State Surfaces Interfaces Conf. – SSSI 2018. Extended Abstract Book. Eds. R. Brunner et al. Bratislava: Comenius Univ., 2018, pp. 43-46. ISBN 978-80-223-4606-1.

  • 2017

Zápražný, Z., Korytár, D., Halahovets, Yu., Jergel, M., Ferrari, C., Hagara, J., and Dobročka, E.:  Diffraction surfaces in x-ray crystal monochromators prepared by nano-machining technique, Mater. Struct. 24 (2017) 25-26.

  • 2016

Šiffalovič, P., Végsö, K., Hodas, M., Jergel, M., Halahovets, Y., Pelletta, M., Korytár, D., Zápražný, Z., Majková, E., : In situ x-ray reciprocal space mapping for characterization of nanomaterials In: X-ray and neutron techniques for nanomaterials characterization. Ed. C. S.S.R. Kumar. Berlin, Springer 2016. ISBN 978-3-662-48604-7. P. 507-544.

Drga, J., Korytár, D., Zápražný, Z., Jergel, M., Halahovets, Y., : Influence of tool rake angle used for nanomachining of germanium In: Transfer 2016 – 17th Inter. Sci Conf. Trenčín: TU A. Dubčeka, 2016. ISBN 978-80-8075-756-4.

Zápražný, Z., Korytár, D., Jergel, M., Šiffalovič, P., Halahovets, Y., Keckes, J., Maťko, I., Ferrari, C., Vagovič, P., Mikloška, M., : Nano-machining for advanced x-ray crystal optics. AIP Conf. Proc. 1764 (2016) 020005.

Hrivňak, S., Uličný, J., Mikeš, L., Cecilia, A., Hamann, E., Baumbach, T., Švéda, L., Zápražný, Z., Korytár, D., Gimenez, E., Wagner, U., Rau, C., Greven, H., Vagovič, P., : Single-distance phase retrieval algorithm for Bragg Magnifier microscope. Optics Express 24 (2016) 27753-27762.

Végsö, K., Jergel, M., Šiffalovič, P., Majková, E., Korytár, D., Zápražný, Z., Mikulík, P., Vagovič, P., :Towards high-flux X-ray beam compressing channel-cut monochromators. J. Applied Crystall. 49 (2016) 1885-1892.

  • 2015

Zápražný, Z., Korytár, D., Jergel, M., Šiffalovič, P., Dobročka, E., Vagovič, P., Ferrari, C., Mikulík, P., Demydenko, M., Mikloška, M., : Calculations and surface quality measurements of high-asymmetry angle x-ray crystal monochromators for advanced x-ray imaging and metrological applications. Optical Engn. 54 (2015) 035101.

Zápražný, Z., Korytár, D., Jergel, M., Šiffalovič, P., Halahovets, Y., Mikloška, M., : Nano-machining for x-ray crystal optics In: Proc. ADEPT. 3st Inter. Conf. on Advan. in Electronic and Photonic Technol. Eds. D. Pudis et al. Žilina: Univ. Žilina 2015. ISBN 978-80-554-1033-3. P. 243-246.

Korytár, D., Halahovets, Y., Jergel, M., Zápražný, Z., : Nanomachining of hard X-ray crystal optics,. DGaO Proc. 2015.

Hodas, M., Šiffalovič, P., Pelletta, M., Halahovets, Y., Jergel, M., Majková, E., Korytár, D., Zápražný, Z., Vagovič, P., : Passivation of ge crystals by B4C thin layer deposition In: Proc. 21th Inter. Conf. on Applied Phys. of Cond. Matter (APCOM 2015). Eds. J. Vajda and I. Jamnický. Bratislava: FEI STU 2015. ISBN 978-80-227-4373-0. P. 180-183.

  • 2014

Wachulak, P., Wegrzynski, L., Zápražný, Z., Bartnik, A., Fok, T., Jarocki, R., Kostecki, J., Szczurek, M., Korytár, D., Fiedorowicz, H., : Extreme ultraviolet tomography of multi-jet gas puff target for high-order harmonic generation. Applied Phys. B 117 (2014) 253-263.

Wachulak, P., Wegrzynski, L., Zápražný, Z., Bartnik, A., Fok, T., Jarocki, R., Kostecki, J., Szczurek, M., Korytár, D., Fiedorowicz, H., : Extreme ultraviolet tomography using a compact laser–plasma source for 3D reconstruction of low density objects. Optics Lett. 39 (2014) 532-535.

Zápražný, Z., Korytár, D., Šiffalovič, P., Jergel, M., Demydenko, M., Mikulík, P., Dobročka, E., Ferrari, C., Vagovič, P., Mikloška, M., : Simulations and surface quality testing of high asymetry angle x-ray crystal monochromators for advanced x-ray imaging applications. Proc. SPIE 9207 (2014) 92070Y.

Vagovič, P., Švéda, L., Cecilia, A., Hammann, E., Pelliccia, D., Gimenez, E., Korytár, D., Pavlov, K.,Zápražný, Z., Zuber, M., Koenig, T., Olbinado, M., Yashiro, W., Momose, A., Fiederle, M., Baumbach, T., :X-ray Bragg magnifier microscope as a linear shift invariant imaging system: image formation and phase retrieval,. Optics Express 22 (2014) 21508-21520.

Zápražný, Z., Korytár, D., Šiffalovič, P., Jergel, M., : X-ray crystal optics for analyser based imaging. In: Proc. 20th Inter. Conf. on Applied Phys. of Cond. Matter (APCOM 2014). Eds. J. Vajda and I. Jamnický. Bratislava: FEI STU 2014. P. 198-201.

  • 2013

Jergel, M., Šiffalovič, P., Végsö, K., Majková, E., Korytár, D., Zápražný, Z., Perlich, J., Ziberi, B., Cornejo, M., Vagovič, P., : Extreme x-ray beam compression for a high-resolution table-top grazing-incidence small-angle x-ray scattering setup. J. Applied Crystall. 46 (2013) 1544-1550.

Vagovič, P., Korytár, D., Cecilia, A., Hamann, E., Švéda, L., Pelliccia, D., Härtwig, J., Zápražný, Z., Oberta, P., Dolbnya, I., Shawney, K., Fleschig, U., Fiederle, M., Baumbach, T., : High-resolution high-efficiency X-ray imaging system based on the in-line Bragg magnifier and the Medipix detector. J. Synchrotron Radiation 20 (2013) 153-159.

Korytár, D., Vagovič, P., Végsö, K., Šiffalovič, P., Dobročka, E., Jark, W., Áč, V., Zápražný, Z., Ferrari, C., Cecilia, A., Hamann, E., Mikulík, P., Baumbach, T., Fiederle, M., Jergel, M., : Potential use of V-channel Ge(220) monochromators in X-ray metrology and imaging. J. Applied Crystall. 46 (2013) 945-952.

Korytár, D., Vagovič, P., Ferrari, C., Šiffalovič, P., Jergel, M., Dobročka, E., Zápražný, Z., Áč, V., Mikulík, P., : Process-induced inhomogeneities in higher asymmetry angle x-ray monochromators. Proc. SPIE 8848 (2013) 8848-28.

Zápražný, Z., Korytár, D., Mikulík, P., Áč, V., : Processing of projections containing phase contrast in laboratory micro-computerized tomography imaging. J. Applied Crystall. 46 (2013) 933-938.

  • 2012

Zápražný, Z., Korytár, D., Áč, V., Konopka, P., Bielecki, J., : Phase contrast imaging of lightweight objects using microfocus X-ray source and high resolution CCD camera. J. Instrum. 7 (2012) C03005.

  • 2011

Zápražný, Z., Korytár, D., Áč, V., Konopka, P., Bielecki, J., : Computerized tomography using high resolution X-ray imaging system with a microfocus source. In: APCOM 2011. Eds. D. Pudiš et al. Žilina: FEE TU, 2011. ISBN: 978-80-554-0386-1. P. 208-211.

Áč, V., Kasala, J., Korytár, D., Zápražný, Z., Konopka, P., : Practical experiences with X-ray micro tomography of aluminium alloys. In: APCOM 2011. Eds. D. Pudiš et al. Žilina: FEE TU, 2011. ISBN: 978-80-554-0386-1. P. 204-207.

  • 2010

Korytár, D., Ferrari, C., Mikulík, P., Vagovič, P., Dobročka, E., Áč, V., Konopka, P., Erko, A., Abrosimov, N.,Zápražný, Z., : 1D X‐ray Beam Compressing Monochromators. AIP Conf. Proc. 1221 (2010) 59-62.

Zápražný, Z., Korytár, D., Dubecký, F., Áč, V., Stachura, Z., Lekki, J., Bielecki, J., Mudroň, J., : Experience with imaging by using of microfocus x-ray source, J. Electrical Engn. 61 (2010) 287-290.

Zápražný, Z., Korytár, D., Dubecký, F., Áč, V., Lekki, J., Stachura, Z., Bielecki, J., Mudroň, J., : First experience with imaging using microfocus x-ray source. In: APCOM 2010. Eds. J. Vajda and M. Weis. Bratislava: FEI STU, 2010. ISBN: 978-80-227-3307-6. P. 240-243.

Áč, V., Korytár, D., Zápražný, Z., Dobročka, E., : Thermally tuned x-ray V-shaped monochromator – simulations and experimental results. In: APCOM 2010. Eds. J. Vajda and M. Weis. Bratislava: FEI STU, 2010. ISBN: 978-80-227-3307-6. P. 93-96.