Research

Projects       Publications       Patents

Projects

• Analysis and synthesis of arbitrary-shaped conformal antenna arrays
• High-resolution probe for closed-loop deep brain stimulation
• Antennas for implantable bioelectronics

Publications

2021

• G. Sacco, D. Nikolayev, R. Sauleau, M. Zhadobov, “Antenna / human body coupling in 5G millimeter-wave bands: Do age and clothing matter?” IEEE Journal of  Microwaves, accepted

• M. Gao, D. Nikolayev, M. Bosiljevac, Z. Šipuš, A. K. Skrivervik, “Rules of thumb to assess losses of implanted antennas,” in Proc. 15^th Eur. Conf. Antennas and Propagation (EuCAP 2021), Düsseldorf, Germany, 2021.
• J. Goethals, D. Nikolayev, A. Thielens, G. Vermeeren, L. Verloock, M. Deruyck, L. Martens, and W. Joseph, “Design and verification of an on-body antenna in the harsh environment of a horse hoof,” in Proc. 15^th Eur. Conf. Antennas and Propagation (EuCAP 2021), Düsseldorf, Germany, 2021.

2020

• S. Benaissa, L. Verloock, D. Nikolayev, M. Deruyck, G. Vermeeren, L. Martens, J. Govaere, F. Tuyttens, B. Sonck, D. Plets, and W. Joseph, “Propagation-loss characterization for livestock implantables at 433, 868, and 1400 MHz,” IEEE Trans. Antennas Propag., accepted
• Xi Tian, Q. Zeng, D. Nikolayev, and J. S. Ho, “Conformal propagation and near-omnidirectional radiation with surface plasmonic clothing,” IEEE Trans. Antennas Propag., vol. 68, no. 11, pp. 7309–7319, Nov. 2020.

• D. Nikolayev, W. Joseph, M. Zhadobov, L. Martens, R. Sauleau, and A. Skrivervik, “Application of fundamental in-body radiation limitations to practical design of antennas for implantable bioelectronics,” in Proc. IEEE Int. Microwave Biomedical Conf. (IMBioC 2020), Toulouse, France, 2020.
• D. Nikolayev, A. Skrivervik, W. Joseph, L. Martens, R. Sauleau, and M. Zhadobov, “Minimizing electromagnetic exposure for wireless mm-size neural implants,” in Proc. BioEM 2020, Oxford, UK, 2020.
• D. Nikolayev, Z. Sipus, M. Bosiljevac, W. Joseph, M. Zhadobov, R. Sauleau, L. Martens, and A. Skrivervik, “Optimal frequency of operation and radiation efficiency limitations of implantable antennas,” in Proc. 14^th Eur. Conf. Antennas and Propagation (EuCAP 2020), Copenhagen, Denmark, 2020.
• D. Nikolayev, A. Mazzinghi, and A. Skrivervik, “Rapid analysis of arbitrary-shaped conformal beam-scanning arrays,” in Proc. 14^th Eur. Conf. Antennas and Propagation (EuCAP 2020), Copenhagen, Denmark, 2020.
• S. Benaissa, L. Verloock, D. Nikolayev, M. Deruyck, G. Vermeeren, L. Martens, F.A.M. Tuyttens, B. Sonck, D. Plets, and W. Joseph, “Joint antenna-channel modelling for in-to-out-body propagation of dairy cows at 868 MHz,” in Proc. 14^th Eur. Conf. Antennas and Propagation (EuCAP 2020), Copenhagen, Denmark, 2020.
• J. Goethals, G. Vermeeren, D. Nikolayev, M. Deruyck, L. Martens, and W. Joseph, “Combined antenna-channel characterization for wireless communication from horse hoof to base station,” in Proc. 14^th Eur. Conf. Antennas and Propagation (EuCAP 2020), Copenhagen, Denmark, 2020.
• Z. Sipus, M. Bosiljevac, D. Nikolayev, and A. Skrivervik, “Design concerns for in-body antennas based on frequency analysis of fundamental radiation limitations,” in Proc. 14^th Eur. Conf. Antennas and Propagation (EuCAP 2020), Copenhagen, Denmark, 2020.

2019

• D. Nikolayev, W. Joseph, A. K. Skrivervik, M. Zhadobov, L. Martens, and R. Sauleau, “Dielectric-loaded conformal microstrip antennas for versatile in-body applications,” IEEE Antenn. Wireless Propag. Lett., vol. 18, no. 12, pp. 2686–2690, Dec. 2019.
• R. Orlacchio, M. Zhadobov, S. Alekseev, D. Nikolayev, R. Sauleau, Y. Le Page, and Y. Le Dréan, “Millimeter-wave heating in in vitro studies: Effect of convection in continuous and pulse-modulated regimes,” Bioelectromagnetics, vol. 40, no. 8, pp. 553–568, Dec. 2019.
• D. Nikolayev, W. Joseph, E. Tanghe, M. Welkenhuysen, C. Lopez, T. Tarnaud, and L. Martens, “Low-profile 3D microelectrodes with near-uniform current density for high-resolution neural stimulation,” Brain Stimul., vol. 12, no. 4, pp. e155–e157, Jul. 2019.
• D. Nikolayev, M. Zhadobov, and R. Sauleau, “Immune-to-detuning wireless in-body platform for versatile biotelemetry applications,” IEEE Trans. Biomed. Circuits Syst. vol. 13, no. 2, Apr. 2019.
• D. Nikolayev, W. Joseph, M. Zhadobov, R. Sauleau, and L. Martens, “Optimal radiation of body-implanted capsules,” Phys. Rev. Lett., vol. 122, no. 10, p. 108101, Mar. 2019.
• D. Nikolayev, E. Tanghe, W. Joseph, T. Tarnaud, C. Lopez, M. Welkenhuysen, and L. Martens, “Uniform current density electrodes for a high-resolution deep-brain-stimulation lead,” Brain Stimul., vol 12, no. 2, pp. e12–e13, Mar. 2019.
• S. Benaissa, D. Plets, D. Nikolayev, M. Deruyck, L. Verloock, G. Vermeeren, L. Martens, E. De Poorter, F. Tuyttens, B. Sonck and W. Joseph, “Experimental characterization of in-to-out-body path loss at 433 MHz in dairy cows,” Electron. Lett., vol. 55, no. 7, Jan 2019.

• D. Nikolayev, W. Joseph, R. Sauleau, M. Zhadobov, L. Martens, and A. K. Skrivervik, “Influence of body-implanted capsule dimensions and materials on achievable radiation efficiency,” in Proc. Asia-Pacific Microwave Conference (APMC 2019), Singapore, 2019. 
• D. Nikolayev, M. Zhadobov, W. Joseph, L. Martens, and R. Sauleau, “Radiation performance of highly miniaturized implantable devices,” in Proc. Eur. Microwave Week (EuMW 2019), Paris, France, 2019.
• D. Nikolayev, W. Joseph, M. Zhadobov, R. Sauleau, L. Martens, and A. Skrivervik, “Exposure assessment of body-implanted capsules in the 100-MHz–5-GHz range,” in Proc. BioEM 2019, Montpellier, France, 2019.
• R. Orlacchio, M. Zhadobov, S. Alekseev, D. Nikolayev, R. Sauleau, Y. Le Page, D. Habauzit, and Y. Le Dréan, “Thermal convection in in vitro samples exposed to millimeter waves in continuous and pulse-modulated regimes,” in Proc. BioEM 2019, Montpellier, France, 2019.
• D. Nikolayev, W. Joseph, M. Zhadobov, R. Sauleau, and L. Martens “Ensuring robust and tissue-independent operation of implantable, ingestible, and injectable antennas,” in Proc. 13^th Int. Symp. On Medical Information and Communication Technology (ISMICT 2019), Oslo, Norway, 2019.

2018

• D. Nikolayev, M. Zhadobov, and R. Sauleau, “Impact of tissue electromagnetic properties on radiation performance of in-body antennas,” IEEE Antenn. Wireless Propag. Lett., vol. 17, no. 8, pp. 1440–1444, Aug. 2018.
• D. Nikolayev, M. Zhadobov, P. Karban, and R. Sauleau, “Electromagnetic radiation efficiency of body-implanted devices,” Phys. Rev. Applied, vol. 9, no. 2, p. 024033, Feb. 2018. — Editor’s Suggestion and Featured in “Physics”

• D. Nikolayev, “Radiation efficiency and safety considerations of body-implanted devices for biotelemetry and neural interfaces,” in Workshop on Emerging Electromagnetic and RF Systems for Health Monitoring and Therapy, Stanford, CA, 2018.
• D. Nikolayev, M. Welkenhuysen, N. Gunster, W. Joseph, E. Tanghe, C. M. Lopez, L. Martens, “Design and characterization of TiN electrodes for a planar high-resolution DBS probe,” in Proc. Cell-NERF Symp.: Neurotechnologies, Leuven, Belgium, 2018.
• D. Nikolayev, E. Tanghe, W. Joseph, T. Tarnaud, C. M. Lopez, M. Welkenhuysen, L. Martens, “Uniform current density electrodes for a high-resolution deep-brain-stimulation lead,” in Proc. Joint Meeting 2018 NYC Neuromodulation Conf. and NANS Summer Series, New York, NY, 2018.
• D. Nikolayev, “Modeling and characterization of in-body antennas,” in Proc. 17^th Int. Conf. Mathematical Methods in Electromagnetic Theory (MMET 2018), Kyiv, Ukraine, 2018, pp. 42–46. — Invited Talk

2017

• D. Nikolayev, M. Zhadobov, P. Karban, and R. Sauleau, “Conformal antennas for miniature in-body devices: The quest to improve radiation performance,” URSI Rad. Sci. Bull., vol. 2017, no. 363, pp. 52–64, Dec. 2017. — Invited and Featured on Journal Cover
• D. Nikolayev, M. Zhadobov, L. Le Coq, P. Karban, and R. Sauleau, “Robust ultra-miniature capsule antenna for ingestible and implantable applications,” IEEE Trans. Antennas Propag., vol. 65, no. 11, pp. 6107-6119, Nov. 2017.

• D. Nikolayev, M. Zhadobov, P. Karban, and R. Sauleau, “Long-range antenna systems for in-body biotelemetry: design methodology and characterization approach,” in Proc. EMBEC’17 & NBC’17 Joint Conf., Tampere, Finland, 2017, pp. 233–236. — Young Investigator Award
• D. Nikolayev, M. Zhadobov, P. Karban, and R. Sauleau, “434 MHz ISM band antenna for in-body biotelemetry capsules,” in Proc. 11^th Eur. Conf. Antennas and Propagation (EuCAP 2017), Paris, France, 2017, pp. 1035–1038.
• D. Nikolayev, P. Karban, M. Zhadobov, and R. Sauleau, “Antenne in-body pour capsules biotélémétriques miniatures : augmentation de la robustesse et de l’efficacité de rayonnement,” in Les Journées Scientifiques de l’URSI-France « Radiosciences au service de l’humanité »,” Sophia Antipolis, France, 2017, pp. 37–44. — Best paper presented by a PhD student award
• D. Nikolayev, M. Zhadobov, P. Karban, and R. Sauleau, “Antenne miniature à 434 MHz pour dispositifs biotélémétriques in-body,” in Proc. 20^èmes Journées Nationales Micro-ondes (JNM 2017), Saint-Malo, France, 2017, pp. 1–4.

Pre-2017

• D. Nikolayev, Z. Kubik, P. Karban, and J. Skala, “Impedance analysis of transmission line cells for EMC applications using Agros2D,” Appl. Math. Comput., vol. 289, pp. 381–387, Oct. 2016.
• Z. Kubik, D. Nikolayev, P. Karban, J. Skala, and M. Hromadka, “Optimization of electrical properties of parallel plate antenna for EMC testing,” J. Comput. Appl. Math., vol. 270, pp. 283–293, Nov. 2014.
• D. Nikolayev, “An anatomically realistic boundary representation phantom for studying VHF–UHF radiation effects,” Comput. Probl. Electr. Eng., vol. 3, no. 2, pp. 77–82, 2013.
• D. Nikolayev, “Radio frequency resonances inside a human head,” Comput. Probl. Electr. Eng., vol. 3, no. 1, pp. 73–78, 2013.
• V. Hoblyk, V. Pavlysh, and D. Nikolayev, “Prediction of zones with information leakage hazard in screened server rooms,” NULP Automat. Meas. and Control Bull., vol. 741, pp. 134–139, 2013 [In Russian].

• D. Nikolayev, M. Zhadobov, P. Karban, and R. Sauleau, “Increasing the radiation efficiency and matching stability of in-body capsule antennas,” in Proc. 10^th Eur. Conf. on Antennas and Propagation (EuCAP 2016), Davos, Switzerland, 2016, pp. 1–5.
• D. Nikolayev, M. Zhadobov, R. Sauleau, P.-A. Chapon, E. Blond, and P. Karban, “Decreasing SAR and enhancing transmission of an in-body biotelemetry capsule by reducing the near-field coupling with surrounding tissues,” in Proc. BioEM 2015, Monterey, CA, 2015, pp. 465–468. — Poster and paper award
• C. Leduc, M. Zhadobov, D. Nikolayev, and R. Sauleau, “Analytical thermal model of a human skin-equivalent phantom for dosimetric assessment in the 60-GHz band” in Proc. BioEM 2015, Monterey, CA, 2015, pp. 541–544.
• Z. Kubik, J. Skala, and D. Nikolayev, “3D FEM simulation of small stripline for EMC testing,” in Proc. Int. Conf. on Applied Electronics (AE 2014), Pilsen, Czechia, 2014, pp. 161–164.
• D. Nikolayev, “SAR variation in a human head due to intrinsic resonances,” in Proc. 4^th Eur. Seminar on Computing (ESCO 2014), Pilsen, Czechia, 2014, p. 162.
• D. Nikolayev, Z. Kubik, P. Karban, and J. Skala, “Modelling and simulation of an unshielded stripline,” in Proc. 4^th Eur. Seminar on Computing (ESCO 2014), Pilsen, Czechia, 2014, p. 163.
• J. Kacerovsky, F. Mach, D. Nikolayev, P. Karban, and I. Dolezel, “Estimation of charges and critical velocity of plastic particles in triboelectric separator,” in Proc. 10th Int. Conf. ELEKTRO 2014, Rajecke Teplice, Slovak Republic, 2014, pp. 575–579.
• Z. Kubik, D. Nikolayev, M. Hromadka, P. Karban, and J. Skala, “Optimization of electrical properties of parallel plate antenna for EMC testing,” in Proc. 4^th Int. Congr. on Computational Engineering and Sciences, Las Vegas, NV, 2013, p. 81.
• D. Nikolayev, V. Hoblyk, “Simulation and analysis of mobile phone field in crowded environments,” in Proc. 10^th Int. Conf. CADSM 2009, Lviv-Polyana, Ukraine, 2009, p. 118.

Book Chapter

• D. Nikolayev, M. Zhadobov, R. Sauleau, and P. Karban, “Antennas for ingestible capsule telemetry,” in Advances in Body-Centric Wireless Communication: Applications and State-of-the-Art, London: IET, 2016.

Patents

• “Low-profile electrode with balanced current density distribution,” pending
• “Biotelemetry device that can be ingested and implanted in vivo,” WO2019069008A1, 2019.
• “Antenne radioelectrique robuste en impedance et a bas profil,” WO2019069024A1, 2019.
• “Low profile multi-band radio antenna,” WO2019069026A1, 2019.