Research

Publications Patents

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, vol. 1, no. 2, pp. 593–600, Apr. 2021.

G. Gaugain, L. Quéguiner, M. Zhadobov, R. Sauleau, J. Modolo, and D. Nikolayev, “Modeling accuracy of transcranial current stimulation: Static and quasi-static approximations errors,” in Proc. BioEM 2021, Ghent, Belgium, 2021.
I. Soares, R. Sauleau, and D. Nikolayev, “Theoretical analysis of electromagnetic exposure to wireless charging systems for deep-body implantable devices,” in Proc. BioEM 2021, Ghent, Belgium, 2021.
L. Quéguiner, G. Gaugain, J. Modolo, and D. Nikolayev, “Effect of gyrus folding angle on peak electric field in cerebral cortex,” in Proc. BioEM 2021, Ghent, Belgium, 2021.
I. Soares, M. Gao, A. Skrivervik, Z. Sipus, M. Zhadobov, R. Sauleau, and D. Nikolayev, “Physical bounds on implant powering efficiency using body-conformal WPT systems,” in Proc. IEEE Wireless Power Transfer Conf. (WPTC 2021), San-Diego, CA, 2021.
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., doi:10.1109/TAP.2021.3060501
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.