ACHIEVEMENTS

Journals

  1. K. Tachi, K. Suzuki, K. Takimoto, S. Saruwatari, K. Niitsu, P. Njogu, and H. Wakatsuchi, “Multipath Signal-Selective Metasurface: Passive Time-Varying Interlocking Mechanism to Vary Spatial Impedance for Signals with the Same Frequency.” (Under review) Preprint
  2. Y. Kunitomo, K. Takimoto, S. Vellucci, A. Monti, M. Barbuto, A. Toscano, F. Bilotti, T. Ramachandran, P. Njogu, P. T. Dang and H. Wakatsuchi, “Passive Time-Varying Waveform-Selective Metasurfaces for Attainment of Magnetic Property Control.” APL Materials, vol. 12, p. 111104, Nov. 2024. Link
  3. K. Suzuki, P. T. Dang, H. Homma, A. A. Fathnan, Y. Ashikaga, Y. Tsuchiya, S. Phang, and H. Wakatsuchi, “Experimental and Numerical Validation of Tape-Based Metasurfaces in Guiding High-Frequency Surface Waves for Efficient Power Transfer.” Applied Physics Letters, vol. 125, p. 181701, Oct. 2024.Link
  4. M. Tashiro, K. Ide, K. Asano, S. Ishii, Y. Sugiura, A. Uchiyama, A. A. Fathnan, and H. Wakatsuchi, “Metasurface-Enabled Multifunctional Single-Frequency Sensors without External Power,” NPG Asia Materials, vol. 16, p. 55, Oct. 2024. Link
  5. K. Suzuki, P. T. Dang, H. Homma, A. A. Fathnan, S. Phang, and H. Wakatsuchi, “Improved numerical estimation method for surface wave attenuation on metasurfaces,” Adv. Theory Simul., vol. 7, issue 6, p. 2301173, Apr. 2024. Link
  6. Y. Cheng, R. Xing, F. Chen, H. Luo, A. A. Fathnan, and H. Wakatsuchi, “Terahertz pseudo-waveform-selective metasurface absorber based on a square-patch structure loaded with linear circuit components,” Adv. Photon. Res., vol. 5, issue 8, p.2300303, Aug. 2024. (invited) Link
  7. J. Ino, H. Wakatsuchi, and S. Sugiura, “Noncoherent Reconfigurable Intelligent Surface With Differential Modulation and Reflection Pattern Training,” IEEE Wireless Commun. Lett., vol.13, issue 3, pp. 656-660, Mar. 2024. Link
  8. Y. Qian, Y. Cheng, H. Luo, F. Chen, A. A. Fathnan, and H. Wakatsuchi, “Design of a dual-band waveform-selective metasurface absorber based on the combination of two resonator structures loaded with nonlinear circuits,” Adv. Theory Simul., vol. 7, issue 4, p. 2300590, Jan. 2024. Link
  9. H. Takeshita, A. A. Fathnan, D. Nita, A. Nagata, S. Sugiura, and H. Wakatsuchi, “Frequency-hopping wave engineering with metasurfaces,” Nat. Commun., vol. 15, p. 196, Jan. 2024. Link
  10. K. Takimoto, K. Nakamura, P. Njogu, K. Suzuki, M. Sugimoto, A. A. Fathnan, T. Kondo, M. Mori, D. Anzai, and H. Wakatsuchi, “Inkjet Printed Intelligent Reflecting Surface for Indoor Applications,” Electron. Lett., vol. 59, issue 23, Nov. 2023. Link
  11. H. Takeshita, D. Nita, Y. Cheng, A. A. Fathnan, and H. Wakatsuchi, “Dual-Band Waveform-Selective Metasurfaces for Reflection Suppression,” Appl. Phys. Lett., vol. 123, issue 19, p. 191703, Nov. 2023. Link
  12. Y. Cheng, Y. Qian, H. Homma, A. A. Fathnan, and H. Wakatsuchi, “Waveform-selective Metasurface Absorber with a Single-patch Structure and Lumped Nonlinear Circuit for a Higher-order Mode,” IEEE Trans. Antennas Propag., vol. 71, issue 11, pp. 8677-8691, Nov. 2023. Link
  13. A. A. Fathnan, K. Takimoto, M. Tanikawa, K. Nakamura, S. Sugiura, and H. Wakatsuchi, “Unsynchronized Reconfigurable Intelligent Surfaces with Pulse-Width-Based Design,” IEEE Trans. Veh. Technol., vol. 72, issue 11, pp. 15103-15108, Nov. 2023. Link
  14. K. Takimoto, H. Takeshita, A. A. Fathnan, D. Anzai, S. Sugiura, and H. Wakatsuchi, “Perfect Pulse Filtering under Simultaneous Incidence at the Same Frequencies with Waveform-Selective Metasurfaces,” APL Mater., vol. 11, issue 8, p. 08116, Aug. 2023. Link
  15. S. Imai, H. Homma, K. Takimoto, M. Tanikawa, J. Nakamura, M. Kaneko, Y. Osaki, K. Niitsu, Y. Cheng, A. A. Fathnan, and H. Wakatsuchi, “Design and analysis for the SPICE parameters of waveform-selective metasurfaces varying with the incident pulse width at a constant oscillation frequency,” Sci. Rep., vol. 13, p. 7202, May. 2023. Link
  16. Y. Cheng, Y. Qian, Z. Li, H. Homma, A. A. Fathnan, and H. Wakatsuchi, “The design of metasurface absorber based on the ring-shaped resonator lumped with nonlinear circuit for a pulse wave,“ Journal of Electronics & Information Technology, vol. 45, no. 6, pp. 1-9, Apr. 2023. Link
  17. D. Ushikoshi, R. Higashiura, K. Tachi, A. A. Fathnan, S. Mahmood, H. Takeshita, H. Homma, M. R. Akram, S. Vellucci, J. Lee, A. Toscano, F. Bilotti, C. Christopoulos, and H. Wakatsuchi, “Pulse-driven self-reconfigurable meta-antennas,” Nat. Commun., vol. 14, p. 633, Feb. 2023. Link
  18. A. A. Fathnan, H. Homma, S. Sugiura, and H. Wakatsuchi, “Method for extracting the equivalent admittance from time-varying metasurfaces and its application to self-tuned spatiotemporal wave manipulation,” J. Phys. D: Appl. Phys., vol. 56, p. 015304, Nov. 2022. Link
  19. M. Tashiro, A. A. Fathnan, Y. Sugiura, A. Uchiyama, and H. Wakatsuchi, “Metasurface-inspired maintenance-free Internet of things tags characterised in both frequency and time domains,” Electron. Lett., vol. 58, pp. 937-939, Nov. 2022 (Selected as Top Cited Article). Link
  20. H. Wakatsuchi, and S. Phang, “Waveform-Selective Metasurfaces and Their Potential Applications in Wireless Communications,” Reviews of Electromagnetics, vol. 1, pp.33-34, 2022. Link
  21. H. Homma, M. R. Akram, A. A. Fathnan, J. Lee, C. Christopoulos, and H. Wakatsuchi, “Anisotropic Impedance Surfaces Activated by Incident Waveform,” Nanophotonics, vol. 11, no. 9, pp. 1989-2000, Feb. 2022 (invited). Link
  22. T. Nakasha, S. Phang, and H. Wakatsuchi, “Pseudo-Waveform-Selective Metasurfaces and Their Limited Performance,” Adv. Theory Simul., vol. 4, no. 1, pp. 2000187, Nov. 2020. Link
  23. R. Aihara and H. Wakatsuchi, “Metasurfaces for Efficient Digital Noise Absorption,” Sci. Rep., vol. 10, p. 17101, Oct. 2020. Link
  24. M. Tanikawa, D. Ushikoshi, K. Asano, K. Sanji, M. Ikeda, D. Anzai, and H. Wakatsuchi, “Metasurface Sensing Difference in Waveforms at the Same Frequency with Reduced Power Level,” Sci. Rep., vol. 10, p. 14283, Aug. 2020. Link
  25. K. Asano*, T. Nakasha*, and H. Wakatsuchi, “Simplified Equivalent Circuit Approach for Designing Time-Domain Responses of Waveform-Selective Metasurfaces,” Appl. Phys. Lett., vol. 116, p. 171603, Apr. 2020 (*contributed equally). Link
  26. D. Ushikoshi, M. Tanikawa, K. Asano, K. Sanji, M. Ikeda, D. Anzai, and H. Wakatsuchi, “Experimental Demonstration of Waveform-Selective Metasurface Varying Wireless Communication Characteristics at the Same Frequency Band of 2.4 GHz,” Electron. Lett., vol. 56, no. 3, pp.160-162, Feb. 2020. Link
  27. H. Wakatsuchi, “Numerical Demonstration of Non-Reciprocal Waveform-Selective Metasurfaces,” Electron. Lett., vol. 55, no. 6, pp. 312–314, Mar. 2019. Link
  28. H. Wakatsuchi, J. Long, and D. Sievenpiper, “Waveform Selective Surfaces,” Adv. Funct. Mater., vol. 29, no. 11, p. 1806386, Jan. 2019 (Selected as a Video Abstract Link). Link
  29. A. Li*, Z. Luo*, H. Wakatsuchi*, S. Kim*, and D. Sievenpiper, “Nonlinear, Active, and Tunable Metasurfaces for Advanced Electromagnetics Applications,” IEEE Access, vol. 5, pp. 27439-27452, Nov. 2017 (invited) (*: equal contribution). Link
  30. H. Wakatsuchi, D. F. Sievenpiper, and C. Christopoulos, “Designing Flexible and Versatile Metamaterial Absorbers,” IEEE EMC Magazine, vol. 5, no. 2, pp. 76-82, Aug. 2016 (invited). Link
  31. H. Wakatsuchi, F. Gao, S. Yagitani, and D. F. Sievenpiper, “Responses of Waveform-Selective Absorbing Metasurfaces to Oblique Waves at the Same Frequency,” Sci. Rep., vol. 6, p. 31371, Aug. 2016. Link
  32. S. Kim, H. Wakatsuchi, J. J. Rushton, and D. F. Sievenpiper, “Switchable nonlinear metasurfaces for absorbing high power surface waves,” Appl. Phys. Lett., vol. 108, no. 4, p. 041903, Mar. 2016. Link
  33. H. Wakatsuchi, “Time-Domain Filtering of Metasurfaces,” Sci. Rep., vol. 5, p. 16737, Nov. 2015. Link
  34. H. Wakatsuchi, D. Anzai, and C. Smartt, “Visualization of Field Distributions of Waveform-Selective Metasurface,” IEEE Antennas Wirel. Propag. Lett., vol. 15, pp. 690–693, Aug. 2015. Link
  35. F. Gao, F. Zhang, H. Wakatsuchi, and D. F. Sievenpiper, “Synthesis and Design of Programmable Subwavelength Coil Array for Near-Field Manipulation,” IEEE Trans. Microw. Theory Tech., vol. 63, no. 9, pp. 2971–2982, Jul. 2015. Link
  36. H. Wakatsuchi, “Waveform-selective metasurfaces with free-space wave pulses at the same frequency,” J. Appl. Phys., vol. 117, no. 16, p. 164904, Apr. 2015. Link
  37. H. Wakatsuchi, D. Anzai, J. J. Rushton, F. Gao, S. Kim, and D. F. Sievenpiper, “Waveform Selectivity at the Same Frequency,” Sci. Rep., vol. 5, p. 9639, Apr. 2015 (Highlighted by Yomiuri Shimbun and other 3 newspapers). Link
  38. H. Wakatsuchi, S. Kim, J. J. Rushton, and D. F. Sievenpiper, “Waveform-dependent absorbing metasurfaces,” Phys. Rev. Lett., vol. 111, no. 24, p. 245501, 2013 (Highlighted by Nature, 505, 490-491, Dec. 2023 Link and Asahi Shimbun.). Link
  39. H. Wakatsuchi, J. J. Rushton, J. Lee, F. Gao, M. Jacob, S. Kim, and D. F. Sievenpiper, “Experimental demonstration of nonlinear waveform-dependent metasurface absorber with pulsed signals,” Electron. Lett., vol. 49, no. 24, pp. 1530–1531, Nov. 2013 (Selected as a featured article). Link
  40. H. Wakatsuchi, S. Kim, J. J. Rushton, and D. F. Sievenpiper, “Circuit-based nonlinear metasurface absorbers for high power surface currents,” Appl. Phys. Lett., vol. 102, no. 21, p. 214103, May. 2013. Link
  41. H. Wakatsuchi, T. Sakai, S. Watanabe, M. Kojima, Y. Yamashiro, H. Sasaki, K. Sasaki, and O. Hashimoto, “Application of Reproducible Measurements of Complex Permittivities to Crystalline Lens From 500 MHz to 50 GHz,” IEEE Trans. Electromagn. Compat., vol. 54, no. 6, pp. 1298–1301, Sep. 2012. Link
  42. H. Wakatsuchi, J. Paul, and C. Christopoulos, “Performance of customizable cut-wire-based metamaterial absorbers: Absorbing mechanism and experimental demonstration,” IEEE Trans. Antennas Propag., vol. 60, no. 12, pp. 5743–5752, Aug. 2012. Link
  43. H. Wakatsuchi, J. Paul, S. Greedy, and C. Christopoulos, “Cut-wire metamaterial design based on simplified equivalent circuit models,” IEEE Trans. Antennas Propag., vol. 60, no. 8, pp. 3670–3678, May. 2012. Link
  44. H. Wakatsuchi and C. Christopoulos, “Generalized scattering control using cut-wire-based metamaterials,” Appl. Phys. Lett., vol. 98, no. 22, p. 221105, Jun. 2011. Link
  45. H. Wakatsuchi, S. Greedy, C. Christopoulos, and J. Paul, “Customised broadband metamaterial absorbers for arbitrary polarisation,” Opt. Express, vol. 18, no. 21, pp. 22187–22198, Oct. 2010. Link
  46. H. Wakatsuchi, S. Greedy, J. Paul, and C. Christopoulos, “Efficient modelling method for artificial materials using digital filtering techniques and emc applications,” IEICE Trans. Commun., vol. E93-B, no. 7, pp. 1760–1767, Jul. 2010. Link
  47. H. Wakatsuchi, M. Hanazawa, S. Watanabe, A. Nishikata, M. Kouzai, M. Kojima, Y. Yamashiro, K. Sasaki, and O. Hashimoto, “The Measurements of the Complex Permittivities of Blood Samples in Quasi-Millimeter Wave Bands,” IEICE Trans. Commun., vol. E90-B, no. 6, pp. 1357–1359, Jun. 2007. Link

Conferences (in English)

  1. S. Vellucchi, A. Monti, M. Barbuto, H. Wakatsuchi, A. Toscano, and F. Bilotti, "Radiation and Scattering Control of Antennas Through Self-Tuning Metasurfaces with Frequency and Time-Domain Selective Properties", 19th European Conference on Antennas and Propagation, Stockholm, Sweden, 30 Mar. - 4 Apr. 2025. (Submitted)
  2. S. Vellucchi, A. Monti, M. Barbuto, A. A. fathnan, M. Karamirad, M. Longhi, D. Ramaccia, L. Stefanini, H. Wakatsuchi, A. Toscano, and F. Bilotti, "Design of Self-Reconfigurable Huygens Metasurfaces for Antenna Applications", The Eighteenth International Congress on Artificial Materials for Novel Wave Phenomena – Metamaterials 2024, Crete, Greece, 9 Sep. - 14 Sep 2024.
  3. H. Wakatsuchi, "Passive Time-Varying Circuit-Based Metasurfaces and their Applications", The Eighteenth International Congress on Artificial Materials for Novel Wave Phenomena – Metamaterials 2024, Crete, Greece, 9 Sep. - 14 Sep 2024. (Invited)
  4. H. Wakatsuchi and A. A. Fathnan, "Waveform-Selective Metasurfaces Varying in Time and Space at the Same Frequencies in Accordance with Pulse Width", META 2024, 14th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Toyama, Japan, 16 Jul. - 19 Jul 2024. (Invited)
  5. H. Wakatsuchi, "Additional Selectivity at the Same Frequencies with Waveform-Selective Metasurfaces and their Applications", The Seventeenth International Congress on Artificial Materials for Novel Wave Phenomena – Metamaterials 2023, pp. VI-358, Crete, Greece, 11 Sep. - 16 Sep 2023. (Invited)
  6. S. Vellucci, A. Monti, M. Barbuto, A. A. Fathnan, M. Karamidad, M. Longhi, D. Ramaccia, L. Stefanini, H. Wakatsuchi, A. Toscano, and F. Bilotti, "Waveform-selective Huygens Metasurfaces for Antenna Applications", 2024 IEEE International Symposium on Antennas and Propagation and ITNC-USNC-URSI Radio Science Meeting, pp. 1033-1034, Florence, Italy, 14 Jul. - 19 Jul. 2024.
  7. A. A. Fathnan, H. Takeshita, D. Nita, S. Sugiura, and H. Wakatsuchi, "Enabling Frequency-hopping Selectivity with Locally Self-tuned Metasurfaces", The Seventeenth International Congress on Artificial Materials for Novel Wave Phenomena – Metamaterials 2023, pp. X-105-107, Crete, Greece, 11 Sep. - 16 Sep. 2023.
  8. K. Takimoto, A. A. Fathnan, S. Sugiura, and H. Wakatsuchi, "Passive Reconfigurable Intelligent Surfaces with Varying Electromagnetic Response in Accordance with the Pulse Width at the Same Frequency", The Seventeenth International Congress on Artificial Materials for Novel Wave Phenomena – Metamaterials 2023, pp. X-371-373, Crete, Greece, 11 Sep. - 16 Sep. 2023.
  9. M. Tashiro, A. A. Fathnan, Y. Sugiura, A. Uchiyama, and H. Wakatsuchi, "Multifunctional Metasurface-Based Sensors Operating at a Single Frequency", The Seventeenth International Congress on Artificial Materials for Novel Wave Phenomena – Metamaterials 2023, pp. X-379-381, Crete, Greece, 11 Sep. - 16 Sep. 2023.
  10. K. Niitsu, J. Nakamura, M. Kaneko, Y. Osaki, and H. Wakatsuchi, "A 351pW Stand-By Power 0.017mm2 37.4GHz Fully Integrated LC Oscillator-Based OOK Transmitter Using Low-Leakage Switch in 22nm CMOS", 2023 International Conference on Solid State Devices and Materials, Nagoya, Japan, 5 Sep. - 8 Sep. 2023.
  11. K. Suzuki, H. Homma, A. A. Fathnan, Y. Ashikaga, Y. Tsuchiya, S. Phang, and H. Wakatsuchi, "Metasurface-Based Tapes for Efficient Transmission of High-Frequency Signals," XXXXVth URSI General Assembly and Scientific Symposium, Sapporo, Japan, 19 Aug. - 26 Aug. 2023.
  12. R. Miyamoto, A. A. Fathnan, and H. Wakatsuchi, "Simplified Equivalent Circuit Models for Waveform-Selective Metasurfaces Responding to Repeated Pulses," XXXXVth URSI General Assembly and Scientific Symposium, Sapporo, Japan, 19 Aug. - 26 Aug. 2023.
  13. M. Tashiro, A. Uchiyama, Y. Sugiura, A. A. Fathnan, and H. Wakatsuchi, "Maintenance-Free Metasurface-based Sensing," XXXXVth URSI General Assembly and Scientific Symposium, Sapporo, Japan, 19 Aug. - 26 Aug. 2023.
  14. A. A. Fathnan and H. Wakatsuchi, "Controlling Beam Directions using Self-reconfigurable Time-varying Metasurfaces," XXXXVth URSI General Assembly and Scientific Symposium, Sapporo, Japan, 19 Aug. - 26 Aug. 2023.
  15. H. Homma, J. Lee, and H. Wakatsuchi, "Anisotropic Waveform-Selective Metasurfaces," XXXIV General Assembly and Scientific Symposium of the International Union of Radio Science, pp. Tu-FIP-B22-15, Rome, Italy, 28 Aug. - 4 Sept. 2021.
  16. H. Takeshita, D. Nita, and H. Wakatsuchi, "Multi-Band Waveform-Selective Metasurfaces and Their Application," XXXIV General Assembly and Scientific Symposium of the International Union of Radio Science, pp. Tu-FIP-D10-2, Rome, Italy, 28 Aug. - 4 Sept. 2021.
  17. R. Higashiura and H. Wakatsuchi, "Reconfigurable Antennas Based on Waveform-Selective Metasurfaces," XXXIV General Assembly and Scientific Symposium of the International Union of Radio Science, pp. Tu-FIP-D10-3, Rome, Italy, 28 Aug. - 4 Sept. 2021.
  18. H. Wakatsuchi and M. Tanikawa, "Transient Wavefront Shaping Based on Waveform-Selective Metasurface," XXXIV General Assembly and Scientific Symposium of the International Union of Radio Science, pp. Tu-FIP-D10-4, Rome, Italy, 28 Aug. - 4 Sept. 2021.
  19. H. Wakatsuchi, R. Higashiura, H. Takeshita, and D. Nita, "Multi-Band Waveform-Selective Metasurfaces Transmitting Continuous Waveforms Based on More Than One Frequency," Metamaterials'2020 the 14th International Congress on Artificial Materials for Novel Wave Phenomena, pp. X-284-X-286, New York, US, 28 Sept. - 3 Oct. 2020.
  20. H. Wakatsuchi, D. Ushikoshi, S.M. Mahmood, R. Higashiura, C. Smartt, and C. Christopoulos, "Antenna Applications Based on Waveform-Selective Metasurfaces Varying Time-Domain Responses at the Same Frequency," Metamaterials'2019 the 13th International Congress on Artificial Materials for Novel Wave Phenomena, pp. X-459-X-461, Rome, Italy, 16-21 Sept. 2019.
  21. M. Tanikawa, K. Asano, D. Ushikoshi, K. Sanji, M. Ikeda, D. Anzai, and H. Wakatsuchi, "Waveform-Selective Metasurfaces Responding to Low-Power Signals," Progress In Electromagnetics Research Symposium, Toyama, Japan, August 2018.
  22. T. Nakasha, K. Asano, D. Ushikoshi, J. Long, D.F. Sievenpiper, and H. Wakatsuchi, "Ultra-Broadband Metasurface Absorbers," Progress In Electromagnetics Research Symposium, Toyama, Japan, August 2018.
  23. D. Nita, K. Asano, D. Ushikoshi, and H. Wakatsuchi, "Design of Dual-Band Waveform-Selective Metasurfaces," Progress In Electromagnetics Research Symposium, Toyama, Japan, August 2018.
  24. H. Wakatsuchi and D.F. Sievenpiper, "Waveform-Selective Absorbing Metasurfaces," Progress In Electromagnetics Research Symposium, Toyama, Japan, August 2018 (invited).
  25. D. Ushikoshi, K. Asano, K. Sanji, M. Ikeda, D. Anzai, and H. Wakatsuchi, "Response of Waveform-Selective Metasurfaces to Wi-Fi Signals," Progress In Electromagnetics Research Symposium, Toyama, Japan, August 2018.
  26. K. Asano and H. Wakatsuchi, "Application of Waveform-Selective Metasurfaces to Electromagnetic Interference Issues," Progress In Electromagnetics Research Symposium, Toyama, Japan, August 2018.
  27. K. Asano and H. Wakatsuchi, "Time-Domain Responses of Waveform-Selective Metasurfaces," IEEE APS/URSI 2018, pp. 1477-1478, Boston, US, July 2018.
  28. D. Ushikoshi and H. Wakatsuchi, "Metasurfaces to Control Direction of Wave Propagation at the Same Frequency," IEEE APS/URSI 2018, pp. 1891-1892, Boston, US, July 2018.
  29. H. Wakatsuchi and D.F. Sievenpiper, "Waveform-Selective Scattering Control through Circuit-Based Metasurfaces at the Same Frequency," IEEE APS/URSI 2017, pp. 67-68, San Diego, US, July 2017.
  30. H. Wakatsuchi and C. Smartt, "Field Visualisation of waveform-selective metasurfaces," Metamaterials'2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, Oxford, UK, 7-10 Sept. 2015.
  31. D. Sievenpiper, R. Quarfoth, H. Wakatsuchi, Z. Luo, "Nonlinear, Active, and Anisotropic Impedance Surfaces", 9th European Conference on Antennas and Propagation, Lisbon, Portugal, April, 2015. 
  32. H. Wakatsuchi, J. Rushton, S. Kim, D. Sievenpiper, “Metasurfaces to select waveforms at the same frequency,” 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, pp. 286-288, Copenhagen, Denmark, Aug. 2014.
  33. S. Kim, H. Wakatsuchi, J. J. Rushton, and D. F. Sievenpiper, “Nonlinear metamaterial surfaces for absorption of high power microwave surface currents,” 2013 IEEE International Symposium on Antennas and Propagation and USNC-URSI National Radio Science Meeting, Orlando, FL, July 2013.
  34. H. Wakatsuchi, S. Kim, J. J. Rushton, and D. F. Sievenpiper, “Numerical and experimental demonstration of nonlinear metamaterial surfaces designed for high power surface current absorption,” Metamaterials'2012 Sixth International Congress on Advanced Electromagnetic Materials in Microwave and Optics, pp. 514–516, St. Petersburg, Russia, Sep. 2012.
  35. H. Wakatsuchi, J. Paul, S. Greedy, and C. Christopoulos, “Performance enhancement of cut–wire–based metamaterial absorbers,” Metamaterials'2011 Fifth International Congress on Advanced Electromagnetic Materials in Microwave and Optics, pp. 555–557, Barcelona, Spain, Oct. 2011.
  36. J. Paul, S. Greedy, H. Wakatsuchi, and C. Christopoulos, “Measurements and Simulations of Enclosure Damping Using Loaded Antenna Elements,” EMC Europe 2011, pp. 676–679, York, U.K., Sep. 2011.
  37. H. Wakatsuchi, J. Paul, S. Greedy, and C. Christopoulos, “Contribution of Conductive loss to Cut–Wire Metamaterial Absorbers,” AP-RASC'10 2010 Asia-Pacific Radio Science Conference, pp. DC1–7, Toyama, Japan, Sep. 2010.
  38. H. Wakatsuchi and J. Paul, “Predictions of Resonant Frequency Shifts in Asymmetrical Cut–Wire Metamaterials,” Metamaterials'2010 Fourth International Congress on Advanced Electromagnetic Materials in Microwave and Optics, pp. 881–883, Karlsruhe, Germany, Sep. 2010.
  39. C. Christopoulos, J. D. Paul, D. W. P. Thomas, S. Greedy, H. Wakatsuchi, and M. H. Alsadi, “Characterisation and modelling of materials for electromagnetic shielding,” UK Magnetic Society Electromagnetic Field Protection, Abingdon, U.K., Apr. 2010.
  40. H. Wakatsuchi, S. Greedy, J. Paul, and C. Christopoulos, “Implementation of Digital Filtering Techniques to EBG structures and Metamaterials for Efficient Numerical Simulations,” UK URSI Festival of Radio Science, Birmingham, U.K., Dec. 2009.
  41. H. Wakatsuchi, S. Greedy, J. Paul, and C. Christopoulos, “Efficient Modelling of Band–gap and Metamaterial Structures in EMC,” 2009 International Symposium Electromagnetic Compatibility Kyoto, pp. 745–748, Kyoto, Japan, July 2009.
  42. T. Sakai, M. Hanazawa, H. Wakatsuchi, A. Nishikata, and O. Hashimoto, “Measurements of Dielectric Properties of Biological Tissues in Mm–wave Band by Free–space Reflection Method, Ellipsometry Method and Coaxial Probe Method,” Progress in Electromagnetics Research Symposium (PIERS) 2007, pp. 45, Prague, Czech Republic, Aug. 2007.
  43. H. Wakatsuchi, M. Hanazawa, T. Sakai, S. Watanabe, M. Kojima, Y. Yamashiro, K. Sasaki, and O. Hashimoto, “Complex Permittivities Measurements of Ocular Tissues in Quasi-Millimeter and Millimeter Wave Bands,” BEMS The Bioelectromagnetics Society 29th Annual Meeting, pp. 497–499, Kanazawa, Japan, June 2007.
  44. H. Wakatsuchi, M. Hanazawa, T. Sakai, S. Watanabe, M. Kojima, Y. Yamashiro, K. Sasaki, and O. Hashimoto, “The Complex Permittivities of Ocular Tissues at Millimeter-Wave Bands,” EBEA 2007 The European Bioelectromagnetics Association, pp. 56, Bordeaux, France, Apr. 2007.
  45. H. Wakatsuchi, M. Hanazawa, T. Sakai, S. Watanabe, M. Kojima, Y. Yamashiro, K. Sasaki, and O. Hashimoto, “Complex Permittivities Measurements of Eye Tissues in Quasi-millimeter Wave Band,” 2006 KMU Workshop on Ocular changes Induced by Electromagnetic Waves, Kanazawa, Japan, Dec. 2006.
  46. H. Wakatsuchi, M. Hanazawa, S. Watanabe, M. Kouzai, A. Nishikata, and O. Hashimoto, “Complex Permittivity Measurement of Blood in Millimeter Wave Band,” Progress in Electromagnetics Research Symposium (PIERS) 2006, pp. 127, Tokyo, Japan, Aug. 2006.
  47. M. Kouzai, A. Nishikata, H. Wakatsuchi, K. Fukunaga, M. Hanazawa, and S. Watanabe, “Complex Permittivity Measurement of Some Biological Materials at 33–50GHz by Dielectric Tube Method,” BEMS 28th Annual Meeting, pp. 312–316, Cancun, Mexico, June 2006.
  48. M. Hanazawa, H. Wakatsuchi, S. Watanabe, M. Kouzai, A. Nishikata, and O. Hashimoto, “Complex Permittivity Measurement of Blood by Probe Method,” BEMS 28th Annual Meeting, pp. 93–96, Cancun, Mexico, June 2006.
  49. H. Wakatsuchi, M. Hanazawa, S. Watanabe, A. Nishikata, M. Kozai, M. Kojima, Y. Yamashiro, K. Sasaki, and O. Hashimoto, “Complex Permittivity Measurement of Biological Tissues and Numerical Analysis of SAR Distribution in Quasi–Millimeter Wave Band,” 2nd Pan-Pacific EMC Joint Meeting PPEMC'06, Okayama, Japan, May 2006.

Conferences (in Japanese)

  1. 猪野潤,若土弘樹,杉浦慎哉,“ミリ波帯知的反射面の簡易トレーニングに関する一検討”,電子情報通信学会,ソサイエティ大会,名古屋,2023年9月.
  2. 若土弘樹,“波形選択メタサーフェスとその通信応用デバイス”,情報処理学会,全国大会,東京,2023年3月. (招待)
  3. 若土弘樹,“メタサーフェスのパルス幅選択性に基づく分散処理技術”,情報処理学会,全国大会,オンライン,2022年3月. (招待)
  4. 本間晴貴,Jiyeon Lee,若土弘樹,“非線形性を用いた異方性メタサーフェスの設計,”電子情報通信学会,ソサイエティ大会,vol. C-2-54,pp. 64,オンライン,2021年9月.
  5. 田代将也,若土弘樹,“熱に応じた波形選択メタサーフェスの制御,”電子情報通信学会,ソサイエティ大会,vol. C-2-55,pp. 65,オンライン,2021年9月.
  6. 竹下紘基,若土弘樹,“マルチバンド波形選択メタサーフェスとその応用,”電子情報通信学会,ソサイエティ大会,vol. C-2-56,pp. 66,オンライン,2021年9月.
  7. 瀧本海里,竹下紘基,杉浦慎哉,若土弘樹,“波形選択メタサーフェスに基づいたパルス分割多重通信システムに関する基礎検討,”電子情報通信学会,ソサイエティ大会,vol. C-2-57,pp. 67,オンライン,2021年9月.
  8. 榊原久二男,安在大祐,平山裕,前田佳弘,若土弘樹,牛島達夫,“デジタル情報機器による学生実験における教育効果,”計測自動制御学会,中部支部第169回教育工学研究会,オンライン,2021年3月.
  9. 相原亮哉,若土弘樹,“メタサーフェス電波吸収体に基づいた効率的なデジタルノイズの吸収手法の検討,”電子情報通信学会,ソサイエティ大会,vol. C-2-49,pp. 56,大阪,2019年9月.
  10. 谷川瑞紀,三治健一郎,池田正和,安在大祐,若土弘樹,“低電力波形選択メタサーフェスの数値解析評価,”電子情報通信学会,ソサイエティ大会,vol. C-2-50,pp. 57,大阪,2019年9月.
  11. 中舎朋之,Sendy Phang,若土弘樹,“線形メタサーフェスによる擬似的な波形選択性,”電子情報通信学会,ソサイエティ大会,vol. C-2-51,pp. 58,大阪,2019年9月.
  12. 仁多大輔,若土弘樹,“マルチバンド波形選択メタサーフェス,”電子情報通信学会,ソサイエティ大会,vol. C-2-52,pp. 59,大阪,2019年9月.
  13. 東浦陸,牛越大樹,Suhair M. Mahmood,Chris Smartt,Christos Christopoulos,若土弘樹,“波形選択メタサーフェスによる同一周波数電波の伝搬操作,”電子情報通信学会,ソサイエティ大会,vol. C-2-53,pp. 60,大阪,2019年9月.
  14. 牛越大樹,浅野耕生,若土弘樹,“開放空間における波形選択メタサーフェスの特性,”電子情報通信学会,ソサイエティ大会,vol. C-2-39,pp. 47,東京,2017年9月.
  15. 井手虹介,牛越大樹,浅野耕生,石井智,若土弘樹,“光に応じた波形選択メタサーフェスの制御,”電子情報通信学会,ソサイエティ大会,vol. C-2-40,pp. 48,東京,2017年9月.
  16. 浅野耕生,牛越大樹,若土弘樹,“波形選択メタサーフェスの電磁界干渉問題への応用,”電子情報通信学会,ソサイエティ大会,vol. C-2-41,pp. 49,東京,2017年9月.
  17. 中舎朋之,浅野耕生,牛越大樹,Long Jiang,Daniel F. Sievenpiper,若土弘樹,“超広帯域メタサーフェス電波吸収体,”電子情報通信学会,ソサイエティ大会,vol. C-2-42,pp. 50,東京,2017年9月.
  18. 牛越大樹,浅野耕生,三治健一郎,池田正和,安在大祐,若土弘樹,“2.4GHz帯における波形選択メタサーフェスの開発,”電子情報通信学会,ソサイエティ大会,vol. C-2-45,pp. 55,札幌,2016年9月.
  19. 浅野耕生,牛越大樹,三治健一郎,池田正和,安在大祐,若土弘樹,“波形選択メタサーフェスの動作周波数と設計パラメータ,”電子情報通信学会,ソサイエティ大会,vol. C-2-46,pp. 56,札幌,2016年9月.
  20. 若土弘樹,“波形選択メタサーフェスによる散乱パラメータ操作,”電子情報通信学会,ソサイエティ大会,vol. C-2-47,pp. 57,札幌,2016年9月.
  21. 安在大祐,若土弘樹,“波形選択メタサーフェスを用いたOFDM伝送方式に関する一検討,” 放送技術研究会, 小樽, 2016年2月.
  22. 若土弘樹,“波形選択メタサーフェス,” 電子情報通信学会, 総合大会, vol. B–1–118, pp. 118, 草津, 2015年3月.
  23. 若土弘樹, 酒井泰二, 渡辺聡一, 橋本修, “5~50 GHzにおける液体生体組織の複素比誘電率に対する温度依存性,” 電子情報通信学会, 総合大会, vol. B–4–41, pp. 350, 北九州, 2008年3月.
  24. 若土弘樹, 酒井泰二, 渡辺聡一, 小島正美, 山代陽子, 佐々木一之, 橋本修, “5~50 GHzにおける眼組織の複素比誘電率測定に対する組織採取後の保存条件の影響,” 電子情報通信学会, ソサイエティ大会, vol. B–4–30, pp. 293, 鳥取, 2007年9月.
  25. 若土弘樹, 花澤理宏, 酒井泰二, 渡辺聡一, 小島正美, 山代陽子, 佐々木一之, 橋本修, “準ミリ波帯及びミリ波帯における眼組織の複素比誘電率測定,” 電子情報通信学会, 総合大会, vol. B–4–12, pp. 336, 名古屋, 2007年3月.
  26. 若土弘樹, 花澤理宏, 渡辺聡一, 小島正美, 山代陽子, 佐々木一之, 橋本修, “電気定数の不確定性及び血流による冷却を考慮したミリ波に曝露した家兎眼の熱解析,” 電子情報通信学会, ソサイエティ大会, vol. B–4–34, pp. 310, 金沢, 2006年9月.
  27. 若土弘樹, 花澤理宏, 渡辺聡一, 小島正美, 山代陽子, 佐々木一之, 橋本修, “血液の複素比誘電率測定における再現性の改善,” 電気学会, 全国大会, 1–124, vol. 1, pp. 154, 横浜, 2006年3月.
  28. 若土弘樹, 花澤理宏, 小島正美, 山代陽子, 渡辺聡一, 橋本修, 佐々木一之, “準ミリ波帯における血液の複素比誘電率測定,” 電子情報通信学会, ソサイエティ大会, vol. B–4–45, pp. 369, 札幌, 2005年9月.

Patents

  1. 安在大祐,若土弘樹,「波形選択性と時間領域制御を実現する通信端末,通話システム」,特願2014-257559
  2. 若土弘樹,「フィルタ」,特願2014-253858(25784-PCT,2015年7月15日)(JSTからPCT出願支援

Prizes (PI)

  1. 2022-2023 Top Cited Article Certificate, Electronics Letters, July 2024
  2. 名古屋工業大学2023年度教員評価、優秀賞、名古屋工業大学、2024年6月
  3. 名古屋工業大学褒賞、優秀賞、名古屋工業大学、2023年11月
  4. 名古屋工業大学褒賞、優秀賞、名古屋工業大学、2020年11月
  5. 名古屋工業大学褒賞、優秀賞、名古屋工業大学、2016年11月
  6. 安藤博記念学術奨励賞、安藤研究所、2016年6月
  7. 電気通信普及財団賞、電気通信普及財団、2015年3月
  8. Research Grant, 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics – Metamaterials2014, Copenhagen, Denmark, Aug. 2014.
  9. 船井研究奨励賞、船井情報科学財団、2014年4月
  10. Researcher Grant, Metamaterials'2011 Fifth International Congress on Advanced Electromagnetic Materials in Microwave and Optics, Oct, 2011
  11. AP–RASC’10 Student Paper Competition, Second Prize, AP-RASC'10 2010 Asia-Pacific Radio Science Conference, Sep. 2010
  12. York EMC Services Ltd Best Paper Prize, Festival of Radio Science URSI, Dec. 2009
  13. Graduate School Travel Prize, University of Nottingham, July 2009
  14. 青山学院大学スカラーシップ、青山学院大学、2007年5月
  15. 青山学院大学スカラーシップ、青山学院大学、2006年5月

Prizes (Students)

  1. 永田温子、令和五年度学業成績優秀賞、電子情報通信学会東海支部、2024年3月
  2. 瀧本海里、名古屋工業大学学生論文賞(学生Q1ジャーナル賞)、名古屋工業大学、2024年3月
  3. 本間晴貴、名古屋工業大学学生論文賞(学生Q1ジャーナル賞)、名古屋工業大学、2023年2月
  4. 浅野耕生、電影会賞、電影会、2017年3月

Press

  1. 日刊工業新聞、2016年5月21日、21面
  2. 電気新聞、2016年3月15日、5ページ
  3. 日刊工業新聞、2015年6月17日、17面
  4. 中部経済新聞、2015年6月16日、3面
  5. 読売新聞、2015年6月1日、朝刊、25面
  6. 電子デバイス産業新聞、2015年4月23日、8面
  7. 朝日新聞、2014年2月21日、朝刊、24面