Kanamori Lab., Tohoku University

Lecture title: Metamaterials for 6G and Robotics Applications
Lecturer: Yoshiaki Kanamori
Lecture date: November 13, 2024

Title: Fabrication of silicon microparticle dispersion as terahertz wave refractive index control material
Authors: Shun Wakiuchi, Taiyu Okatani, Naoki Inomata, and Yoshiaki Kanamori
Journal: Optics and Laser Technology, Vol. 181, Part C, (2024) 112051
DOI: 10.1016/j.optlastec.2024.112051
URL: https://doi.org/10.1016/j.optlastec.2024.112051

Authors: Kohei Chiba, Taiyu Okatani, Naoki Inomata and Yoshiaki Kanamori
Title: Effect of fabrication defects on terahertz wave control characteristics of dielectric metamaterials operating in the terahertz region
Speaker: Kohei Chiba
Presentation Date: October 26, 2024

Authors: Taro Ikeda and Yoshiaki Kanamori
Title: Free standing diamond nanostructures formed by sacrificial layer etching for nanoelectromechanical actuators
Speaker: Taro Ikeda
Presentation Date: October 26, 2024

Title: Metamaterials and nanophotonics open up new possibilities for controlling light and terahertz waves
Conference name: The 13th International Conference on Photonics and Applications (ICPA-13)
Speaker: Yoshiaki Kanamori
Presentation Date: October 16, 2024

Title: Integrated RF-MEMS technology for reconfigurable spoof-surface-plasmon-polariton delay-line
Conference name: The 13th International Conference on Photonics and Applications (ICPA-13)
Speaker: Minh Van Nguyen and Yoshiaki Kanamori
Presentation Date: October 16, 2024

Title: 3D Bulk Metamaterials with Engineered Optical Dispersion at Terahertz Frequencies Utilizing Amorphous Multilayered Split-Ring Resonators
Authors: Ying Huang, Takanori Kida, Shun Wakiuchi, Taiyu Okatani, Naoki Inomata, and Yoshiaki Kanamori
Journal: Advanced Science, Article No. 2405378 (2024).
DOI: 10.1002/advs.202405378
URL: https://doi.org/10.1002/advs.202405378
Published: 8 July, 2024

Authors: Ying Huang, Yangxun Liu, Taiyu Okatani, Naoki Inomata, Yoshiaki Kanamori
Title: An active Fabry‒Pérot interferometer operated at terahertz frequencies based on pitch-variable subwavelength gratings
Speaker: Ying Huang
Presentation Date: July 16, 2024

Authors: Taiyu Okatani, Rei Ando, Naoki Inomata, Yoshiaki Kanamori
Title: Fabrication of visible metalenses by thermal oxidation of silicon nanopillars
Speaker: Taiyu Okatani
Presentation Date: July 16, 2024

Authors: Pratyasha Sahani, S. Nabana, T. Okatani, N. Inomata, Y. Kanamori
Title: MEMS-based double filter configuration for air gap sensing in tunable Fabry-Pérot filter
Speaker: Pratyasha Sahani
Presentation Date: July 17, 2024

Authors: Minh Nguyen, Nobuaki Kikuchi, Toshiyuki Kodama, Taiyu Okatani, Naoki Inomata, Yoshiaki Kanamori
Title: Fabrication of delay lines using spoof-surface-plasmon-polariton waveguides coupled with split-ring resonators for microwave integrated circuits
Speaker: Minh Nguyen
Presentation Date: July 17, 2024

Title: Phase-Controllable Spoof Surface Plasmon Coupling From Bull's Eye Aperture to Planar Silicon Waveguide in the Terahertz Band
Authors: Taiyu Okatani, Kaoru Imai, Yuma Takida, Seigo Ohno, Hiroaki Minamide, and Yoshiaki Kanamori
Journal: IEEE Transactions on Terahertz Science and Technology, Vol. 14, No.4, (2024) 519-530
DOI: 10.1109/TTHZ.2024.3392157
URL: https://doi.org/10.1109/TTHZ.2024.3392157

Title: Wavelength calibration using MEMS-enabled double filter configuration for air gap sensing in the tunable Fabry–Pérot filter
Authors: Pratyasha Sahani, Shiori Nabana, Taiyu Okatani, Naoki Inomata, and Yoshiaki Kanamori
Journal: AIP Advances, Vol. 14, No.7, (2024) 075006
DOI: 10.1063/5.0214684
URL: https://doi.org/10.1063/5.0214684

Title: Feasibility test on the analog configuration of electromechanical dimple-tip cantilever for the application of THz metamaterials
Authors: Ying Huang, Taiyu Okatani, Naoki Inomata, and Yoshiaki Kanamori
Journal: Optical Review, (2024)
DOI: 10.1007/s10043-024-00889-1
URL: https://doi.org/10.1007/s10043-024-00889-1
Published: 14 May 2024

Title: Pixelated gradient thickness optical filter for visible light spectroscopy
Authors: Pratyasha Sahani, Shiori Nabana, Taiyu Okatani, Naoki Inomata, and Yoshiaki Kanamori
Journal: Applied Optics, Vol. 63, No.13, (2024) 3537-3546
DOI: 10.1364/AO.519521
URL: https://doi.org/10.1364/AO.519521

Authors: Muhammad Zain Siddiqui, Mahmudur Rahman, Taiyu Okatani, Yoshiaki Kanamori, and Mustafa Ordu
Title: Tubular hollow-core fibers for terahertz guidance
Speaker: Muhammad Zain Siddiqui
Presentation Date: March 22, 2024

Title: Terahertz stretchable metamaterials with deformable dolmen resonators for uniaxial strain measurement
Authors: Taiyu Okatani, Munkh-Orgil Dashdeleg, Naoki Inomata, and Yoshiaki Kanamori
Journal: Optics Express Vol. 32, No.7, (2024) 12024-12039
DOI: 10.1364/OE.514848
URL： https://doi.org/10.1364/OE.514848

Tohoku University:
https://www.tohoku.ac.jp/en/press/tuning_a_terahertz_wave_filter.html
https://www.eng.tohoku.ac.jp/english/news/detail-,-id,2808.html

AlphaGalileo:
https://www.alphagalileo.org/en-gb/Item-Display/ItemId/243607?returnurl=https://www.alphagalileo.org/en-gb/Item-Display/ItemId/243607

Asia Research News:
https://www.asiaresearchnews.com/content/tuning-terahertz-wave-filter

EurekAlert:
https://www.eurekalert.org/news-releases/1037199

Title: Fabrication and characterization of delay lines with spoof surface plasmon polariton waveguide coupled with C-shaped metamaterials for microwave integrated circuits
Authors: Minh Van Nguyen, Nobuaki Kikuchi, Toshiyuki Kodama, Taiyu Okatani, Naoki Inomata, and Yoshiaki Kanamori
Journal: Japanese Journal of Applied Physics Vol. 63, No.3, (2024) 03SP72
DOI: 10.35848/1347-4065/ad2917
URL: https://doi.org/10.35848/1347-4065/ad2917

Title: Tunable Fabry–Perot interferometer operated in the terahertz range based on an effective refractive index control using pitch-variable subwavelength gratings
Authors: Ying Huang, Yangxun Liu, Taiyu Okatani, Naoki Inomata, and Yoshiaki Kanamori
Journal: Optics Letters Vol. 49, Issue 4, pp. 951-954 (2024)
URL： https://doi.org/10.1364/OL.515504

Title: Structural Color Filters Using Metamaterials and Their Applications
Conference name: The 30th International Display Workshops (IDW ’23)
Speaker: Yoshiaki Kanamori
Presentation Date: December 8, 2023

Pratyasha Sahani, Shiori Nabana, Taiyu Okatani, and Yoshiaki Kanamori
Title: Simultaneous Imaging and Spectroscopy with Pixelized Gradient Thickness Optical Filter
Speaker: Pratyasha Sahani
Presentation Date: December 6, 2023

Ying Huang, Taiyu Okatani, Naoki Inomata, and Yoshiaki Kanamori
Title: An electromechanical cantilever actuator with a dimpled tip used for reconfigurable THz metamaterials
Speaker: Ying Huang

Taiyu Okatani, Munkh-Orgil Dashdeleg, Naoki Inomata, and Yoshiaki Kanamori
Title: Terahertz stretchable metamaterials for uniaxial strain measurement based on dolmen resonators
Speaker: Taiyu Okatani

Minh Van Nguyen, Nobuaki Kikuchi, Toshiyuki Kodama, Taiyu Okatani, Naoki Inomata, Yoshiaki Kanamori
Title: Fabrication and characterization of static “ON”- “OFF” state SSPP devices integrating with metamaterials
Speaker: Minh Van Nguyen


Presentation Date: November 17, 2023

Authors: Minh Van Nguyen, Taiyu Okatani, and Yoshiaki Kanamori
Title: Fabrication of functional metamaterials for applications in
heat-shielding windows and 6G communications
Journal: Applied Optics, Vol. 62, No. 28, pp. 7411-7419 (2023).
DOI： 10.1364/AO.497886
URL： https://doi.org/10.1364/AO.497886

Title: Micro/nano processing technology for metamaterials Conference name: Nanocolloquium series
Speaker: Yoshiaki Kanamori
Presentation Date: October 13th, 2023

Ying Huang, Taiyu Okatani, and Yoshiaki Kanamori
Title: An electromechanical cantilever actuator with a high mechanical resonant frequency exceeding 1.5 MHz used for THz metamaterials Presentation Date: September 21, 2023

An article about the Minimal Laser Hydrogen Annealing tool jointly developed by Prof. Yoshiaki Kanamori and Sakaguchi Electric Heaters Co., Ltd. and industry-academia collaboration activities was published in the American magazine "Newsweek International".

Magazine name: Newsweek International (August 18-25, 2023 issue)
Publication date: August 12, 2023 Related faculty: Professor Yoshiaki Kanamori
Title: Sakaguchi: sensing innovation

Ying Huang, Taiyu Okatani, Naoki Inomata, and Yoshiaki Kanamori,
"Reconfigurable THz metamaterial based on microelectromechanical cantilever switches with a dimpled tip,"
Optics Express, vol.31, no.18, pp. 29744-29754 (2023).

http://opg.optica.org/OE/abstract.cfm?uri=OE-31-18-29744

Ying Huang, Taiyu Okatani, Naoki Inomata, and Yoshiaki Kanamori,
"Reconfigurable THz metamaterial based on microelectromechanical cantilever switches with a dimpled tip,"
Optics Express, vol.31, no.18, pp. 29744-29754 (2023).
https://doi.org/10.1364/OE.497514

Kohei Chiba, Taiyu Okatani, Naoki Inomata, and Yoshiaki Kanamori,
"Micro-fabricated Si subwavelength grating for frequency-domain THz beam steering covering the 0.3–0.5 THz frequency band,"
Optics Express, vol.31, no.17, pp. 27147–27160 (2023).
https://doi.org/10.1364/OE.492942

Title: Fabrication of metasurfaces for heat-shielding windows and 6G communications and investigation of the possibility of near-infrared reflection control by movable thin films
Conference name: The 13th International Conference on Metamaterials, Photonic Crystals and Plasmonics (META2023)
Speaker: Yoshiaki Kanamori
Presentation Date: July 20th, 2023

Title: Development of micro/nano processing technology for metamaterials
Conference name: The 7th A3 Metamaterials Forum 2023
Speaker: Yoshiaki Kanamori
Presentation Date: June 29th, 2023

Ying Huang, Taiyu Okatani, and Yoshiaki Kanamori
Title: Transparent electrodes for electromechanically reconfigurable THz metamaterials
Speaker: Ying Huang

Kohei Chiba, Taiyu Okatani, Naoki Inomata, and Yoshiaki Kanamori
Title: THz-wave-deflectors based on effective-refractive-index-distribution control of dielectric metamaterials
Speaker: Kohei Chiba

Presentation Date: June 27th, 2023

Naoki Inomata
Title: Cellular thermal and frequency characteristics based on thermal measurements having high temperature sensitivity and temporal resolution.
Presentation Date: May 19, 2023

The following paper published in the journal "IEEJ Transactions on Electrical and Electronic Engineering" was one of the most downloaded papers published between January 1, 2021 and December 31, 2021.
We show that the results of this research have had a great impact and interest on many researchers around the world.

Yoshiaki Kanamori,
“(Invited Review Paper) High-Efficiency Optical Filters Based on Nanophotonics,”
IEEJ Transactions on Electrical and Electronic Engineering, vol. 16, no. 5, pp. 662-672 (2021).
https://doi.org/10.1002/tee.23345

This award is given to students who meet the educational goals of the university and who have outstanding academic performance.

Award date: March 24, 2023
Award name: AY2023 President's Award
Awarding organization: Tohoku University
Winner: Ying Huang

Taiyu Okatani, Yuya Naito, and Yoshiaki Kanamori,
"Fabrication of high-aspect-ratio SiO2 nanopillars by Si thermal oxidation for metalenses in the visible region,"
Japanese Journal of Applied Physics, vol. 62, no. SG, Article number: SG1034 (2023).

https://doi.org/10.35848/1347-4065/acbfbe

Title: A reconfigurable H-shaped THz metamaterial based on an ultra-small micromechanical cantilever array
Conference name: The 70th Spring Meeting of the Japan Society of Applied Physics
Organizer: The Japan Society of Applied Physics
Speaker: Ying Huang
Presentation Date: March 17, 2023

Minh Van Nguyen, Taiyu Okatani, and Yoshiaki Kanamori
Title: Design and fabrication of functional cross-shaped metamaterials using electron beam lithography for applications in infrared shielding windows and 6G communications

Minh Van Nguyen, Toshiyuki Kodama, and Yoshiaki Kanamori
Title: Numerical calculation of frequency conversion occurring by time-modulation of the permittivity of a homogeneous medium

Presentation Date: March 17, 2023

The Young Scientist Presentation Award is designed to recognize young JSAP members for their outstanding contributed oral presentations during JSAP Spring and Autumn Meetings which would contribute to the development of the field of applied physics.

Award date: March 15, 2023
Award name: Young Scientist Presentation Award
Award: An H-shaped metamaterial-based MEMS device with a high mechanical resonant frequency for THz waves
Awarding organization: The Japan Society of Applied Physics
Winner: Huang Ying

Ying Huang, Taiyu Okatani, Naoki Inomata, and Yoshiaki Kanamori
"A reconfigurable ladder-shaped THz metamaterial integrated with a microelectromechanical cantilever array"
Applied Physics Letters, vol.122, no.5, Article number: 051705 (2023).

https://doi.org/10.1063/5.0124601

Taiyu Okatani, Yuya Naito, Yoshiaki Kanamori
Title: Fabrication of reflective metalens by thermal oxidation of high-aspect-ratio silicon nanopillars
Presentation Date: November 10th, 2022

Taiyu Okatani, Kaoru Imai, Yuma Takida, Seigo Ohno, Hiroaki Minamide, Yoshiaki Kanamori
Title: Bull’s Eye Antenna–Silicon Waveguide Coupling Device in the Terahertz Region

Zeng Zhaodong, Taiyu Okatani, Yoshiaki Kanamori
Title: Autonomously Switchable Filter Realized by Thermal Driven Bimetal Actuators

Dashdeleg Munkh-Orgil, Taiyu Okatani, Yoshiaki Kanamori
Title: Terahertz reflective metamaterials for flexible strain sensing

Ying Huang, Taiyu Okatani, Yoshiaki Kanamori
Title: An H-shaped metamaterial-based MEMS device with a high mechanical resonant frequency for THz waves

Taiyu Okatani, Yuto Sunada, Kazuhiro Hane, Yoshiaki Kanamori
Title: Isotropic 3D Bulk Metamaterial Containing Spilt-Ring Resonators

Ying Huang, Taiyu Okatani, and Yoshiaki Kanamori
Title: A switchable THz filter by integrating an H-shaped metamaterial and ultra-small MEMS switches
Presentation Date: August 2nd, 2022

The following papers published in the journal "Electronics and Communications in Japan" are the top 10 most downloaded papers published between January 1, 2019 and December 31, 2020. We show that the results of this research have had a great impact and interest on many researchers around the world.

Yoshiaki Kanamori, Tomoki Shimizu, Shin-Ichiro Nomura, and Kazuhiro Hane,
“Fabrication of refractive index sensors using polarization independent metamaterial and their application to chemical concentration measurement and DNA detection,”
Electronics and Communications in Japan, vol. 102, no. 10, pp. 34-40 (2019).
https://doi.org/10.1002/ecj.12208

Established "Metamaterials Research and Innovation Center (Meta-RIC)" -Japan's first R & D center specializing in "metamaterials"-
https://www.tohoku.ac.jp/japanese/2022/06/press20220613-01-metamaterial.html
https://www.eng.tohoku.ac.jp/news/detail-,-id,2219.html

Taiyu Okatani, Yoshiaki Kanamori
Title: Fabrication of Spin-on-Glass Film-Encapsulated Nanodot Array for Nanogap Measurement Applying Metal-Insulator-Metal Metamaterial Structure

Huang Ying, Taiyu Okatani, Yoshiaki Kanamori
Title: An electromechanically active THz filter based on an H-shaped metamaterial

MunkhOrgil Dashdeleg, Taiyu Okatani, Yoshiaki Kanamori
Title: Metal–Insulator–Metal structured optical force sensors with thin polydimethylsiloxane

Ying Huang, Taiyu Okatani, and Yoshiaki Kanamori,
"Broadband stop filters for THz waves using H-shaped metamaterials with dual electronic-plasmonic functionality,"
Japanese Journal of Applied Physics, vol. 61, no. SD, Article number: SD1007 (2022).

https://doi.org/10.35848/1347-4065/ac55dd

Taiyu Okatani, Yuto Sunada, Kazuhiro Hane, and Yoshiaki Kanamori,
"Terahertz 3D bulk metamaterials with randomly dispersed split-ring resonators,"
Nanophotonics (2022). (Ahead of Print / Just Accepted)

https://doi.org/10.1515/nanoph-2021-0703

Ying Huang, Taiyu Okatani, Yoshiaki Kanamori
Title: Broadband stop filters using H-shaped metamaterial at the THz region

Taiyu Okatani, Yuichi Sato, Kaoru Imai, Kazuhiro Hane, and Yoshiaki Kanamori,
"Improvement of silicon microdisk resonators with movable waveguides by hydrogen annealing treatment,"
Journal of Vacuum Science & Technology B, vol. 39, Article number: 030602 (2021).

https://doi.org/10.1116/6.0000971

Yoshiaki Kanamori
(Invited Review Paper) High-Efficiency Optical Filters Based on Nanophotonics
IEEJ TRANSACTIONS ON ELECTRICAL AND ELECTRONIC ENGINEERING, (2021)
https://doi.org/10.1002/tee.23345

Taiyu Okatani and Yoshiaki Kanamori
Title: Study on Lubrication Film Thickness Measurement Method Applying Metal-Insulator-Metal Metamaterial Structure

Yoshiaki Kanamori, Taiyu Okatani, Yosuke Abe, and Kazuhiro Hane
Title: Dielectric Optical Metamaterials Using Silicon Nanospheres Fabricated by Hydrogen Annealing

Yoshiaki Kanamori, Ying Huang, Kenta Nakamura, Yuma Takida, Hiroaki Minamide, and Kazuhiro Hane
Title: THz Filter Based on a Movable Electromagnetically Induced Transparency Metamaterial

Kaoru Imai, Taiyu Okatani, Yuma Takida, Seigo Ohno, Hiroaki Minamide, and Yoshiaki Kanamori
Title: Fabrication of Bull's Eye Structure for Terahertz Waves by Micromachining

Kazushige Sato, Takashi Chiba, Masao Terada, Kengo Hamada, Yoshiyuki Nakayama, Yoshiaki Kanamori, Hiroyuki Tanaka, Masashi Kase, Sommawan Khumpuang, and Shiro Hara
Title: Si Three Dimensional Structure Annealing In a Hydrogen Atmosphere Using a Minimal Laser Heating Tool

Ying Huang, Atsuki Kosugi, Yuya Naito, Yuma Takida, Hiroaki Minamide, Kazuhiro Hane and Yoshiaki Kanamori,
"Improvement in THz light extraction efficiencies with antireflection subwavelength gratings on a silicon prism,"
Japanese Journal of Applied Physics, vol. 60, no. SC, Article number: SCCL04 (2021).

https://doi.org/10.35848/1347-4065/abe995

Ying Huang, Qicong He, Dongping Zhang, and Yoshiaki Kanamori,
"Switchable band-pass filter for terahertz waves using VO2-based metamaterial integrated with silicon substrate,"
Optical Review (2021).

https://link.springer.com/article/10.1007/s10043-020-00637-1

Newspaper Name: Dempa Shimbun Daily
Date: January 15, 2021
Title: Advanced control of terahertz waves by voltage

Taiyu Okatani, Yosuke Abe, Takuya Nakazawa, Kazuhiro Hane, and Yoshiaki Kanamori,
"Fabrication of silicon nanospheres placeable on a desired position for dielectric metamaterials in the visible region,"
Optical Materials Express, vol.11, no. 1, pp. 189-197 (2021).

https://doi.org/10.1364/OME.415313

A minimal laser hydrogen annealing equipment has been commercialized through joint development with Kanamori Laboratory, Sakaguchi E.H VOC Corp., and AIST.

Related site: http://sakaguchi-dennetsu.co.jp/lineup/exlaser/exlaser_minimal.html

Ying Huang, Kenta Nakamura, Yuma Takida, Hiroaki Minamide, Kazuhiro Hane, and Yoshiaki Kanamori,
"Actively tunable THz filter based on an electromagnetically induced transparency analog hybridized with a MEMS metamaterial,"
Scientific Reports, vol.10, Article number: 20807 (2020).
DOI: 10.1038/s41598-020-77922-1

https://www.nature.com/articles/s41598-020-77922-1

Yoshiaki Kanamori
Title: Light wave control devices by metasurfaces

Yuya Naito, Atsuki Kosugi, Ying Huang, Yuma Takida, Hiroaki Minamide, Kazuhiro Hane, and Yoshiaki Kanamori
Title: Fabrication of antireflection subwavelength gratings on a silicon prism for improvement of THz light extraction efficiencies

Kazushige Sato, Takashi Chiba, Masao Terada, Kengo Hamada, Yoshiyuki Nakayama, Yoshiaki Kanamori, Hiroyuki Tanaka, Masashi Kase, Sommawan Khumpuang, and Shiro Hara
Title: Development of Minimal laser hydrogen annealing tool to flatten the surface

Taiyu Okatani, Shota Sekiguchi, Kazuhiro Hane, and Yoshiaki Kanamori,
"Surface-plasmon-coupled optical force sensors based on metal–insulator–metal metamaterials with movable air gap,"
Scientific Reports, vol.10, Article number: 14807 (2020).
DOI: 10.1038/s41598-020-71825-x

https://www.nature.com/articles/s41598-020-71825-x

Newspaper Name: Electronic Device Industry Newspaper
Date: August 27, 2020
Related faculty: Prof. Yoshiaki Kanamori
Title: Accelerating development of equipment for mass production-Minimal Fab special feature-

Title: Design and Fabrication of Metamaterials and Metasurfaces and their Applied Technologies
ISBN: 978-4-905507-46-8
Publisher: R&D Support Center Co., Ltd.

Our paper was recognized as “Top downloaded paper 2018-2019” and we received a certificate of achievement. Among works published between January 2018 and December 2019, our paper is among the top 10% most downloads in the 12 months following online publication, indicating that this research result has had a great impact and interest on many researchers around the world.

Yoshiaki Kanamori, Tomoki Shimizu, Shin-Ichiro Nomura, and Kazuhiro Hane,
“Fabrication of refractive index sensors using polarization independent metamaterial and their application to chemical concentration measurement and DNA detection,”
Electronics and Communications in Japan, vol.102, no.10, pp. 34-40 (2019).

https://doi.org/10.1002/ecj.12208

金森義明,
"小型分光器・高感度バイオセンサを実現する人工光学物質「メタマテリアル」,"
第64回光波センシング技術研究会, 東京理科大学森戸記念館, 2019年12月10～11日

金森義明,
"メタマテリアルを用いた高感度バイオセンサとDNA検出への適用,"
アグリバイオ, vol.3, no.14, pp. 44-46 (2019).