Graduate School of Organic Materials Science, Yamagata University
Yamagata University

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Published Paper

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Published Paper

  1. "MXene-Based High-Performance Soft Pressure Sensor Using Gel–Deep Eutectic Solvent Composite"
    Riku Sasaki, Kaiin Tou, Shoma Kamanoi, Junya Yoshida, Yoshihito Takabe, Yasuyuki Miura, Eri Kamiya, Ayana Hirayama, Tomohito Sekine*
    Micromachines, vol. 16, pp: 579-591 (2025).
    https://doi.org/10.3390/mi16050579
  2. "A wearable AI sensing system for non-invasive and experimental characterization of biological tissue hardness"
    Kenta Nara, Ayana Hirayama, Yasuyuki Miura, Yoshihito Takabe, Riku Sasaki, Koki Ozawa, Yi-Fei Wang, Yasunori Takeda, Daisuke Kumaki, Hiroyuki Matsui, Tomohito Sekine*
    Chemical Engineering Journal, Vol. 511, pp: 162180-162189 (2025).
    https://doi.org/10.1016/j.cej.2025.162180
  3. "Ultra-Rapidly Responsive Electret-Based Flexible Pressure Sensor via Functional Polymeric Nanoparticle Synthesis"
    Tatsuya Yasuda, Ryutaro Komine, Ryoma Nojiri, Yoshihito Takabe, Kenta Nara, Takeru Kaneko, Syunsuke Horigome, Yasunori Takeda, Yi-Fei Wang, Seigou Kawaguchi*, Tomohito Sekine*
    Advanced Functional Materials, vol. 34, pp: 2402064-2402075 (2024).
    【Selected Front Cover】
    https://doi.org/10.1002/adfm.202402064
  4. "Ag Nanoparticle Ink for High-Resolution Printed Electrodes and Organic Thin‐Film Transistors Using Reverse-Offset Printing"
    Yamato Suzuki, Daisuke Kumaki*, Taichi Kikkawa, Toshiki Yoshioka, Shunsuke Horigome, Yasunori Takeda, Tomohito Sekine, Shizuo Tokito*
    Advanced Electronic Materials, vol. 10, pp: 2400546-2400554 (2024).
    https://doi.org/10.1002/aelm.202400546
  5. "Facile printing of liquid-metal-based stretchable conductor using EGaIn/Ga2O3 composite"
    Yi-Fei Wang, Takeru Kaneko, Ayako Yoshida, Yasunori Takeda, Junya Yoshida, Tomohito Sekine, Daisuke Kumaki, Shizuo Tokito*
    Flexible and Printed Electronics, vol. 9, pp:035004-035010 (2024).
    https://iopscience.iop.org/article/10.1088/2058-8585/ad6333
  6. "Advancing Robotic Gripper Control with the Integration of Flexible Printed Pressure Sensors"
    Yasunori Takeda, Yi-Fei Wang, Ayako Yoshida, Tomohito Sekine, Daisuke Kumaki, Shizuo Tokito*
    Advanced Engineering Materials, vol. 26, pp: 2302031-2302038 (2024).
    https://doi.org/10.1002/adem.202302031
  7. "Printing pressure optimization in reverse offset printing for micrograting fabrication"
    Hayato Komatsu, Yasunori Takeda, Yi-Fei Wang, Ayako Yoshida, Tomohito Sekine, Shizuo Tokito*
    Japanese Journal of Applied Physics, vol. 63, pp: 020904-020908 (2024).
    https://iopscience.iop.org/article/10.35848/1347-4065/ad2484
  8. "Development of printed X-ray grating and its application to an imaging system"
    Hayato Komatsu, Wataru Yashiro, Xiaoyu Liang, Ayako Yoshida, Yasunori Takeda, Tomohito Sekine, Daisuke Kumaki, Shizuo Tokito*
    Japanese Journal of Applied Physics, vol. 63, pp: 040906-040910 (2024).
    https://iopscience.iop.org/article/10.35848/1347-4065/ad33f4
  9. "Printed Composite Film with Microporous/Micropyramid Hybrid Conductive Architecture for Multifunctional Flexible Force Sensors"
    Yi-Fei Wang, Junya Yoshida, Yasunori Takeda, Ayako Yoshida, Takeru Kaneko, Tomohito Sekine, Daisuke Kumaki, Shizuo Tokito*
    Nanomaterials, vol. 14, pp: 63-73 (2024).
    https://doi.org/10.3390/nano14010063
  10. "Robotic e-skin for high performance stretchable acceleration sensor via combinations of novel soft and functional polymers"
    Tomohito Sekine*, Keita Ito, Yoshinori Shouji, Ryosuke Suga, Tatsuya Yasuda, Yi-Fei Wang, Yasunori Takeda, Daisuke Kumaki, Fabrice Domingues Dos Santos, Huan g Tong, Atsushi Miyabo, Shizuo Tokito
    Applied Materials Today, vol. 33, pp: 101877-101886 (2023).
    https://doi.org/10.1016/j.apmt.2023.101877
  11. "Printed Bilayer Liquid Metal Soft Sensors for Strain and Tactile Perception in Soft Robotics"
    Takeru Kaneko, Yi-Fei Wang*, Mayuka Hori, Tomohito Sekine, Ayako Yoshida, Yasunori Takeda, Daisuke Kumaki, Shizuo Tokito*
    Advanced Materials Technologies, vol. 8, pp: 2300436-2300444, 2023.
    https://doi.org/10.1002/admt.202300436
  12. "Unobstructive Heartbeat Monitoring of Sleeping Infants and Young Children Using Sheet-Type PVDF Sensors"
    Daisuke Kumaki*, Yuko Motoshima*, Fujio Higuchi, Katsuhiro Sato, Tomohito Sekine*, Shizuo Tokito*
    Sensors, vol. 23, pp: 9252-9263 (2023).
    https://doi.org/10.3390/s23229252
  13. "Printed Directional Bending Sensor with High Sensitivity and Low Hysteresis for Human Motion Detection and Soft Robotic Perception"
    Yi-Fei Wang*, Ayako Yoshida, Yasunori Takeda, Tomohito Sekine, Daisuke Kumaki, Shizuo Tokito*
    Sensors, vol 23, pp: 5041-5052 (2023).
    https://doi.org/10.3390/s23115041
  14. "Micro-Pore Composed Soft Pressure Sensor with Ether‐Surfactant via High‐Sensitivity in Wide Range for Robotic Machine Interface Application"
    Kaiin Tou, Kenta Nara, Tomohito Sekine*, Yi-Fei Wang, Yasunori Takeda, Daisuke Kumaki, Shizuo Tokito*
    Advanced Sensor Research vol. 2, pp: 2300045-2300051 (2023).
    【Selected Front Cover】
    https://doi.org/10.1002/adsr.202300045
  15. "Fast Response, High-Power Tunable Ultrathin Soft Actuator by Functional Piezoelectric Material Composite for Haptic Device Application"
    Yoshinori Shouji, Tomohito Sekine*, Keita Ito, Naoya Ito, Tatsuya Yasuda, Yi‐Fei Wang, Yasunori Takeda, Daisuke Kumaki, Fabrice Domingues Dos Santos, Atsushi Miyabo, Shizuo Tokito
    Advanced Electronic Materials, vol. 9, pp: 2201040-2201046 (2023).
    【Selected Back Cover】
    https://doi.org/10.1002/aelm.202201040
  16. "Optimization of the blend ratio of soft functional polymers for high piezoelectric performance stretchable device"
    Keita Ito, Tomohito Sekine*, Yoshinori Shouji, Yi-Fei Wang, Yasunori Takeda, Daisuke Kumaki, Fabrice Domingues Dos Santos, Huang Tong, Atsushi Miyabo, Shizuo Tokito
    Applied Physics Express, vol 16, pp: 011004-011008 (2023).
    https://iopscience.iop.org/article/10.35848/1882-0786/acb3ac
  17. "Bottom gate top contact organic transistors using thiophene and furan flanked diketopyrrolopyrrole polymers and its comparative study"
    Thu-Trang Do, Yasunori Takeda, Tomohito Sekine, Yogesh Yadav, Sergei Manzhos, Krishna Feron, Samarendra P Singh, Shizuo Tokito*, Prashant Sonar*
    Flexible and Printed Electronics, vol. 7, pp: 035014-035020 (2022).
    https://iopscience.iop.org/article/10.1088/2058-8585/ac8887
  18. "Printed Low-Hysteresis Stretchable Strain Sensor Based on a Self-Segregating Conductive Composite"
    Ayako Yoshida, Yi-Fei Wang*, Tomohito Sekine, Yasunori Takeda, Daisuke Kumaki, Shizuo Tokito*
    ACS Applied Engineering Materials, vol. 1, pp: 50-58 (2022).
    https://doi.org/10.1021/acsaenm.2c00010
  19. "Printed, all-carbon-based flexible humidity sensor using a cellulose nanofiber/graphene nanoplatelet composite"
    Ayako Yoshida, Yi-Fei Wang, Shogo Tachibana, Ayuka Hasegawa, Tomohito Sekine*, Yasunori Takeda, Jinseo Hong, Daisuke Kumaki, Takeo Shiba, Shizuo Tokito*
    Carbon Trends, vol. 7 pp: 100166-100172 (2022).
    https://doi.org/10.1016/j.cartre.2022.100166
  20. "Optimization of a Soft Pressure Sensor in Terms of the Molecular Weight of the Ferroelectric‐Polymer Sensing Layer"
    Yushi Watanabe, Tomohito Sekine*, Reo Miura, Mai Abe, Yoshinori Shouji, Keita Ito, Yi-Fei Wang, Jinseo Hong, Yasunori Takeda, Daisuke Kumaki, Fabrice Domingues Dos Santos, Atsushi Miyabo, Shizuo Tokito*
    Advanced Functional Materials, vol. 32, pp: 2107434-2107441 (2022).
    【Selected Front Cover】
    https://doi.org/10.1002/adfm.202107434
  21. "A Printed Flexible Humidity Sensor with High Sensitivity and Fast Response Using a Cellulose Nanofiber/Carbon Black Composite"
    Shogo Tachibana, Yi-Fei Wang*, Tomohito Sekine, Yasunori Takeda, Jinseo Hong, Ayako Yoshida, Mai Abe, Reo Miura, Yushi Watanabe, Daisuke Kumaki, Shizuo Tokito*
    ACS Applied Materials & Interfaces, vol. 14, pp: 5721-5728 (2022).
    https://doi.org/10.1021/acsami.1c20918
  22. "Deep Eutectic Solvent Induced Porous Conductive Composite for Fully Printed Piezoresistive Pressure Sensor"
    Yi-Fei Wang*, Tomohito Sekine, Yasunori Takeda, Jinseo Hong, Ayako Yoshida, Daisuke Kumaki, Takeo Shiba, Shizuo Tokito*
    Advanced Materials Technologies, vol. 6, pp: 2100731-2100737 (2021).
    https://doi.org/10.1002/admt.202100731
  23. "Flexible printed temperature sensor with high humidity stability using bilayer passivation"
    Shogo Tachibana, Yi-Fei Wang*, Tomohito Sekine, Ayako Yoshida, Yasunori Takeda, Mai Abe, Reo Miura, Yushi Watanabe, Daisuke Kumaki, Shizuo Tokito*
    Flexible and Printed Electronics, vol. 6, pp: 034002-034008 (2021).
    https://iopscience.iop.org/article/10.1088/2058-8585/ac0fce/meta
  24. "Flexible and Printed Organic Nonvolatile Memory Transistor with Bilayer Polymer Dielectrics"
    Woojo Kim, Jimin Kwon, Yasunori Takeda, Tomohito Sekine, Shizuo Tokito*, Sungjune Jung*
    Advanced Materials Technologies, vol. 6, pp: 2100141-2100146 (2021).
    https://doi.org/10.1002/admt.202100141
  25. "Artificial Cutaneous Sensing of Object Slippage using Soft Robotics with Closed‐Loop Feedback Process"
    Tomohito Sekine*, Yi-Fei Wang, Jinseo Hong, Yasunori Takeda, Reo Miura, Yushi Watanabe, Mai Abe, Yoshiki Mori, Zhongkui Wang, Daisuke Kumaki, Fabrice Domingues Dos Santos, Atsushi Miyabo, Sadao Kawamura, Shizuo Tokito*
    Small Science, vol. 1, pp: 2100002-2100010 (2021).
    https://doi.org/10.1002/smsc.202100002
  26. "Printed Electronics-Enabled Wearable/Portable Physical and Chemical Sensors for Personal Digital Healthcare"
    Kuniaki Nagamine*, Tomohito Sekine*, Shizuo Tokito*
    Encyclopedia of Sensors and Biosensors, vol. 3, pp: 68-79 (2021).
    【Review Paper】
    https://doi.org/10.1016/B978-0-12-822548-6.00077-7
  27. "Fully Printed PEDOT:PSS-based Temperature Sensor with High Humidity Stability for Wireless Healthcare Monitoring"
    Yi-Fei Wang*, Tomohito Sekine, Yasunori Takeda, Koji Yokosawa, Hiroyuki Matsui, Daisuke Kumaki, Takeo Shiba, Takao Nishikawa, Shizuo Tokito*
    Scientific Reports, vol 10, pp: 2467-2474 (2020).
    https://doi.org/10.1038/s41598-020-59432-2
  28. "Microporous Induced Fully Printed Pressure Sensor for Wearable Soft Robotics Machine Interfaces"
    Tomohito Sekine*, Mai Abe, Kosuke Muraki, Shogo Tachibana, Yi-Fei Wang, Jinseo Hong, Yasunori Takeda, Daisuke Kumaki, Shizuo Tokito*
    Advanced Intelligent Systems, vol. 2, pp: 2000179-2000185 (2020).
    【Selected Back Cover】
    https://doi.org/10.1002/aisy.202000179
  29. "Printed Soft Sensor with Passivation Layers for the Detection of Object Slippage by a Robotic Gripper"
    Reo Miura, Tomohito Sekine*, Yi-Fei Wang, Jinseo Hong, Yushi Watanabe, Keita Ito, Yoshinori Shouji, Yasunori Takeda, Daisuke Kumaki, Fabrice Domingues Dos Santos, Atsushi Miyabo, Shizuo Tokito*
    Micromachines, vol. 11, pp: 927-935 (2020).
    https://doi.org/10.3390/mi11100927
  30. Reduced Threshold Voltages and Enhanced Mobilities in Diketopyrrolopyrrole-Dithienothiophene Polymer‐Based Organic Transistor by Interface Engineering
    Basanagouda B. Patil, Yasunori Takeda, Thu Trang Do, Amandeep Singh, Tomohito Sekine, Soniya D. Yambem, Shizuo Tokito, Samarendra P. Singh, Ajay K. Pandey, Prashant Sonar
    physica status solidi (a) 217(19) 2000097-2000097 2020年10月
  31. "Printed Strain Sensor with High Sensitivity and Wide Working Range Using a Novel Brittle-Stretchable Conductive Network"
    Yi-Fei Wang*, Tomohito Sekine, Yasunori Takeda, Jinseo Hong, Ayako Yoshida, Hiroyuki Matsui, Daisuke Kumaki, Takao Nishikawa, Takeo Shiba, Tadahiro Sunaga, Shizuo Tokito*
    ACS Applied Materials & Interfaces, vol. 12, pp: 35282-35290 (2020).
    https://doi.org/10.1021/acsami.0c09590
  32. "High-Speed Complementary Integrated Circuit with a Stacked Structure Using Fine Electrodes Formed by Reverse Offset Printing"
    Yasunori Takeda*, Tomohito Sekine, Yi-Fei Wang, Tomoko Okamoto, Hiroyuki Matsui, Daisuke Kumaki, Shizuo Tokito*
    ACS Applied Electronic Materials, vol. 2, pp: 763-768 (2020).
    【Selected Front Cover】
    https://doi.org/10.1021/acsaelm.9b00829
  33. "A multidimensional scheme of characterization for performance deterioration behavior of flexible devices under bending deformation"
    Shoji Kamiya*, Hayato Izumi, Tomohito Sekine, Nobuyuki Shishido, Hiroko Sugiyama, Yasuko Haga, Takeo Minari, Masaaki Koganemaru, Shizuo Tokito
    Thin Solid Films, vol. 694, pp: 137613-137619 (2020).
    https://doi.org/10.1016/j.tsf.2019.137613
  34. "Ferroelectric polymer-based fully printed flexible strain rate sensors and their application for human motion capture"
    Jun Sato, Tomohito Sekine*, Wang Yi-Fei, Yasunori Takeda, Hiroyuki Matsui, Daisuke Kumaki, Fabrice Domingues Dos Santos, Atsushi Miyabo, Shizuo Tokito*
    Sensors and Actuators A: Physical, vol. 295, pp: 93-98 (2019).
    https://doi.org/10.1016/j.sna.2019.05.022
  35. "Printed low-voltage-operating organic thin-film transistors using high-k and paraelectric polymers"
    Tomohito Sekine*, Tomoya Tashiro, Yasunori Takeda, Daisuke Kumaki, Fabrice Domindues Dos Santos, Atsushi Miyabo, Shizuo Tokito*
    Japanese Journal of Applied Physics, vol. 58, pp: 080906-080910 (2019).
    https://iopscience.iop.org/article/10.7567/1347-4065/ab3032
  36. "Synthesis and Deformable Hierarchical Nanostructure of Intrinsically Stretchable ABA Triblock Copolymer Composed of Poly(3-hexylthiophene) and Polyisobutylene Segments"
    Tomoya Higashihara*, Seijiro Fukuta, Yuto Ochiai, Tomohito Sekine, Keisuke Chino, Tomoyuki Koganezawa, Itaru Osaka*
    ACS Applied Polymer Materials, vol. 1, pp: 315-320 (2019).
    https://doi.org/10.1021/acsapm.8b00087
  37. "Low Operating Voltage and Highly Pressure-Sensitive Printed Sensor for Healthcare Monitoring with Analogic Amplifier Circuit"
    Tomohito Sekine*, Alexandre Gaı̈tis, Jun Sato, Kohei Miyazawa, Kosuke Muraki, Rei Shiwaku, Yasunori Takeda, Hiroyuki Matsui, Daisuke Kumaki, Fabrice Domingues Dos Santos, Atsushi Miyabo, Micaël Charbonneau, Shizuo Tokito*
    ACS Applied Electronic Materials, vol. 1, pp: 246-252 (2019).
    【Selected Front Cover】
    https://doi.org/10.1021/acsaelm.8b00088
  38. "An Organic FET with an Aluminum Oxide Extended Gate for pH Sensing"
    Tsukuru Minamiki, Tomohito Sekine, Michio Aiko, Shiwei Su, Tsuyoshi Minami*
    Sensors and Materials, vol. 31, pp: 99-106 (2019).
    https://doi.org/10.18494/SAM.2019.2082
  39. "A Fully Printed Ultra-Thin Charge Amplifier for On-Skin Biosignal Measurements"
    Mika-Matti Laurila, Hiroyuki Matsui, Rei Shiwaku, Mikko Peltokangas, Jarmo Verho, Karem Lozano Montero, Tomohito Sekine, Antti Vehkaoja, Niku Oksala, Shizuo Tokito, Matti Mantysalo*
    IEEE Journal of the Electron Devices Society, vol. 7 pp: 566-574 (2019).
    https://ieeexplore.ieee.org/document/8706537
  40. "Fully Printed Wearable Vital Sensor for Human Pulse Rate Monitoring using Ferroelectric Polymer"
    Tomohito Sekine*, Ryo Sugano, Tomoya Tashiro, Jun Sato, Yasunori Takeda, Hiroyuki Matsui, Daisuke Kumaki, Fabrice Domingues Dos Santos, Atsushi Miyabo, Shizuo Tokito*
    Scientific Reports, vol. 8, Article ID. 4442 (2018).
    【Top 100 in Materials Science of Scientific Reports】
    https://www.nature.com/articles/s41598-018-22746-3
  41. "Printed Organic Complementary Inverter with Single SAM Process Using a p-type D-A Polymer Semiconductor"
    Yasunori Takeda*, Tomohito Sekine, Rei Shiwaku, Tomohide Murase, Hiroyuki Matsui, Daisuke Kumaki, Shizuo Tokito*
    Applied Sciences, vol. 8, pp: 1331-1339 (2018).
    https://doi.org/10.3390/app8081331
  42. "Switching Time in Ferroelectric Organic Field‐Effect Transistors"
    Ryo Sugano, Tomoya Tashiro, Tomohito Sekine*, Hiroyuki Matsui, Daisuke Kumaki, Fabrice Domingues Dos Santos, Atsushi Miyabo, Shizuo Tokito*
    physica status solidi (a), vol. 215, pp: 1701059-1701064 (2018).
    https://doi.org/10.1002/pssa.201701059
  43. "Morphological Behavior of Printed Silver Electrodes with Protective Self-Assembled Monolayers for Electrochemical Migration"
    Tomohito Sekine*, Jun Sato, Yasunori Takeda, Daisuke Kumaki, Shizuo Tokito*
    ACS Applied Materials & Interfaces, vol. 10, pp: 16210-16215 (2018).
    https://doi.org/10.1021/acsami.8b02996
  44. "Organic Complementary Inverter Circuits Fabricated with Reverse Offset Printing"
    Yasunori Takeda, Yudai Yoshimura, Rei Shiwaku, Kazuma Hayasaka, Tomohito Sekine, Tomoko Okamoto, Hiroyuki Matsui*, Daisuke Kumaki, Yoshinori Katayama, Shizuo Tokito*
    Advanced Electronic Materials, vol. 4, pp: 1700313-1700317 (2018).
    https://doi.org/10.1002/aelm.201700313
  45. "Development of a silver nanoparticle ink for fine line patterning using gravure offset printing"
    Shiokawa Daisuke, Izumi Konami, Sugano Ryo, Sekine Tomohito, Minami Tsuyoshi, Kumaki Daisuke, Tokito Shizuo*
    Japanese Journal of Applied Physics, vol. 56, Article ID. 5S2 (2017).

    https://iopscience.iop.org/article/10.7567/JJAP.56.05EA04
  46. "Mechanical Fatigue Behavior of Flexible Printed Organic Thin-Film Transistors under Applied Strain"
    Tomohito Sekine*, Daisuke Kumaki, Shizuo Tokito*
    Materials, vol. 10, pp: 18-26 (2016).
    https://doi.org/10.3390/ma10010018
  47. "Ultrathin flexible memory devices based on organic ferroelectric transistors"
    Ryo Sugano, Yoshinori Hirai, Tomoya Tashiro, Tomohito Sekine, Kenjiro Fukuda, Daisuke Kumaki, Fabrice Domingues dos Santos, Atsushi Miyabo, Shizuo Tokito*
    Japanese Journal of Applied Physics, vol. 55, Article ID. 10TA04 (2016).
    https://iopscience.iop.org/article/10.7567/JJAP.55.10TA04
  48. "Fully printed and flexible ferroelectric capacitors based on a ferroelectric polymer for pressure detection"
    Tomohito Sekine*, Ryo Sugano, Tomoya Tashiro, Kenjiro Fukuda, Daisuke Kumaki, Fabrice Domingues Dos Santos, Atsushi Miyabo, Shizuo Tokito*
    Japanese Journal of Applied Physics, vol. 55, Article ID. 10TA18 (2016).
    https://iopscience.iop.org/article/10.7567/JJAP.55.10TA18
  49. "The effect of mechanical strain on contact resistance in flexible printed organic thin-film transistors"
    Tomohito Sekine*, Kenjiro Fukuda, Daisuke Kumaki, Shizuo Tokito*
    Flexible and Printed Electronics, vol. 1, pp: 035005-035012 (2016).
    【Selected Featured Paper of Flexible and Printed Electronics 2016】
    https://iopscience.iop.org/article/10.1088/2058-8585/1/3/035005
  50. "Free-Standing Organic Transistors and Circuits with Sub-Micron Thicknesses"
    Kenjiro Fukuda*, Tomohito Sekine, Rei Shiwaku, Takuya Morimoto, Daisuke Kumaki, Shizuo Tokito*
    Scientific Reports, vol. 6, Article ID. 27450 (2016).
    https://www.nature.com/articles/srep27450
  51. "Enhanced memory characteristics in organic ferroelectric field-effect transistors through thermal annealing"
    Ryo Sugano, Tomoya Tashiro, Tomohito Sekine, Kenjiro Fukuda, Daisuke Kumaki, Shizuo Tokito*
    AIP Advances, vol. 5, pp: 117106-117112 (2015).
    https://doi.org/10.1063/1.4935342
  52. "Enhanced adhesion mechanisms between printed nano-silver electrodes and underlying polymer layers"
    Tomohito Sekine, Kenjiro Fukuda*, Daisuke Kumaki, Shizuo Tokito
    Nanotechnology, vol. 26, pp: 321001-321008 (2015).
    https://iopscience.iop.org/article/10.1088/0957-4484/26/32/321001
  53. "Highly stable flexible printed organic thin-film transistor devices under high strain conditions using semiconducting polymers"
    Tomohito Sekine*, Kenjiro Fukuda, Daisuke Kumaki, Shizuo Tokito*
    Japanese Journal of Applied Physics, vol. 54, Article ID. 04DK10 (2015).
    https://iopscience.iop.org/article/10.7567/JJAP.54.04DK10
  54. "Fully-printed high-performance organic thin-film transistors and circuitry on one-micron-thick polymer films"
    Kenjiro Fukuda*, Yasunori Takeda, Yudai Yoshimura, Rei Shiwaku, Lam Truc Tran, Tomohito Sekine, Makoto Mizukami, Daisuke Kumaki, Shizuo Tokito*
    Nature Communications, vol. 5, Article ID. 4147 (2014).
    https://www.nature.com/articles/ncomms5147
  55. "Improvement of mechanical durability on organic TFT with printed electrodes prepared from nanoparticle ink"
    Tomohito Sekine*, Hideaki Ikeda, Akifumi Kosakai, Kenjiro Fukuda, Daisuke Kumaki, Shizuo Tokito*
    Applied Surface Science, vol. 294, pp: 20-23 (2014).
    https://doi.org/10.1016/j.apsusc.2013.12.168
  56. "An extended-gate type organic field effect transistor functionalised by phenylboronic acid for saccharide detection in water"
    Tsuyoshi Minami*, Tsukuru Minamiki, Yuki Hashima, Daisuke Yokoyama, Tomohito Sekine, Kenjiro Fukuda, Daisuke Kumaki, Shizuo Tokito*
    Chemical Communications, vol. 50, pp: 15613-15615 (2014).
    https://doi.org/10.1039/C4CC07498J
  57. Strain sensitivity and durability in p-type and n-type organic thin-film transistors with printed silver electrodes
    Kenjiro Fukuda, Kenta Hikichi, Tomohito Sekine, Yasunori Takeda, Tsukuru Minamiki, Daisuke Kumaki, Shizuo Tokito
    Scientific Reports 3(1) 2013年12月
  58. "Profile Control of Inkjet Printed Silver Electrodes and Their Application to Organic Transistors"
    Kenjiro Fukuda*, Tomohito Sekine, Daisuke Kumaki, Shizuo Tokito*
    ACS Applied Materials & Interfaces, vol. 5, pp: 3916-3920 (2013).
    https://doi.org/10.1021/am400632s
  59. "Patterning Method for Silver Nanoparticle Electrodes in Fully Solution-Processed Organic Thin-Film Transistors Using Selectively Treated Hydrophilic and Hydrophobic Surfaces"
    Kenjiro Fukuda*, Yasunori Takeda, Yu Kobayashi, Masahiro Shimizu, Tomohito Sekine, Daisuke Kumaki, Masato Kurihara, Masatomi Sakamoto, Shizuo Tokito*
    Japanese Journal of Applied Physics, vol. 52, Article ID. 05DB05 (2013).
    https://iopscience.iop.org/article/10.7567/JJAP.52.05DB05
  60. "Organic integrated circuits using room-temperature sintered silver nanoparticles as printed electrodes"
    Kenjiro Fukuda*, Tomohito Sekine, Yu Kobayashi, Yasunori Takeda, Masahiro Shimizu, Naoya Yamashita, Daisuke Kumaki, Mitsunori Itoh, Minami Nagaoka, Takami Toda, Sayaka Saito, Masato Kurihara, Masatomi Sakamoto, Shizuo Tokito*
    Organic Electronics, vol. 13, pp: 3296-3301 (2012).
    https://doi.org/10.1016/j.orgel.2012.09.028
  61. "Stable organic thin-film transistors using full solution-processing and low-temperature sintering silver nanoparticle inks"
    Kenjiro Fukuda*, Tomohito Sekine, Yu Kobayashi, Daisuke Kumaki, Mitsunori Itoh, Minami Nagaoka, Takami Toda, Sayaka Saito, Masato Kurihara, Masatomi Sakamoto, Shizuo Tokito*
    Organic Electronics, vol. 13, pp: 1660-1664 (2012).
    https://doi.org/10.1016/j.orgel.2012.05.016
  62. "Applied Voltage Dependence of Carbon Radical in Electric Double Layer Capacitor Measured by in situ ESR Spectroscopy and AC Cyclic Voltammetry"
    ITO Tomohiro*, KOBAYASHI Masakatsu, YOSHIDA Mayumi, SEKINE Tomohito, TACHIBANA Kazuhiro, NISHINA Tatsuo, OGATA Tateaki*
    Electrochemistry, vol. 78, pp: 390-392 (2010).
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