• Laboratory Research Domains

    top-leftto-bottom
  • Organic Semiconductor Materials, Devices & Circuits

    Developing new p-type and n-type organic semiconductor materials in collaboration with industry companies, fabricating and characterizing OTFT devices and circuits using synthesized inks and printing methods such as the inkjet method.
    top-leftto-bottom
  • Flexible and Stretchable Printed Physical Sensors

    Developing physical sensors that are printable, flexible, and highly sensitive. Objective is to realize sensors suitable for robots and healthcare by manufacturing flexible sensors and stretchable sensors that detect stress generated by pressure, bending, and tension.
    top-leftto-bottom
  • Flexible Hybrid Electronics

    Prototyping hybrid (FHE) sensors that are wearable and combine the flexibility of organic electronics with the high performance and functionality of Si-LSI while wirelessly transmitting sensor data.
    top-leftto-bottom
  • Ultra-Fine Printing Technologies

    Developing conductive inks suitable for use with reverse-offset printing, evaluating the functionality of OTFT electrodes and interconnects through printing experiments, and developing integrated circuit manufacturing processes.
    top-leftto-bottom
  • Development of the Metal Nanoparticle Ink

    Developing low-temperature sintered metal nanoparticle inks to improve the performance of printed TFT devices, with advanced particle designs and ink technology to reduce interconnect layer widths and the energy barrier with the semiconductor layer.
    top-leftto-bottom
  • Large-Area Sensor Technologies

    Developing large-area sensors that can continuously and unobtrusively measure vital signals such as heartbeat and respiration, and body movements. Thin, flexible sensors easily installable in beds, and employable in elderly care facilities or home care settings.
    top-leftto-bottom
  • Robotic Sensing Technologies

    Mounting flexible sensors on the robotic gripper hand, building a system linked with IoT networks to significantly improve safety and work efficiency, and create new application fields. By adding a tactile function to the grip, its gripping force can be controlled.
    top-leftto-bottom


  • top-leftto-bottom
New papers

Result
A paper titled 'Advancing Robotic Gripper Control with the Integration of Flexible Printed Pressure Sensors' authored by Project Associate Professor Yasunori Takeda and Project Assistant Professor Yi-Fei Wang, has been published in Advanced Engineering Materials (IF: 3.6).

Result
A paper titled 'printing pressure optimization in reverse offset printing for micrograting fabrication' authored by Doctoral Course student Hayato KOMATSU and Project Associate Professor Yasunori Takeda, has been published in Japanese Journal of Applied Physics (IF: 1.5).

Events
We showcased our latest results on printed flexible sensors at 'WELL-BEING TECHNOLOGY 2024' held at Tokyo Big Sight from January 31, 2024. Thank you to everyone who visited our booth.

Result
A paper titled 'Printed Composite Film with Microporous/ Micropyramid Hybrid Conductive Architecture for Multifunctional Flexible Force Sensor' authored by Project Assistant Professor Yi-Fei Wang and B4 student Junya Yoshida, has been published in Nanomaterials (IF: 5.3).

Result
A paper titled 'Blood Oxygen and Heart Rate Monitoring by a Flexible Hybrid Electronics Device Fabricated by Multilayer Screen-Printing,' authored by Project Associate Professor Ayako Yoshida, has been published in Advanced Electronics Materials (IF: 6.2).

News
A paper titled 'Printed Composite Film with Microporous/ Micropyramid Hybrid Conductive Architecture for Multifunctional Flexible Force Sensor' by Project Assistant Professor Yi-Fei Wang and B4 student Junya Yoshida, has been accepted by Nanomaterials (IF: 5.3).

News
Our research on the Printed FHE (Flexible Hybrid Electronics) SpO2 sensor received the Best Poster Award at the MRS 2023 Fall Meeting (Boston, USA).

News
On November 29th, 2023, Project Assistant Professor Yi-Fei Wang delivered a talk titled 'Advancing High-Performance Printed Soft Mechanical Sensors Through Microstructure Control of Conductive Composites' at the MRS 2023 Fall Meeting in Boston, US.

News
A paper titled 'Blood Oxygen and Heart Rate Monitoring by a Flexible Hybrid Electronics Device Fabricated by Multilayer Screen-Printing,' by Project Associate Professor Ayako Yoshida, has been accepted by Advanced Electronics Materials (IF: 6.2).

Invited Lecture
On October 27th, 2023, Project Assistant Professor Yi-Fei Wang delivered an invited talk titled 'Flexible Printed Sensor System for Healthcare and Robotic Applications' at the 13th International Conference on Flexible and Printed Electronics (ICFPE 2023) in Chengdu, China.

News
On Tuesday, October 3, 2023, Naoji Matsuhisa, an Associate Professor at the Research Center for Advanced Science and Technology, University of Tokyo, delivered an online webinar on "Next-generation Interfaces Using Stretchable Electronics." This informative seminar was organized by the Tokito Laboratory and the Soft Sensing Industry-Academia Collaboration Consortium.

News
The 84th Japan Society of Applied Physics Autumn Academic Conference, held in Kumamoto from September 19th to September 21st, featured nine oral presentations and three poster presentations. For detailed research results, please refer to the conference materials.

News
The paper titled "A Flexible, 2.4-GHz Wireless Ion Sensor System Using Printed Organic Amplifiers with a 3-V Single Supply," authored by researcher Shiwaku at Tosoh Corporation, a collaborative research company, has been published in Advanced Electronic Materials, which boasts an impressive Impact Factor of 7.63.

Presentation
At the 33rd Microelectronics Symposium hosted by Daido University, an oral presentation was given by Associate Project Professor Yoshida on the "Development of an FHE Wireless Communication Sea Route using Screen Printing" (Presentation number: 8C1-2).

Presentation
At the 33rd Microelectronics Symposium hosted by Daido University, Associate Professor Sekine delivered an oral presentation titled "Development of a Soft Pressure Sensor using Layered Carbon Materials" (Presentation number: 8C1-1).

More NEWS    More RESEARCH RESULTS

  • Photos
  • Movie
【Tokito, Office】
4-3-16 Jonan, Yonezawa, Yamagata
992-8510, JAPAN
YAMAGATA UNIVERSITY
Research Center for Organic Electronics (Bldg. 10)
Phone:+81-238-26-3725
Fax:+81-238-26-3788

PAGETOP