• Organic Semiconductor Materials

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  • Flexible Devices with Printed Organic and Nanoparticle Materials

    We have developed flexible electronic devices on ultrathin (< 3 µm) plastic films by employing advanced printing technologies together with organic semiconductors, ferroelectric polymers, and metal nanoparticle inks. Our objective is to realize patch-type healthcare devices using the ultra-flexible sensor devices.
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  • Development of the OFET-Based Biosensors

    We have developed printed OFET-based biosensors that are fully flexible, and are currently striving to apply these sensors in the non-invasive detection healthcare biomarkers in externally secreted bodily fluids including sweat and saliva.
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  • Flexible and Stretchable Printed Physical Sensors

    We are developing flexible or stretchable physical sensors that employ ferroelectric polymers and stretchable paste inks applied using conventional printing methods. Our aim to utilize these devices in robot skins, healthcare, tactile sensors and other novel applications.
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  • Flexible Hybrid Electronics

    Organic thermal sensors and stacked interconnects are printed on plastic film substrates using conventional screen printing, and to which thin, small Si-LSI chips are mounted. This hybrid sensor combines the flexibility of organic electronics with the highly functional of silicon electronics. Using these devices, we have succeeded in measuring skin temperature and monitoring the temperature of commercial products, while wirelessly transmitting the data.
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  • Reverse Offset Printing

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  • 3D-Printed Electronics

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  • Development of the Metal Nanoparticle Ink

    We are developing metal nanoparticle ink that can be sintered at low-temperature to create high-performance printed TFT devices. We achieved a reduction of the energy barrier between semiconductor and electrodes by improving the nanoparticle design and ink formulation technology.
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  • Development of the Large Area Printing Processes

    We have developed the roll-to-roll inkjet printing process technology that can be applied to the fabrication of large-area, high-definition electronic circuits. With this technology, TFT arrays and sensor devices can be continuously fabricated directly on the wide-format film rolls.
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Invited Lecture
Clay Shepherd , the visiting professor of our laboratory ,will give an invited speech at Virtual FLEX Conference & Exhibition 2021( Virtual via the Zoom platform combined with the networking platform Swap Card ) on February 24.

Result
A joint research paper related to the visiting professor Isao Shitanda of Tokyo University of Science and our laboratory titled "Paper-based Lactate Biofuel Cell Array with High Power Output" was published in Journal of Power Sources.

Result
A paper related to Sukuru Minamiki (who is in National Institute of Advanced Industrial ScienceTechnology and graduated from our laboratory )and Professor Tokito titled "Flexible organic thin-film transistor immunosensor printed on a one-micron-thick film” was published in Communications Materials .

Result
A paper related to Yuki Maruyama(D2) titled " A heat-melt adhesive-assisted transferable electrode films " was published in Journal of scientific reports.

News
The research result of the seat sensor was posted in the web media "EMIRA".

Lecture
March 1, 2021 (Monday) 13: 00-17: 45 , a lecture related to Professor Tokito at Japan Society for the Promotion of Science Thin Film 131st Committee・R025 Advanced Thin Film Interface Function Creation Committee titled " Health management and medical application of printed organic sensors that contribute to the realization of Society 5.0" will be held on the web.

Lecture
A requested lecture was held on the web by Professor Tokito, Assistant Professor Takeda, and Associate Professor Yoshida at the Printable Wearable Study Group On December 17 .

Presentation
The state of the exhibition of our laboratory at the JFlex2021 will be reported by LIVE from 15:00 to 16:30 on December 9 .

News
Dr. Gábor has joined to Tokito group as an assistant professor on December 1.

News
A research result related to seat sensor is displaying in the lobby on the 1st floor of Yonezawa City Hall.

Funding
A research subject related to Assistant Professor Sekine(Research Representative) titled " Creation of Soft Robotics Tactile Sensor by Polymer nanocomposites" was adopted to ATI Research Grant by Foundation Advanced Technology Institute. Congratulations!

Funding
A research subject related to Assistant Professor Sekine(Research Representative) titled "Development of Stretchable Acceleration Sensor for Robot skin in order to match Industry4.0" was adopted to A-STEP Tryout by Japan Science and Technology Agency(JST). Congratulations!

Award
Assistant Professor Sekine was received the 9th New Chemical Technology Encouraging Award related to a research of Electronics Materials which support smart society "A development of biomimetic printing skin device for efficient acquisition of cyber data"

Result
A paper related to Assistant Professor Sekine and Ms.Abe(M1) titled "Microporous Induced Fully Printed Pressure Sensor for Wearable Soft Robotics Machine Interfaces" was published in Advanced Intelligent Systems.

Result
A paper related to Mr.Miura (M1) and Assistant Professor Sekine titled "Printed Soft Sensor with Passivation Layers for the Detection of Object Slippage by a Robotic Gripper" was published in Micromachines(MDPI).

More NEWS    More RESEARCH RESULTS

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【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

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