• 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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Articles
The article written by Professor SHIBA, Resercher YOKOSAWA, Professor NISHIKAWA and Professor TOKITO was released as special feature article titled "Advanced mounting technology in the IoT / 5G era" on Journal of The Japan Institute of Electronics Packaging Vol.22 No.7 Nov. 2019 (591-636).

Invited Lecture
Professor Tokito gave a keynote speech at Japan MID Association (Institute of Industrial Science. The University of Tokyo) on Nov.1

Member
Mr. Mikio Masuichi has joined our laboratory as a Professor.

Member
Ms. Yumiko Ishizuka has joined our labolatory as a Technical Assistant.

Press
The ultra-thin sensor jointly developed by Tokito-Kumaki-Sekine Labs and ND Software was published under the title of "Developed and commercialized the ultra-thin sheet for measuring heart rate while sleeping by Yamagata University." in the Asahi Shimbun DIGITAL on Oct.29.

Press
The ultra-thin sensor jointly developed by Tokito-Kumaki-Sekine Labs and ND software was published under the title of "Development of thickness 0.5 mm sheet type sensor laid under mattress. For heart rate and respiration measurement" in the Asahi Shimbun Yamagata Edition on Oct.29.

Press
The ultra-thin sensor jointly developed by Tokito, Kumaki, and Sekine Labs and ND Software was published under the title of "To sell nursing care systems" in the Yomiuri Shimbun reginal edition on Oct.24.

Invited Lecture
Professor Tokito gave an invited talk at The 98th Anniversary Ceremony of Yonezawa Medical Center. (2nd floor lecture hall of the Medical Center) on Oct 24.

Member
Ms. Hiroe Otomo has joined our labolatory as a Technical Assistant.

Invited Lecture
Professor Tokito gave an invited talk at Electronics Exchange Meeting of Electronic Information Technology Subcommittee (Chiyoda ward, Tokyo) held by Japan Association for Chemical Innovation (JACI) on Oct.11.

Press
The ultra-thin sensor jointly developed by Tokito-Kumaki-Sekine Labs and ND Software was published under the title of "Changes in care recipients "care guard"" in Yamagata Newspaper and Yamagata News Online on Oct. 10.

Press
The ultra-thin sensor jointly developed by Tokito-Kumaki-Sekine Labs and ND Software was published under the title of "Development of thin sensors for nursing care by Yamagata University and others, sheet-like heart rate and respiratory measurement" in the Nihon Keizai Shimbun WEB version (Regional Economy) on Oct. 9.

Press
The ultra-thin sensor jointly developed by Tokito-Kumaki-Sekine Labs and ND Software was published under the title of "Development of thin sensors for nursing care by Yamagata University and others" on the Nihon Keizai Shimbun WEB version (Hokkaido and Tohoku)

Press
The ultra-thin sensor jointly developed by Tokito-Kumaki-Sekine Lab and ND Software was published under the title of "0.5 mm thin sensor for heart rate catching. Adopted for “care guard” by the companies of Yamagata pref. to reduce the burden on both caregivers and cared persons in the FNN Prime Online Regional News on Oct. 9.

Press
The ultra-thin sensor jointly developed by Tokito-Kumaki-Sekine Labs and ND Software was published under the titled of "To release ultra-thin sheet sensor developed by Yamagata University" in the YTS Yamagata TV YTS News of the web version on Oct. 9.

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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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