• 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
Professor Tokito will give an invited talk at IMID 2019 (HICO, Gyeongju, Korea) from Aug. 28.

Invited Lecture
Professor Tokito will give an invited talk at KFPE (Korea Flexible & Printed Electronics Society) 2019 (RAMADA PLAZA JEJU HOTEL, Korea) on Sep. 2.

Invited Lecture
Professor Tokito will give an invited talk at Sensor・Actuator・Micro-nano / week 2019 Symposium (Tokyo Big Sight) on Sep 11.

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

Invited Lecture
Professor Tokito will give an invited talk at Japan MID Association (Institute of Industrial Science. The University of Tokyo) on Nov.1

Events
Professor Yuichi Inoue (Tokyo Medical University) gave a lecture as a Guest Speaker at The 167th ROEL Lecture Session on Aug 22.

Award
D2 student, Kai Sasaki, was awarded with Student Presentation Award of 10th International Conference on Molecular Electronics & BioElectronics, 2019. Congratulations!

Articles
10 commentary articles written by Tokito Lab staffs were published in the magazine named "Clean Technology" issued by JAPAN INDUSTRIAL PUBLISHING CO., LTD. in August (Vol.29 No.8) as the cover story of "Printed device technology".

Invited Lecture
Professor Tokito gave an invited talk at IEEE IFETC 2019 (Simon Fraser University’s Harbour Centre ,Vancouver, BC, Canada) from Aug 11 to 14.

Articles
An review article written by Professor Tokito, titled "Progress of Flexible Printed Organic Electronics" was published by Journal of the society of Photography and imaging of Japan (2019, Vol.56, No.3, p124-130).

Invited Lecture
Professor Tokito gave a Keynote speech at 17th Forum of Young Scientists (Saitama Institute of Technology in Fukaya city Saitama prefecture) on Aug 5.

Invited Lecture
Professor Tokito gave an invited talk at 14th 有機デバイス・物性院生研究会. (Univ. of Tokyo Hongo campus) on Aug. 2.

Invited Lecture
Professor Tokito gave an invited talk at 2nd PRINTED ELECTORONICS ASSOCIATION (Osaka・Nakanoshima: Osaka University Nakanoshima Center, Saji Keizo Memorial Hall) on July 19.

Member
Mr. Takuya Kamba has joined our laboratory as a Visiting Researcher.

Result
A paper related to Associate Professor Nagamine, "Noninvasive Sweat-Lactate Biosensor Employing a Hydrogel-Based Touch Pad” was published on Scientific Reports.

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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