研究者業績

甚野 裕明

ジンノ ヒロアキ  (HIroaki Jinno)

基本情報

所属
国立研究開発法人宇宙航空研究開発機構 宇宙科学研究所 宇宙機応用工学研究系 助教
東京大学 大学院工学系研究科 電気系工学専攻 助教(委嘱)

連絡先
jinno.hiroakijaxa.jp
ORCID ID
 https://orcid.org/0000-0003-0998-6489
J-GLOBAL ID
202001004947842481
researchmap会員ID
R000009195

外部リンク

学歴

 2

委員歴

 1

論文

 17
  • Hiroaki Jinno, Sunil B Shivarudraiah, Rasmussen Asbjörn, Gianluca Vagli, Tommaso Marcato, Felix Thomas Eickemeyer, Lukas Pfeifer, Tomoyuki Yokota, Takao Someya, Chih‐Jen Shih
    Advanced Materials 2023年9月  査読有り
  • Erfan Shirzadi, Fatemeh Ansari, Hiroaki Jinno, Shun Tian, Olivier Ouellette, Felix. T. Eickemeyer, Brian Carlsen, Antoine Van Muyden, Hiroyuki Kanda, Naoyuki Shibayama, Farzaneh Fadaei Tirani, Michael Grätzel, Anders Hagfeldt, Mohammad Khaja Nazeeruddin, Paul J. Dyson
    ACS Energy Letters 3955-3961 2023年8月29日  査読有り
  • Hiroaki Jinno, Tomoyuki Yokota, Mari Koizumi, Wakako Yukita, Masahiko Saito, Itaru Osaka, Kenjiro Fukuda, Takao Someya
    Nature Communications 2021年4月14日  査読有り
  • Astrid Armgarth, Sandra Pantzare, Patrik Arven, Roman Lassnig, Hiroaki Jinno, Erik O. Gabrielsson, Yonatan Kifle, Dennis Cherian, Theresia Arbring Sjostrom, Gautier Berthou, Jim Dowling, Takao Someya, J. Jacob Wikner, Goran Gustafsson, Daniel T. Simon, Magnus Berggren
    SCIENTIFIC REPORTS 11(1) 2021年4月  
  • Md Osman Goni Nayeem, Sunghoon Lee, Hanbit Jin, Naoji Matsuhisa, Hiroaki Jinno, Akihito Miyamoto, Tomoyuki Yokota, Takao Someya
    PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 117(13) 7063-7070 2020年3月  査読有り
  • Ren Shidachi, Hiroaki Jinno, Sunghoon Lee, Tomoyuki Yokota, Takao Someya
    ACS APPLIED ELECTRONIC MATERIALS 1(7) 1054-1058 2019年7月  査読有り
  • Hiroki Kimura, Kenjiro Fukuda, Hiroaki Jinno, Sungjun Park, Masahiko Saito, Itaru Osaka, Kazuo Takimiya, Shinjiro Umezu, Takao Someya
    ADVANCED MATERIALS 31(19) 2019年5月  査読有り
  • David D. Ordinario, Hiroaki Jinno, Md Osman Goni Nayeem, Yutaro Tachibana, Tomoyuki Yokota, Takao Someya
    ADVANCED OPTICAL MATERIALS 6(22) 2018年11月  査読有り
  • Sungjun Park, Soo Won Heo, Wonryung Lee, Daishi Inoue, Zhi Jiang, Kilho Yu, Hiroaki Jinno, Daisuke Hashizume, Masaki Sekino, Tomoyuki Yokota, Kenjiro Fukuda, Keisuke Tajima, Takao Someya
    NATURE 561(7724) 516-+ 2018年9月  査読有り
    Next-generation biomedical devices(1-9) will need to be self-powered and conformable to human skin or other tissue. Such devices would enable the accurate and continuous detection of physiological signals without the need for an external power supply or bulky connecting wires. Self-powering functionality could be provided by flexible photovoltaics that can adhere to moveable and complex three-dimensional biological tissues(1-4) and skin(5-9). Ultra-flexible organic power sources(10-13) that can be wrapped around an object have proven mechanical and thermal stability in long-term operation(13), making them potentially useful in human-compatible electronics. However, the integration of these power sources with functional electric devices including sensors has not yet been demonstrated because of their unstable output power under mechanical deformation and angular change. Also, it will be necessary to minimize high-temperature and energy-intensive processes(10,12) when fabricating an integrated power source and sensor, because such processes can damage the active material of the functional device and deform the few-micrometre-thick polymeric substrates. Here we realize self-powered ultra-flexible electronic devices that can measure biometric signals with very high signal-to-noise ratios when applied to skin or other tissue. We integrated organic electrochemical transistors used as sensors with organic photovoltaic power sources on a one-micrometre-thick ultra-flexible substrate. A high-throughput room-temperature moulding process was used to form nano-grating morphologies (with a periodicity of 760 nanometres) on the charge transporting layers. This substantially increased the efficiency of the organophotovoltaics, giving a high power-conversion efficiency that reached 10.5 per cent and resulted in a high power-per-weight value of 11.46 watts per gram. The organic electrochemical transistors exhibited a transconductance of 0.8 millisiemens and fast responsivity above one kilohertz under physiological conditions, which resulted in a maximum signal-to-noise ratio of 40.02 decibels for cardiac signal detection. Our findings offer a general platform for next-generation self-powered electronics.
  • Sungjun Park, Kenjiro Fukuda, Ming Wang, Chulhyo Lee, Tomoyuki Yokota, Hanbit Jin, Hiroaki Jinno, Hiroki Kimura, Peter Zalar, Naoji Matsuhisa, Shinjiro Umezu, Guillermo C. Bazan, Takao Someya
    ADVANCED MATERIALS 30(34) 2018年8月  査読有り
    Flexible organic optoelectronic devices simultaneously targeting mechanical conformability and fast responsivity in the near-infrared (IR) region are a prerequisite to expand the capabilities of practical optical science and engineering for on-skin optoelectronic applications. Here, an ultraflexible near-IR responsive skin-conformal photoplethysmogram sensor based on a bulk heterojunction photovoltaic active layer containing regioregular polyindacenodithiophene-pyridyl[2,1,3]thiadiazole-cyclopentadithiophene (PIPCP) is reported. The ultrathin (3 mu m thick) photodetector exhibits unprecedented operational stability under severe mechanical deformation at a bending radius of less than 3 mu m, even after more than 10(3) bending cycles. Deliberate optimization of the physical dimensions of the active layer used in the device enables precise on/off switching and high device yield simultaneously. The response frequency over 1 kHz under mechanically deformed conditions facilitates conformal electronic sensors at the machine/human interface. Finally, a mechanically stretchable, flexible, and skin-conformal photoplethysmogram (PPG) device with higher sensitivity than those of rigid devices is demonstrated, through conformal adherence to the flexuous surface of a fingerprint.
  • Ren Shidachi, Naoji Matsuhisa, Peter Zalar, Philip C. Y. Chow, Hiroaki Jinno, Tomoyuki Yokota, Takao Someya
    PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS 12(6) 2018年6月  査読有り
    In this paper, the amplification of the photocurrent in organic phototransistors (OPTs) employing bulk heterojunctions (BHJs) with different donor-acceptor ratios has been studied. As a model system, poly[2-methoxy-5-(3',7'-dimethyloctyloxy)-p-phenylene vinylene] (OC1C10-PPV) and [6,6]-phenyl-C-61-butyric acid methyl ester (PCBM) are used as donor and acceptor, respectively, combined with Al contact. It is found that for OPTs the mobility of the majority carrier is the dominating factor for maximizing the photocurrent. This is different from organic photodiodes (OPDs) where balanced hole and electron mobilities are important. For OPDs using the same model system, the maximum photocurrent is obtained for a PCBM content of 80wt.% while for OPTs, it retained its photocurrent from PCBM 80wt.% up to PCBM 100wt.%. In addition, BHJ transistors respond more rapidly to changes in the illumination intensity than transistors with a pure PCBM layer.
  • Xiaomin Xu, Kenjiro Fukuda, Akchheta Karki, Sungjun Park, Hiroki Kimura, Hiroaki Jinno, Nobuhiro Watanabe, Shuhei Yamamoto, Satoru Shimomura, Daisuke Kitazawa, Tomoyuki Yokota, Shinjiro Umezu, Thuc-Quyen Nguyen, Takao Someya
    PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 115(18) 4589-4594 2018年5月  査読有り
    Flexible photovoltaics with extreme mechanical compliance present appealing possibilities to power Internet of Things (IoT) sensors and wearable electronic devices. Although improvement in thermal stability is essential, simultaneous achievement of high power conversion efficiency (PCE) and thermal stability in flexible organic photovoltaics (OPVs) remains challenging due to the difficulties in maintaining an optimal microstructure of the active layer under thermal stress. The insufficient thermal capability of a plastic substrate and the environmental influences cannot be fully expelled by ultrathin barrier coatings. Here, we have successfully fabricated ultraflexible OPVs with initial efficiencies of up to 10% that can endure temperatures of over 100 degrees C, maintaining 80% of the initial efficiency under accelerated testing conditions for over 500 hours in air. Particularly, we introduce a low-bandgap poly(benzodithiophene-cothieno[3,4-b] thiophene) (PBDTTT) donor polymer that forms a sturdy microstructure when blended with a fullerene acceptor. We demonstrate a feasible way to adhere ultraflexible OPVs onto textiles through a hot-melt process without causing severe performance degradation.
  • Yasutoshi Jimbo, Naoji Matsuhisa, Wonryung Lee, Peter Zalar, Hiroaki Jinno, Tomoyuki Yokota, Masaki Sekino, Takao Someya
    ACS APPLIED MATERIALS & INTERFACES 9(40) 34744-34750 2017年10月  査読有り
    Flexible, transparent electrodes are a crucial component for future implantable and wearable systems. For practical applications, conductivity and flexibility should be further improved to prevent signal attenuation, heat generation, and disconnection. Herein, we fabricate an ultraflexible transparent electrode with low sheet resistance (8.6 Omega/sq) using an indium-tin-oxide/Au/indium-tin-oxide (ITO) multilayer on a 1 mu m thick parylene substrate. The electrodes were foldable and when compared to pristine ITO displayed greater mechanical robustness. Applicability for large-area applications was confirmed through electrochemical impedance measurements, and the compatibility of electrode arrays for vivo applications was demonstrated with an optogenetic experiment. As a result of the ultraflexible transparent electrode's excellent conformity to soft tissue, voltage signals induced by light stimulation directly below the electrode were successfully recorded on the moving muscle.
  • Hiroaki Jinno, Kenjiro Fukuda, Xiaomin Xu, Sungjun Park, Yasuhito Suzuki, Mari Koizumi, Tomoyuki Yokota, Itaru Osaka, Kazuo Takimiya, Takao Someya
    Nature Energy 2(10) 780-785 2017年10月  査読有り
  • Hiroaki Jinno, Tomoyuki Yokota, Naoji Matsuhisa, Martin Kaltenbrunner, Yutaro Tachibana, Takao Someya
    Organic Electronics 40 58-64 2017年1月  査読有り
  • Tomoyuki Yokota, Peter Zalar, Martin Kaltenbrunner, Hiroaki Jinno, Naoji Matsuhisa, Hiroki Kitanosako, Yutaro Tachibana, Wakako Yukita, Mari Koizumi, Takao Someya
    SCIENCE ADVANCES 2(4) 2016年4月  査読有り
    Thin-film electronics intimately laminated onto the skin imperceptibly equip the human body with electronic components for health-monitoring and information technologies. When electronic devices are worn, the mechanical flexibility and/or stretchability of thin-film devices helps to minimize the stress and discomfort associated with wear because of their conformability and softness. For industrial applications, it is important to fabricate wearable devices using processing methods that maximize throughput and minimize cost. We demonstrate ultraflexible and conformable three-color, highly efficient polymer light-emitting diodes (PLEDs) and organic photodetectors (OPDs) to realize optoelectronic skins (oe-skins) that introduce multiple electronic functionalities such as sensing and displays on the surface of human skin. The total thickness of the devices, including the substrate and encapsulation layer, is only 3 mu m, which is one order of magnitude thinner than the epidermal layer of human skin. By integrating green and red PLEDs with OPDs, we fabricate an ultraflexible reflective pulse oximeter. The device unobtrusively measures the oxygen concentration of blood when laminated on a finger. On-skin seven-segment digital displays and color indicators can visualize data directly on the body.
  • Naoji Matsuhisa, Martin Kaltenbrunner, Tomoyuki Yokota, Hiroaki Jinno, Kazunori Kuribara, Tsuyoshi Sekitani, Takao Someya
    NATURE COMMUNICATIONS 6 2015年6月  査読有り
    The development of advanced flexible large-area electronics such as flexible displays and sensors will thrive on engineered functional ink formulations for printed electronics where the spontaneous arrangement of molecules aids the printing processes. Here we report a printable elastic conductor with a high initial conductivity of 738 S cm (-1) and a record high conductivity of 182 S cm(-1) when stretched to 215% strain. The elastic conductor ink is comprised of Ag flakes, a fluorine rubber and a fluorine surfactant. The fluorine surfactant constitutes a key component which directs the formation of surface-localized conductive networks in the printed elastic conductor, leading to a high conductivity and stretchability. We demonstrate the feasibility of our inks by fabricating a stretchable organic transistor active matrix on a rubbery stretchability-gradient substrate with unimpaired functionality when stretched to 110%, and a wearable electromyogram sensor printed onto a textile garment.

講演・口頭発表等

 5

担当経験のある科目(授業)

 1

所属学協会

 3

共同研究・競争的資金等の研究課題

 3