Search Results - "Ueki, Ryuichi"

  • Showing 1 - 20 results of 20
Refine Results
  1. 1

    Low-Temperature Properties of the Magnetic Sensor with Amorphous Wire by He, Dongfeng, Umemori, Kensei, Ueki, Ryuichi, Dohmae, Takeshi, Okada, Takafumi, Tachiki, Minoru, Ooi, Shuuichi, Watanabe, Makoto

    Published in Sensors (Basel, Switzerland) (07-12-2020)
    “…We found that a magnetic sensor made of a coil wound around a 5 f0.1 mm (Fe Co ) Si B (FeCoSiB) amorphous wire could operate in a wide temperature range from…”
    Get full text
    Journal Article
  2. 2

    Study on Magneto-Resistance Sensors for Low Magnetic Field Measurements by Ueki, Ryuichi, Okada, Takafumi, Masuzawa, Mika, Tsuchiya, Kiyosumi, Kawamoto, Takashi, Umemori, Kensei, Kako, Eiji, Sakai, Hiroshi, Konomi, Taro

    “…High-Q operation of a superconducting radio frequency cavity can reduce power loss at the surface and is desirable for continuous-wave operation. To realize…”
    Get full text
    Journal Article
  3. 3

    Observation of quenching-induced magnetic flux trapping using a magnetic field and temperature mapping system by Okada, Takafumi, Kako, Eiji, Masuzawa, Mika, Sakai, Hiroshi, Ueki, Ryuichi, Umemori, Kensei, Tajima, Tsuyoshi

    Published in Physical review. Accelerators and beams (01-08-2022)
    “…Highly efficient superconducting radio-frequency cavities exhibit low heat loss and are used as components in accelerators and superconducting devices due to…”
    Get full text
    Journal Article
  4. 4

    Excitation and Magnetic Field Performances of a Prototype REBCO Sextupole Coil at 4.2 K by Wang, Xudong, Tsuchiya, Kiyosumi, Arimoto, Yasushi, Terashima, Akio, Fujita, Shinji, Tawada, Masafumi, Ueki, Ryuichi, Zong, Zhanguo, Kawai, Masanori, Masuzawa, Mika, Ohuchi, Norihito, Kikuchi, Akihiro

    “…A prototype REBa2Cu3Oy (REBCO) sextupole coil was designed and fabricated for the chromaticity correction of an asymmetric-energy collider, named SuperKEKB…”
    Get full text
    Journal Article
  5. 5
  6. 6

    Fabrication of Large-Area Graphene Using Liquid Gallium and Its Electrical Properties by Fujita, Jun-ichi, Miyazawa, Yosuke, Ueki, Ryuichi, Sasaki, Mio, Saito, Takeshi

    Published in Japanese Journal of Applied Physics (01-06-2010)
    “…We demonstrated a new process for synthesizing a graphene sheet at the interface between solid amorphous carbon and liquid gallium. The insolubility of carbon…”
    Get full text
    Journal Article
  7. 7

    Characteristics of graphene FET directly transformed from a resist pattern through interfacial graphitization of liquid gallium by Fujita, Jun-ichi, Ueki, Ryuichi, Nishijima, Takuya, Miyazawa, Yosuke

    Published in Microelectronic engineering (01-08-2011)
    “…We found that an extremely thin resist pattern on silicon dioxide can be directly transformed into a graphene field effect transistor (FET) channel via…”
    Get full text
    Journal Article Conference Proceeding
  8. 8

    In-situ Observation of Surface Graphitization of Gallium Droplet and Concentration of Carbon in Liquid Gallium by Ueki, Ryuichi, Nishijima, Takuya, Hikata, Takeshi, Ookubo, Soichiro, Utsunomiya, Risa, Matsuba, Teruaki, Fujita, Jun-ichi

    Published in Japanese Journal of Applied Physics (01-06-2012)
    “…Although carbon has been recognized to be insoluble in gallium, we found that the outermost surface of gallium has unexpectedly high carbon solubility,…”
    Get full text
    Journal Article
  9. 9

    Artificial tailoring of carbon nanotube and its electrical properties under high-resolution transmission electron microscope by Nishijima, Takuya, Ueki, Ryuichi, Miyazawa, Yosuke, Fujita, Jun-ichi

    Published in Microelectronic engineering (01-08-2011)
    “…We report the details of an electron-beam-induced crystallization process of amorphous carbon. A high-resolution transmission electron microscope having a…”
    Get full text
    Journal Article Conference Proceeding
  10. 10

    In-situ Observation of Current-Pulse-Induced Curling of Graphene Edges and Carbon-Cages Production by Nishijima, Takuya, Ueki, Ryuichi, Kano, Emi, Fujita, Jun-ichi

    Published in Japanese Journal of Applied Physics (01-06-2012)
    “…We found a new cage transformation process where Joule heating with a cyclic current pulse strongly triggered the curling of graphene edge, and enhanced the…”
    Get full text
    Journal Article
  11. 11

    Generation and repair of defect for carbon nanotube under tensile stress by low acceleration electron beam irradiation by Ueki, Ryuichi, Endo, Ryosuke, Hikata, Takeshi, Okubo, Soichro, Utsunomiya, Risa, Fujita, Jun-ichi

    Published in Microelectronic engineering (01-08-2011)
    “…[Display omitted] We report our new findings that a uniaxial tensile stress strongly enhanced the shrinking of a carbon nanotube under low-energy electron…”
    Get full text
    Journal Article Conference Proceeding
  12. 12
  13. 13

    Residual Magnetic Field Inside the Superconducting RF Cavity Shield by Masuzawa, Mika, Tsuchiya, Kiyosumi, Terashima, Akio, Suzuki, Keiko, Kato, Sho, Takao, Tomoaki, Ueki, Ryuichi

    “…Magnetic shielding is used to reduce ambient magnetic field surrounding superconducting RF cavities in order to decrease surface resistance and achieve high…”
    Get full text
    Journal Article
  14. 14

    Single-Crystalline Nanogap Electrodes: Enhancing the Nanowire-Breakdown Process with a Gaseous Environment by Suga, Hiroshi, Sumiya, Touru, Furuta, Shigeo, Ueki, Ryuichi, Miyazawa, Yosuke, Nishijima, Takuya, Fujita, Jun-ichi, Tsukagoshi, Kazuhito, Shimizu, Tetsuo, Naitoh, Yasuhisa

    Published in ACS applied materials & interfaces (24-10-2012)
    “…A method for fabricating single-crystalline nanogaps on Si substrates was developed. Polycrystalline Pt nanowires on Si substrates were broken down by current…”
    Get full text
    Journal Article
  15. 15

    SCANNING ELECTRON MICROSCOPE IMAGING OF AMYLOID FIBRILS by Takai, Eisuke, Ohashi, Gai, Ueki, Ryuichi, Yamada, Yoichi, Fujita, Jun-Ichi, Shiraki, Kentaro

    “…This study demonstrated the applicability of Scanning Electron Microscopy (SEM) for the observation of an amyloid fibrils without staining. As model specimens,…”
    Get full text
    Journal Article
  16. 16
  17. 17
  18. 18

    Enormous Shrinkage of Carbon Nanotubes under Low-Energy Electron Beam Irradiation with Uniaxial Tensile Stress by Ueki, Ryuichi, Hikata, Takeshi, Ookubo, Soichiro, Utsunomiya, Risa, Matsuba, Teruaki, Fujita, Jun-ichi

    Published in Japanese Journal of Applied Physics (01-06-2011)
    “…We found that low-energy electron irradiation combined with uniaxial tensile stress strongly enhanced the shrinkage of carbon nanotubes (CNTs). The shrinking…”
    Get full text
    Journal Article
  19. 19
  20. 20

    Effect of Annealing and Electron Irradiation on Young's Modulus of Amorphous Carbon Pillars Grown by FIB-CVD by Ueki, Ryuichi, Fujita, Jun-ichi, Ichihashi, Toshinari, Kaito, Takashi, Matsui, Shinji

    “…The paper reports on the effect of vacuum annealing and and electron shower irradiation on the Young's modulus of amorphous carbon pillars grown by…”
    Get full text
    Conference Proceeding