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Yuko Inatomi

  (稲富 裕光)

Profile Information

Affiliation
Professor (Director), Institute of Space and Astronautical Science, Department of Interdisciplinary Space Science, Japan Aerospace Exploration Agency
Professor, School of Physical Sciences, SOKENDAI (The Graduate University for Advanced Studies)
Degree
Doctor of Engineering(Mar, 1992, The University of Tokyo)
Researcher number
50249934
ORCID ID
 https://orcid.org/0000-0002-2845-9636
J-GLOBAL ID
200901018824285220
researchmap Member ID
1000144502

宇宙環境の特性を利用した物質科学研究を通して地球上のみならず宇宙空間における物質の変化を探求しています。具体的には、観測ロケット・国際宇宙ステーションなど宇宙飛翔体による微小重力、遠心機による過重力、強磁場など様々な環境を利用して、凝固・結晶成長の素過程の解明、環境相中の輸送現象の解明と制御、新しい材料プロセスの開発に取り組んでいます。

Research Interests

 9

Research Areas

 5

Research History

 14
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Education

 3

Major Committee Memberships

 27
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Awards

 6
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Papers

 196
  • Rachid Ghritli, Yasunori Okano, Yuko Inatomi, Sadik Dost
    Journal of Chemical Engineering of Japan, 56(1) 2222757, Dec 31, 2023  Peer-reviewed
  • Shunta Kimura, Shu Ishikawa, Nobuya Hayashi, Kazuhisa Fujita, Yuko Inatomi, Shino Suzuki
    Frontiers in Microbiology, 14 1253436, Dec, 2023  Peer-reviewed
    <jats:p>Planetary protection is a guiding principle aiming to prevent microbial contamination of the solar system by spacecraft (forward contamination) and extraterrestrial contamination of the Earth (backward contamination). Bioburden reduction on spacecraft, including cruise and landing systems, is required to prevent microbial contamination from Earth during space exploration missions. Several sterilization methods are available; however, selecting appropriate methods is essential to eliminate a broad spectrum of microorganisms without damaging spacecraft components during manufacturing and assembly. Here, we compared the effects of different bioburden reduction techniques, including dry heat, UV light, isopropyl alcohol (IPA), hydrogen peroxide (H<jats:sub>2</jats:sub>O<jats:sub>2</jats:sub>), vaporized hydrogen peroxide (VHP), and oxygen and argon plasma on microorganisms with different resistance capacities. These microorganisms included <jats:italic>Bacillus atrophaeus</jats:italic> spores and <jats:italic>Aspergillus niger</jats:italic> spores, <jats:italic>Deinococcus radiodurans</jats:italic>, and <jats:italic>Brevundimonas diminuta</jats:italic>, all important microorganisms for considering planetary protection. <jats:italic>Bacillus atrophaeus</jats:italic> spores showed the highest resistance to dry heat but could be reliably sterilized (i.e., under detection limit) through extended time or increased temperature. <jats:italic>Aspergillus niger</jats:italic> spores and <jats:italic>D. radiodurans</jats:italic> were highly resistant to UV light. Seventy percent of IPA and 7.5% of H<jats:sub>2</jats:sub>O<jats:sub>2</jats:sub> treatments effectively sterilized <jats:italic>D. radiodurans</jats:italic> and <jats:italic>B. diminuta</jats:italic> but showed no immediate bactericidal effect against <jats:italic>B. atrophaeus</jats:italic> spores. IPA immediately sterilized <jats:italic>A. niger</jats:italic> spores, but H<jats:sub>2</jats:sub>O<jats:sub>2</jats:sub> did not. During VHP treatment under reduced pressure, viable <jats:italic>B. atrophaeus</jats:italic> spores and <jats:italic>A. niger</jats:italic> spores were quickly reduced by approximately two log orders. Oxygen plasma sterilized <jats:italic>D. radiodurans</jats:italic> but did not eliminate <jats:italic>B. atrophaeus</jats:italic> spores. In contrast, argon plasma sterilized <jats:italic>B. atrophaeus</jats:italic> but not <jats:italic>D. radiodurans</jats:italic>. Therefore, dry heat could be used for heat-resistant component bioburden reduction, and VHP or plasma for non-heat-resistant components in bulk bioburden reduction. Furthermore, IPA, H<jats:sub>2</jats:sub>O<jats:sub>2</jats:sub>, or UV could be used for additional surface bioburden reduction during assembly and testing. The systemic comparison of sterilization efficiencies under identical experimental conditions in this study provides basic criteria for determining which sterilization techniques should be selected during bioburden reduction for forward planetary protection.</jats:p>
  • Nirmal Kumar Velu, Yasuhiro Hayakawa, Haruhiko Udono, Yuko Inatomi
    Journal of Materials Science: Materials in Electronics, 34(19) 1480, Jul, 2023  Peer-reviewedLast author
    Thermoelectric materials with optimum carrier concentration of the order of 1019–1020/cm3 are required to obtain a high figure of merit (ZT) value. As undoped In0.8Ga0.2Sb has a lower carrier concentration (~1016/cm3), Te impurity was doped between low (1 × 1018/cm3) and high level (1 x 1021/cm3) to understand the effects of doping on its thermoelectric properties. The undoped and Te-doped In0.8Ga0.2Sb crystals retained cubic zinc blende crystal structure irrespective of heavy doping of Te element. In addition to the optical phonon vibrational modes, acoustic phonon modes were also present when the doping concentration exceeded 1 × 1018/cm3. The carrier concentration in Te-doped In0.8Ga0.2Sb crystals were varied in the range 1018–1020/cm3. Te-doped In0.8Ga0.2Sb with concentration 1 × 1018/cm3 was recorded a higher power factor because of its lower resistivity and higher mobility than other crystals. The ZT of Te-doped In0.8Ga0.2Sb (1 × 1018/cm3) was higher than other samples at 300–450 K. This study revealed that the optimum Te dopant concentration to enhance the ZT value of InxGa1−xSb is 1 x 1018/cm3 for optimizing its properties toward mid-temperature thermoelectric applications.
  • Nirmal Kumar Velu, Yasuhiro Hayakawa, Haruhiko Udono, Yuko Inatomi
    Journal of Materials Science, 58(19) 7995-8004, May, 2023  Peer-reviewedLast author
    Thermoelectric devices require p-type and n-type semiconductors with similar chemical, mechanical and thermoelectric properties to achieve maximum efficiency. To match with n-type In0.95Ga0.05Sb crystals for the fabrication of thermoelectric device, zinc (Zn) element was doped with In0.95Ga0.05Sb crystal intentionally to change its conductivity from n-type to p-type and its thermoelectric properties were studied. The Zn-doped In0.95Ga0.05Sb crystals grown by directional solidification were free from micro-cracks and their composition was distributed homogeneously. The carrier concentration was increased upon doping with Zn element. The resistivity of Zn-doped In0.95Ga0.05Sb increased with increasing temperature that showed degenerate semiconducting characteristics resulted from heavy doping. The Peierls distortion resulting from Sb–Sb interaction was observed in Zn-doped In0.95Ga0.05Sb crystals. The higher electron contribution and lower phonon contribution to total thermal conductivity were obtained in Zn-doped In0.95Ga0.05Sb than undoped crystals. The maximum ZT of 0.24 at 573 K was achieved by Zn-doped In0.95Ga0.05Sb with dopant concentration 1 × 1020 atoms/cm3. The ZT achieved is the highest among other reported values of p-type III–V semiconductors.
  • S. Athithya, K. P.Mohamed Jibri, S. Harish, K. Hayakawa, Y. Kubota, H. Ikeda, Y. Hayakawa, Y. Inatomi, M. Navaneethan, J. Archana
    Materials Research Express, 10(5), May 1, 2023  Peer-reviewed
    Solid solution SnSe0.75S0.25 has potential to improve thermoelectric performance via ultra-low thermal conductivity as compared to the pristine SnSe which originates from phonon scattering due to disordered atoms of selenium (Se) and sulfur (S). SnSe0.75S0.25 and Cu-doped SnSe0.75S0.25 compounds were prepared via high energy ball milling and pelletized by a spark plasma sintering (SPS) process. Dislocation and point defects were successfully introduced by SnSe0.75S0.25. The existence of S in the Se site induced mass fluctuation which favors high-frequency phonon scattering. This leads to an impressively ultra-low thermal conductivity (κT) value of 0.258 W mK−1 at 753 K for SnSe0.75S0.25. Next, the Cu dopant was selected to enhance the electrical conductivity, which improved from 514.44 S m−1 (SnSe0.75S0.25) to 725.08 S m−1 for Sn0.98Cu0.02Se0.75S0.25 at 738 K. Interestingly, the Cu dopant induced nanoprecipitates of Cu2Se inside the grains, which further strengthens the phonon scattering. The Cu2Se nanoprecipitates and various defects at the grain boundaries contributed to a lower κT of 0.295 W mK−1 at 753 K for a Sn0.94Cu0.06Se0.75S0.25 sample. Moreover, the maximum figure of merit of (ZT) ∼0.19 at 738 K was attained for the Sn0.98Cu0.02Se0.75S0.25 sample.
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Misc.

 284
  • 齋藤 洋祐, 小山 忠信, 百瀬 与志美, 田中 昭, 池田 浩也, 立岡 浩一, 石田 明広, 稲富 裕光, 早川 泰弘
    応用物理学会学術講演会講演予稿集, 2011.1 3176-3176, Mar 9, 2011  
  • Kinoshita Kyoichi, Arai Yasutomo, Miyata Hiroaki, Tanaka Ryota, Sone Takehiko, Yoshikawa Jyunichi, Kihara Takashi, Shibayama Hiroharu, kubota Yasushi, Shimaoka Taro, Warashina Yusuke, Inatomi Yuko, Sakata Kaoruho, Takayanagi Masahiro, Yoda Shinichi
    27th(27) 39-40, Mar, 2011  
    The Twenty-seventh Space Utilization Symposium (January 24-25, 2011. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)), Sagamihara, Kanagawa JapanWe have prepared for SiGe crystal growth experiments on board the ISS "Kibo". The two-dimensional model of the TLZ (traveling liquidus-zone) method will be studied by microgravity experiments because disturbance in constituent element by convection upon freezing is avoided in microgravity. For successful space experiments, growth conditions using a bread board model of a gradient heating furnace (GHF) for space experiments are examined on the ground. Procedures for determining growth conditions and finally fixed growth conditions are reported.Number of authors: 15Physical characteristics: Original contains color illustrations
  • Okutani Takeshi, Ono Hiromichi, Tomita Shouhei, Horiguchi Ryota, Muroi Ryota, Nakazawa Tatuya, Nagai Hideaki, Goto Takashi, Tu Rong, Hayakawa Yasuhiro, Inatomi Yuko
    27th(27) 43-46, Mar, 2011  
    The Twenty-seventh Space Utilization Symposium (January 24-25, 2011. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)), Sagamihara, Kanagawa JapanThe research team on solidification was organized for researching the control of crystalline and structural orientation to improve its performance by use of unidirectional solidification, splat solidification in microgravity and electromagnetic levitation. In 2010, we report the synthesis of SiGe thermoelectric material with phase selection and structural orientation, the synthesis of Half-Heusler ZrNiSn with phase selection and crystalline and structural orientation by unidirectional solidification in microgravity, the synthesis of homogeneous Chalcopyrite Cu2ZnSnS4 by splat-solidification in microgravity, elucidation of activation for hydrogen storage alloy to improve the amount of hydrogen storage by use of capillary effect in microgravity, and properties of SiGe thermoelectric material solidified from undercooled melt by EML.Number of authors: 12Physical characteristics: Original contains color illustrations
  • Kimura Yuki, Tanaka Kyoko, Miura Hitoshi, Tsukamoto Katsuo, Inatomi Yuko
    宇宙利用シンポジウム, 27th(27) 47-50, Mar, 2011  
    The Twenty-seventh Space Utilization Symposium (January 24-25, 2011. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)), Sagamihara, Kanagawa JapanTo know the formation process of cosmic dust particles, we attempted for the first time interferometric observation to a condensation experiment in vapor phase, the gas evaporation method. Homogeneous nucleation is a fundamental process of dust formation in universe. For the first step, temperature distribution around evaporation source was measured with respect to the source temperature in the gas evaporation method for the first time in a quarter century. We visualized a condensation of smoke particles in gas phase and temperature history including a cooling rate of produced particles after nucleation was recognized. Homogeneously condensed WO3 nuclei initially maintain their temperature for ca.5 ms and then cool down with a rate of ca.5×10(exp 4) K/s. The degree of supersaturation during the nucleation was at least as high as 10(exp 7).Physical characteristics: Original contains color illustrations
  • 浜田剛, 永井秀明, 稲富裕光, 奥谷猛
    日本材料科学会学術講演大会講演予稿集, 2011, 2011  
  • 木村勇気, 田中今日子, 三浦均, 稲富裕光, 塚本勝男
    日本物理学会講演概要集, 66(2), 2011  
  • 向井碧, 宮田浩旭, 冨岡浩, 太田昌也, 稲富裕光, 和田里彦, 村上敬司, 早川泰弘
    材料とプロセス(CD-ROM), 24(2), 2011  
  • 稲富裕光
    日本マイクログラビティ応用学会誌(Web), 28(4), 2011  
  • Kimura Y., Tanaka K. K., Miura H., Inatomi Y., Tsukamoto K.
    Meeting Abstracts of the Physical Society of Japan, 66 909-909, 2011  
  • 稲富裕光, 芦田幹大, 奥谷猛
    平成23年度宇宙環境利用の展望: (財)資源探査用観測システム･宇宙環境利用研究開発機構, 5-1-5-5, 2011  
  • HAYAKAWA Yasuhiro, ARIVANANDHAN Mukannan, RAJESH Govindasamy, KOYAMA Tadanobu, MOMOSE Yoshimi, MORII Hisashi, AOKI Toru, TANAKA Akira, OKANO Yasunori, OZAWA Tetsuo, INATOMI Yuko
    IEICE technical report, 110(30) 33-38, May 6, 2010  
    Microgravity studies on the dissolution and crystallization of In_xGa_<i_x>Sb have been done using a sandwich combination of InSb and GaSb as the starting material using the Chinese recoverable satellite. The same type of experiment was performed under 1G gravity condition for comparison. From these experiments and the numerical simulation, it is found that the shape of the solid/liquid interface and composition profile in the solution was found to be significantly affected by gravity. The dissolution process of GaSb into InSb melt was observed by X-ray penetration method. GaSb seed was dissolved faster than GaSb feed even though the GaSb feed temperature was higher than that of GaSb seed temperature. These results clearly indicate that solute transport due to gravity affects dissolution and growth processes of alloy semiconductor bulk crystals.
  • Takagi Yoshiki, Abe Yoshiyuki, Usuba Shu, Inatomi Yuko, Suzuki Masaaki, Mori Shinsuke, Suda Yoshihisa, Shimizu Osamu
    26th(26), Feb, 2010  
    The Twenty-sixth Space Utilization Symposium (January 25-26, 2010: ISAS/JAXA Sagamihara, Japan)This working group was started for joint research for thin films and fine powders of carbon and related materials, specially aimed for the future microgravity environmental experiment for diamond or fullerene synthesis. For this year, we tried synthesize diamond particles under pseudo-microgravity and high-gravity environment with closed reaction chamber.Physical characteristics: Original contains color illustrationsjoint hosting: The Science Council of Japan
  • Inatomi Yuko, Yoshizaki Izumi, Adachi Satoshi, Shimaoka Taro, Sone Takehiko, Tomobe Toshiyuki, Tanaka Tetsuo, Yoda Shinichi
    26th(26), Feb, 2010  
    The Twenty-sixth Space Utilization Symposium (January 25-26, 2010: ISAS/JAXA Sagamihara, Japan)FACET, which has been conducted onboard "Kibo" since April 9, 2009, was completed on June 12, 2009. FACET aimed to clarify the mechanism of a faceted cellular array growth by precisely observing the phenomena at the solid/liquid interface. Phenyl salicylate / t-butanol alloy was used as a sample material instead of semiconductors or oxides. The crystal growth processes were visualized in situ using a microscope and an interferometer, especially focusing on changes in temperature and concentration in the sample.Physical characteristics: Original contains color illustrationsjoint hosting: The Science Council of Japan
  • Kinoshita Kyoichi, Arai Yasutomo, Miyata Hiroaki, Tanaka Ryota, Sone Takehiko, Yoshikawa Jyunichi, Kihara Takashi, Shibayama Hiroharu, Adachi Satoshi, Inatomi Yuko, Takayanagi Masahiro, Yoda Shinichi
    26th(26), Feb, 2010  
    The Twenty-sixth Space Utilization Symposium (January 25-26, 2010: ISAS/JAXA Sagamihara, Japan)We are preparing for SiGe crystal growth experiments on board the ISS "Kibo". The two-dimensional model of the TLZ (traveling liquidus-zone) method will be studied by microgravity experiments because disturbance in constituent element by convection upon freezing is avoided in microgravity because convection in a melt is suppressed. For successful space experiments, growth conditions using a bread board model of a gradient heating furnace (GHF) for space experiments are examined. Design and fabrication of a FM cartridge are developed. Here, achievements in the present preparatory stage are reported.Physical characteristics: Original contains color illustrationsjoint hosting: The Science Council of Japan
  • INATOMI Yuko
    Journal of The Japan Society of Microgravity Application, 27(1) 32-36, Jan 31, 2010  Lead authorCorresponding author
    FACET, which has been conducted onboard ``Kibo'' since April 9, 2009, was completed on June 12, 2009. FACET aimed to clarify the mechanism of a faceted cellular array growth by precisely observing the phenomena at the solid / liquid interface. Phenyl salicylate / t-butanol alloy was used as a sample material instead of semiconductors or oxides. The crystal growth processes were visualized in situ using a microscope and an interferometer, especially focusing on changes in temperature and concentration in the sample. Some experimental results were briefly reported in the present paper.
  • 稲富裕光, 早川泰弘, 木下恭一, 荒井康智, 岡野泰則, 小澤哲夫, 新船幸二, 古川義純, 塚本勝男, 真木孝雄
    宇宙利用シンポジウム, 26th 69-72, 2010  
  • 石川毅彦, 稲富裕光, 橋本樹明, 澤井秀次郎, 斉藤芳隆, 吉光徹雄, 坂井真一郎, 小林弘明, 藤田和央, 坂東信尚
    平成21年度宇宙環境利用の展望: (財)資源探査用観測システム･宇宙環境利用研究開発機構, 8-1-8-18, 2010  
  • HAYAKAWA Yasuhiro, RAJESH Govindasamy, ARIVANANDHAN Mukannan, TANAKA Akira, OKANO Yasunori, OZAWA Tetsuo, INATOMI Yuko
    26(4) 363-363, Oct 19, 2009  
  • INATOMI Yuko, YOSHIZAKI Izumi, ADACHI Satoshi, SHIMAOKA Taro, SONE Takehiko, TOMOBE Toshiyuki, TANAKA Tetsuo, YODA Shinichi
    26(4) 369-369, Oct 19, 2009  
  • RAJESH Govindasamy, MORII Hisashi, AOKI Toru, KOYAMA Tadanobu, MOMOSE Yoshimi, TANAKA Akira, OZAWA Tetsuo, INATOMI Yuko, HAYAKAWA Yasuhiro
    IEICE technical report, 109(24) 43-47, May 7, 2009  
    We introduce a growth technique to grow homogeneous In_xGa_<1-x>Sb ternary bulk crystal and a method to measure the composition profiles in the InGaSb solution. In_xGa_<1-x>Sb bulk crystal was grown on a GaSb seed under a constant temperature gradient using a GaSb (seed)/InSb/GaSb (feed) sandwich sample. During growth, heat pulse technique was applied to estimate the growth rate. Homogeneous In_<0,03>Ga_<0.47>Sb crystal was grown by cooling the sample at an optimized value estimated by the temperature gradient and the growth rate. It was also demonstrated that the X-ray penetration method was a good method to measure the composition profiles in the solution.
  • 稲富 裕光
    ISASニュース, 338 7-7, May, 2009  
    Attachment
  • TAKAGI Yoshiki, ABE Yoshiyuki, USUBA Shu, INATOMI Yuko, SUZUKI Masaaki, MORI Shinsuke, SUDA Yoshihisa, SHIMIZU Osamu
    Journal of The Japan Society of Microgravity Application, 26(2) 81-87, Apr 30, 2009  
    Diamond synthesis under microgravity environment with parabolic flights by DAS and rocket by JAXA was reported. Gaseous species on the reaction chamber were detected and analyzed with OES (optical emission spectroscopy), under terrestrial gravity environment and microgravity environment, and we expected that synthesized diamond particles might have some deferent morphology compare with terrestrial conditions. Unfortunately, this particular launch was not retrieved, so we don't have our diamond samples for confirm SEM and Raman spectra.Key wards: Diamond, Space Utilization, OES(optical emission spectroscopy)
  • Inatomi Yuko, Hayakawa Yasuhiro, Kinoshita Kyoichi, Arai Yasutomo, Okano Yasunori, Ozawa Tetsuo, Arafune Koji, Furukawa Yoshinori, Tsukamoto Katsuo, Maki Takao
    27th(25) 35-38, Mar, 2009  
    The Twenty-fifth Space Utilization Symposium (January 14-15, 2009: ISAS/JAXA Sagamihara, Japan)Achievement of an extremely weak state of natural convection by utilization of microgravity environment is regarded as a promising method which leads us to investigate the influence of convection on growth process from liquid phase on the terrestrial condition. A main subject of this working group is to make proposals for microgravity experiments concerning to a bulk crystal growth from solution or from melt. In this fiscal year the working group performed the following subjects: (1) in situ observation experiment under a short-duration micro G using the S-520-24 sounding rocket, (2) preparation for crystal growth experiment of InGaSb on ISS, and (3) some exploratory experiments related to the above subjects.
  • Kinoshita Kyoichi, Adachi Satoshi, Miyata Hiroaki, Inatomi Yuko, Arai Yasutomo, Yoda Shinichi
    25th(25), Mar, 2009  
    The Twenty-fifth Space Utilization Symposium (January 14-15, 2009: ISAS/JAXA Sagamihara, Japan)We are preparing for crystal growth experiments in microgravity using a gradient heating furnace (GHF) on board the ISS "Kibo". The two-dimensionality in the traveling liquidus-zone (TLZ) growth should be avoided for obtaining large scale compositionally uniform alloy crystals. Factors affecting one-dimensionality are further studied theoretically and verification items are extracted. Cartridge design and fabrication of an engineering model are progressed. Here, achievements in the present preparatory stage are reported.
  • Higuchi Kensuke, Inatomi Yuko
    25th(25), Mar, 2009  
    The Twenty-fifth Space Utilization Symposium (January 14-15, 2009: ISAS/JAXA Sagamihara, Japan)We have reported containerless diffusion experiments of Si-Ge and Al-Ag at the last symposium. Here the 3-dimensional concentration distributions after processing were investigated by X-ray CT using synchrotron radiation at SPring8. In this result, history of convection was observed, mainly because the densities of diffusion couple were too different. Therefore we additionally developed an electromagnetic-aerodynamic levitation equipment in a static magnetic field for improving temperature profile and using In-Sn as a diffusion couple.
  • Takagi Yoshiki, Abe Yoshiyuki, Usuba Shu, Inatomi Yuko, Suzuki Masaaki, Mori Shinsuke, Suda Yoshihisa, Shimizu Osamu
    56th(25), Mar, 2009  
    The Twenty-fifth Space Utilization Symposium (January 14-15, 2009: ISAS/JAXA Sagamihara, Japan)This working group was started for joint research for thin films and fine powders of carbon and related materials, specially aimed for the future microgravity environmental experiment for diamond or fullerene synthesis. For this year, we tried synthesize diamond particles under microgravity environment with parabolic flights by DAS and rocket by JAXA.
  • KOBAYASHI Hiroaki, SAWAI Shujiro, BANDO Nobutaka, SAKAI Shin-ichiro, ISHIKAWA Takehiko, INATOMI Yuko, FUJITA Kazuhisa, MARU Yusuke, HASHIMOTO Tatsuaki
    JAXA research and development report, 8(08-005) 1-24, Mar, 2009  
    A novel method for micro-gravity experiments using high altitude balloon is now under development in JAXA. The notable feature of this system is its double-shell structure. Dropped from the high altitude balloon, the inner shell falls freely for 30 to 60 seconds because the outer shell is controlled not to collide with the inner shell. Sixteen number of cold gas thrusters are installed on the vehicle to control not only its falling attitude but also spacing between the inner shell and the outer shell. This paper presents design strategy and verifi cation test results of the 50 N cold gas thrusters developed for this micro gravity experimental system. The preliminary results of the fl ight test are also presented to show its feasibility.
  • BANDO Nobutaka, SAKAI Shin-ichiro, SAWAI Shujiro, HOSHINO Shinji, TAJIMA Ken-ichi, KADOOKA Shouhei, HASHIMOTO Tatsuaki, UENO Seiya, SOSHI Takahiro, KOBAYASHI Hideaki, FUJITA Kazuhisa, ISHIKAWA Takehiko, INATOMI Yuko
    Journal of The Japan Society of Microgravity Application, 26(1) 29-35, Jan 31, 2009  Last author
    This paper proposes control system for a new micro gravity experimental system called BOV (Balloon-based Operation Vehicle). BOV uses a free-fall capsule with double-shell structure to prevent influence of aerodynamic disturbance. Additionally, BOV is raised to 40km by a high altitude balloon to extend micro gravity duration to 30 (or possibly 60) seconds. Thus we realize a medium duration micro gravity experimental system with good micro gravity environment. In this system, the most characteristic point is double-shell structure to realize drag-free system. The inner shell can fall freely since the outer shell is controlled not to collide with the inner shell. In the experiments, we realize good-quality micro gravity and realize to continue moderate micro gravity duration. This system is now improving and near future we can practically utilize BOV's system for moderate micro gravity duration with low-cost easily.
  • HASHIMOTO Tatsuaki, SAWAI Shujiro, SAKAI Shin'ichiro, BANDO Nobutaka, KOBAYASHI Hiroaki, ISHIKAWA Takehiko, INATOMI Yuko, FUJITA Kazuhisa, YOSHIMITSU Tetsuo, SAITO Yoshitaka, FUKE Hideyuki
    Journal of The Japan Society of Microgravity Application, 26(1) 9-14, Jan 31, 2009  
    To realize micro-gravity environment of long duration and good quality with moderate cost, an experimental system which is released from a high altitude balloon has developed. The system has a double-shell drag-free structure and the outer shell, namely flight capsule, is controlled not to collide with the inner shell to realize micro-gravity environment of good quality. This paper shows the design philosophy and the configuration of the system. The system was successfully tested twice, in May, 2006 and in May, 2007. Outline of the test results and future development plan are also described. Key Words: High-altitude balloon, Micro gravity, Drag-free, Supersonic.
  • SAITO Yoshitaka, IZUTSU Naoki, ISHIKAWA Takehiko, INATOMI Yuko, HASHIMOTO Tatsuaki
    Journal of The Japan Society of Microgravity Application, 26(1) 15-20, Jan 31, 2009  
    The scientific balloons have been used for varios space missions including the micro gravity experiments. To ensure the long experiment time, we developed the high altitude balloon using thin main shell covered by additional caps.This technique is to evaluate the possible maximum strain on the balloon film at various flight altitude assuming the axis symmetrical shape conserving the surface density and support the weak points by adding more films as caps. In this paper,after reviewing the balloon experiment and basic equations to determine the balloon shape,the capping technique will be introduced and its applications to the micro gravity experiment will be described.
  • SAWAI Shujiro, HASHIMOTO Tatsuaki, SAKAI Shinichiro, BANDO Nobutaka, YOSHIMITSU Tetsuo, ISHIKAWA Takehiko, INATOMI Yuko, FUKE Hideyuki, KAMATA Yukio, NAGAE Tomoko, KOBAYASHI Hiroaki, FUJITA Kazuhisa, KOJIMA Takayuki, UENO Seiya, MIYAJI Kouji, KADOOKA Shohei, HIRAKI Kouju, SUZUKI Koujiro, UEHARA Satoshi
    Journal of The Japan Society of Microgravity Application, 26(1) 21-28, Jan 31, 2009  
    A novel way to conduct microgravity experiments using high altitude balloon is now under development at ISAS/JAXA. By dropping the rocket shaped vehicle from the high altitude balloon, high quality microgravity environment can be served during its free fall of 30 to 60 sec. This paper summarizes the outline of free fall vehicle, which is called as BOV (Balloon based Operation Vehicle). The preliminary results of its second flight test are also presented to show its feasibility.
  • 樋口健介, 稲富裕光
    日本金属学会講演概要, 144th, 2009  
  • 稲富裕光, 早川泰弘, 岡野泰則, 田中昭, 小澤哲夫, 木下恭一
    応用物理学関係連合講演会講演予稿集, 56th, 2009  
  • 樋口健介, 稲富裕光, 飯倉寛
    材料とプロセス(CD-ROM), 22(1), 2009  
  • 稲富裕光, 吉崎泉, 足立聡, 島岡太郎, 曽根武彦, 友部俊之, 依田眞一
    宇宙科学技術連合講演会講演集(CD-ROM), 53rd, 2009  
  • 吉住千亜紀, 尾久土正己, 秋山演亮, 佐藤奈穂子, 橋本樹明, 吉光徹雄, 稲富裕光, 坂井真一郎, 丸裕介, 福家英之, 澤井秀次郎
    宇宙科学技術連合講演会講演集(CD-ROM), 53rd, 2009  
  • 橋本樹明, 吉光徹雄, 稲富裕光, 坂井真一郎, 丸祐介, 福家英之, 澤井秀次郎, 秋山演亮, 吉住千亜紀, 佐藤奈穂子
    宇宙科学技術連合講演会講演集(CD-ROM), 53rd, 2009  
  • 齋藤洋祐, ARIVANANDHAN Mukannan, WEN C., 小山忠信, 百瀬与志美, 稲富裕光, 立岡浩一, 早川泰弘
    応用物理学会学術講演会講演予稿集, 70th(3), 2009  
  • 齋藤洋祐, WEN Cuilian, 立岡浩一, ARIVANANDHAN Mukannan, 小山忠信, 百瀬与志美, 池田浩也, 稲富裕光, 早川泰弘
    結晶成長国内会議予稿集, 39th, 2009  
  • 稲富裕光, 早川泰弘, 木下恭一, 荒井康智, 岡野泰則, 小澤哲夫, 新船幸二, 古川義純, 塚本勝男, 真木孝雄
    宇宙利用シンポジウム, 25th 207-209, 2009  
  • 稲富裕光
    平成20年度宇宙環境利用の展望: (財)資源探査用観測システム･宇宙環境利用研究開発機構, 97-108, 2009  
  • INATOMI Yuko, KURIBAYASHI Kazuhiko, YOSHIZAKI Izumi, ADACHI Satoshi, SHIMAOKA Taro, SONE Takehiko, TOMOBE Toshiyuki, YODA Shinichi
    Journal of The Japan Society of Microgravity Application, 25(4) 683-685, Oct 31, 2008  Lead author
    In situ observation experiments of faceted cellular array growth are carried out in transparent organic alloy, salol - t-butyl alcohol in a microgravity condition on the Japanese Experiment Module “KIBO” of International Space Station. Growth rate of the crystal, and temperature and solute concentration fields in the melt are simultaneously measured by an amplitude modulation microscope and by a Mach-Zehnder interference microscope in order to evaluate the morphological instability of the solid/liquid interface taking account of released latent heat in faceting material.
  • HAYAKAWA Yasuhiro, OKANO Yasunori, TANAKA Akira, TANAKA Tomoyuki, OZAWA Tetsuo, INATOMI Yuko
    25(4) 726-726, Oct 30, 2008  
  • KINOSHITA Kyoichi, ARAI Y.asutomo, ADACHI Satoshi, INATOMI Yuko, MIYATA Hiroaki, YODA Shinichi
    25(4) 728-728, Oct 30, 2008  
  • INATOMI Yuko, TAKAGI Yoshiki, ISHII Nobuaki, INATANI Yoshifumi
    25(4) 729-729, Oct 30, 2008  
  • HIGUCHI Kensuke, INATOMI Yuko
    25(4) 787-787, Oct 30, 2008  
  • 稲富 裕光
    ISASニュース, 330 5-5, Sep, 2008  
    Attachment
  • 稲富 裕光
    ISASニュース, 329 6-6, Aug, 2008  
    Attachment
  • Higuchi Kensuke, Inatomi Yuko
    24th 41-42, Mar, 2008  
    Our purpose is the diffusion coefficient measurement using containerless processing to clarify the mass transfer mechanism in high temperature melts. Therefore, diffusion experiments as couples of molten Si-Ge and Al-Ag alloys have been performed using electromagnetic levitator combined with superconducting magnet. In this result, possibility of diffusion coefficient measurement in levitated melts applied static magnet field can be suggested, because the convection becomes efficiently slow.
  • 稲富 裕光
    Proc. 7th China-Japan Workshop on Microgravity Sciences, 65, 2008  

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