Updated on 2025/03/31

写真a

 
MATSUKAWA Yuko
 
Organization
Graduate School of Engineering Materials Chemistry 2 Assistant Professor
Graduate School
Graduate School of Engineering
Undergraduate School
School of Engineering Chemistry and Biotechnology
Title
Assistant Professor
External link

Degree 1

  1. 博士（工学） （ 2021.3   九州大学 ） 

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Research Interests 4

  1. セラミックス

  2. 微粒子

  3. バイオセラミックス

  4. 熱電材料

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Research Areas 1

  1. Nanotechnology/Materials / Inorganic compounds and inorganic materials chemistry

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Current Research Project and SDGs 3

  1. 組成傾斜熱電材料の開発

  2. 生体応答性セラミックスの構造制御

  3. 環境浄化用ヒドロキシアパタイトの吸着能の向上

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Research History 1

  1. Kyushu University   Assistant Professor

    2021.4 - 2023.8

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Professional Memberships 4

  1. New Ceramics Forum

    2024.7

  2. 粉体粉末冶金協会

    2024.4

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  3. Functionally Graded Materials FORUM of JAPAN

    2021.10

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  4. The Ceramic Society of Japan

    2016.5

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Committee Memberships 1

  1. Functionally Graded Materials FORUM of JAPAN   Website Editor in Public Relations  

    2022.10   

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    Committee type：Academic society

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Awards 2

  1. 花王 Crescent Award

    2023   公益財団法人　花王芸術・科学財団   クラスレート系熱電材料の実用化に向けた表面分析に基づく劣化要因解明

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    Award type：Award from publisher, newspaper, foundation, etc.  Country：Japan

  2. 第53回 リバネス研究費 日本ネットワークサポート賞

    2021.11   株式会社リバネス   ボールミルによる大型ボトムアップが拓く配向性高機能熱電材料

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Papers 10

  1. Revised method for preparation of simulated body fluid for assessment of the apatite-forming ability of bioactive materials: proposal of mixing two stock solutions Reviewed

    Dong, W; Matsukawa, Y; Long, Y; Hayashi, Y; Nakamura, J; Suzuki, K; Ohtsuki, C

    RSC ADVANCES   Vol. 14 ( 52 ) page： 38660 - 38667   2024.12

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：RSC Advances  

    Bioactive glasses and glass-ceramics exhibit osteoconductivity, which is the ability to form a direct bond with living bone tissue. This property is typically assessed by observing the formation of a hydroxyapatite layer in vitro using simulated body fluid (SBF), a solution designed to mimic the inorganic constituents of human blood plasma. SBF was developed by Kokubo et al. (T. Kokubo, H. Kushitani, S. Sakka, T. Kitsugi and T. Yamamuro, J. Biomed. Mater. Res., 1990, 24, 721-734), and its preparation and storage procedures are precisely regulated according to ISO 23317. However, despite following the regulations, SBF may precipitate during storage owing to local ion concentration fluctuations during preparation because it is a supersaturated solution of hydroxyapatite. The present study is focused on designing a preparation process that enhances the stability of SBF-type biomimetic solutions. Solutions with a nominal composition that is the same as that of SBF were prepared by mixing stock solutions containing calcium or phosphate ions separately. Depending on the preparation procedure, two types of solutions-modified biomimetic solution (mBS) and evolved biomimetic solution (eBS)-were proposed. To evaluate the stability of these solutions, variants with 1.5 times the concentration of the original solutions were prepared, and the prepared solutions were denoted as xSBF, xmBS, and xeBS (where x = 1.0 or 1.5). It was found that the formation of calcium phosphate precipitates in 1.5mBS and 1.5eBS was slower than that in 1.5SBF. Additionally, the precipitate in 1.5eBS exhibited a different morphology from hydroxyapatite precipitate, which may be due to a higher hydrogencarbonate concentration than that in 1.5SBF. eBS demonstrated increased stability and a higher concentration of carbonic acid species (carbonate ions) than SBF, while mBS showed increased stability with a lower carbonate concentration than SBF. The newly proposed routes allow the production of an aqueous solution supersaturated with hydroxyapatite as a conventional SBF that has the potential to evaluate apatite formation via in vitro examination under high initial stability.

    DOI： 10.1039/d4ra07739c

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  2. Thermoelectric Properties of Ba8CuxSiyGe46–x–y Clathrates Synthesized by the Czochralski Method Reviewed

    Kentaro Takagi, Yuko Matsukawa, Shuto Araki, Ryusei Saeki, Shigeto Yamasaki, Makoto Arita, Shinji Munetoh

    ACS Applied Energy Materials     2024.3

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1021/acsaem.3c02961

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  3. Apatite Formation on α-Tricalcium Phosphate Modified with Bioresponsive Ceramics in Simulated Body Fluid Containing Alkaline Phosphatase Open Access

    Taishi Yokoi, Shinji Tomita, Jin Nakamura, Ayae Sugawara-Narutaki, Yuko Matsukawa, Masakazu Kawashita, Chikara Ohtsuki

    Biomimetics   Vol. 9 ( 8 )   2024.8

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.3390/biomimetics9080502

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  4. Intrinsic p-type behavior and effect of Al doping on power factor in CrSi<sub>2</sub> thermoelectric materials Reviewed

    Takahiro Orita, Yuko Matsukawa, Kazuhiro Ichino, Makoto Arita, Shinji Munetoh

    Journal of Functionally Graded Materials   Vol. 36 ( 0 ) page： 13 - 18   2023.12

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    Authorship：Corresponding author   Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Functionally Graded Materials FORUM of Japan  

    <p>Chromium disilicide (CrSi<sub>2</sub>) is generally known as a p-type degenerate semiconductor whose power factor can be improved by substitution of Al on the Si site. However, it has not been clarified why holes are majority carriers in pure CrSi<sub>2</sub> nor how the thermoelectric properties of CrSi<sub>2−</sub><i><sub>x</sub></i>Al<i><sub>x</sub></i> depend on the temperature above 400 °C. In this paper, we prepared CrSi<sub>2−</sub><i><sub>x</sub></i>Al<i><sub>x</sub></i> samples with <i>x</i> ranging from 0.00 to 0.20. The composition ratio in each sample measured by Wavelength-dispersive X-ray spectroscopy (WDX) showed that the sum of Si and Al to Cr was less than the stoichiometric ratio. The electronic density of states calculated by first principles calculation based on density functional theory revealed that the atomic vacancies on the Si sites, whose existence was implied by WDX, can supply holes. Comparing thermoelectric properties of the samples at 500 °C, the sample with nominal composition CrSi<sub>1.96</sub>Al<sub>0.04</sub> showed the highest power factor 0.606 mW m<sup>−1</sup> K<sup>−2</sup>.</p>

    DOI： 10.14957/fgms.36.13

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  5. Improvement of the thermoelectric performance of boron-doped silicon by blocking minority carrier diffusion on the p<sup>+</sup>/p interface Reviewed

    Momoka Sakamoto, Yuko Matsukawa, Rikuto Sasaoka, Kohei Minoshima, Eisuke Nakamura, Makoto Arita, Shinji Munetoh

    Japanese Journal of Applied Physics   Vol. 62 ( 7 ) page： 075505 - 075505   2023.7

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：IOP Publishing  

    Abstract

    A two-layer bulk Si material with different boron concentrations was prepared using spark plasma sintering to improve its thermoelectric performance by blocking minority carrier diffusion across its interfaces. The sintered two-layer sample (p<sup>+</sup>/p-Si) was cut to include the interface. Two monolayer samples (p<sup>+</sup>-Si, p-Si) were prepared for comparison. Seebeck coefficient mapping of the p<sup>+</sup>/p-Si surface by thermal probing confirmed a Seebeck coefficient gap between the two p-type Si layers, indicating that a band offset exists at the interface. When compared with the average resistivities and voltages for p<sup>+</sup>-Si and p-Si, the electrical resistivity in the p<sup>+</sup>/p-Si sample is almost identical, but the thermoelectric voltage is higher when the p<sup>+</sup>-part is heated more than the p-part. This indicates that bipolar carrier transport inhibition in the band offset improved the thermoelectric voltage. This bandgap engineering process and principle can be extended to other thermoelectric materials that can be processed via powder sintering.

    DOI： 10.35848/1347-4065/ace4af

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    Other Link： https://iopscience.iop.org/article/10.35848/1347-4065/ace4af/pdf

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Books 1

  1. Handbook of Functionally Graded Materials

    （ Role： Contributor）

    2024.2  （ ISBN:978-4-86043-776-3 ）

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    Total pages：420   Language：Japanese Book type：Scholarly book

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Presentations 41

  1. 組成傾斜熱電材料の作製と評価 Invited

    松川祐子

    第６回「低温排熱エネルギー有効活用システム研究会」  2024.2.29 

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    Event date： 2024.2

    Presentation type：Oral presentation (invited, special)  

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  2. Coドープβ-FeSi<sub>2</sub>の組成傾斜による熱起電力の向上

    松川祐子, 森元翔也, 堀千咲, 木村祐介, 有田誠, 宗藤伸治

    第31回新構造・機能制御と傾斜機能材料シンポジウム  2022.10.27 

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    Event date： 2022.10

    Language：Japanese  

    Venue：長崎県壱岐市   Country：Japan  

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  3. Snを用いたSPS法によるBa<sub>8</sub>Cu<sub>x</sub>Ge<sub>46−x</sub>クラスレートの熱電性能向上

    松川祐子，簑島航平，佐伯龍聖， 山﨑重人，有田誠，宗藤伸治

    2025.3.28  通電焼結研究会

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    Event date： 2025.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：東北大学金属材料研究所 講堂  

  4. 生体応答性セラミックスの合成とアパタイト形成能の評価

    松川祐子

    第8回バイオ関連材料デザイン研究会  2024.9.9  バイオ関連材料デザイン研究会

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    Event date： 2024.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：愛知県名古屋市 名古屋工業大学  

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  5. リン酸エステルカルシウムの生体応答性セラミックスとしての利用

    松川 祐子, 高木 優晃, 鈴木 一正, 大槻 主税

    日本セラミックス協会東海支部 第66回東海若手セラミスト懇話会 2024年 夏期セミナー  2024.6.13  日本セラミックス協会東海支部 東海若手セラミスト懇話会

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    Event date： 2024.6

    Language：Japanese  

    Venue：岐阜県下呂市   Country：Japan  

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KAKENHI (Grants-in-Aid for Scientific Research) 2

  1. Mechanism of thermoelectric voltage improvement in compositionally graded materials

    Grant number：24K17519  2024.4 - 2026.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Early-Career Scientists

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    Authorship：Principal investigator  Grant type：Competitive

    Grant amount：\4680000 （ Direct Cost: \3600000 、 Indirect Cost：\1080000 ）

  2. クラスレート熱電変換材料の単結晶に基づく多角的な解析と設計

    Grant number：21K20489  2021.4 - 2023.3

    日本学術振興会  科学研究費助成事業  研究活動スタート支援

    松川 祐子

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    Grant type：Competitive

    Grant amount：\3120000 （ Direct Cost: \2400000 、 Indirect Cost：\720000 ）

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Teaching Experience (On-campus) 5

  1. Quantum Chemistry 1 with Exercises

    2024

  2. Physical Chemistry 3 with Exercises

    2024

  3. [G30]Chemistry and Biotechnology Laboratory 4

    2024

  4. Chemistry and Biotechnology Laboratory 4

    2024

  5. Chemistry and Biotechnology Laboratory 4

    2023

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Teaching Experience (Off-campus) 2

  1. 無機物質化学Ⅰ

    2023.4 - 2023.6 （Kyushu University）

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  2. 無機物質化学Ⅰ

    2022.4 - 2022.5 （Kyushu University）

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    Level：Undergraduate (liberal arts) 

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Social Contribution 5

  1. 学科紹介 化学生命工学科

    Role(s)：Lecturer

    理系⼥⼦のエンパワーメント 〜⼥⼦⽣徒の拡⼤と「リケジョつどいの場」の構築 ⼯学部編〜   名古屋大学  2025.3

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    Audience： High school students,　Teachers,　Guardians

    Type：Visiting lecture

    学科について紹介すると共に、自身の研究や研究者としての経験を紹介した。

  2. 令和5年度九州大学QURIESプログラム

    Role(s)：Advisor

    九州大学男女共同参画推進室  2023.8

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    Type：Research consultation

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  3. 大学での材料研究に生きる高校での学び

    Role(s)：Lecturer

    九州大学男女共同参画推進室  令和４年度 QURIES プログラムオリエンテーション  九州大学伊都キャンパス  2022.8

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    Audience： High school students

    Type：Lecture

    女性研究者の研究活動紹介、質疑応答

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  4. 長崎県立諫早高校の工学部訪問

    Role(s)：Lecturer,　Demonstrator

    九州大学工学部評価広報室  2022.8

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    Audience： High school students

    Type：University open house

    大学生活や研究活動について紹介すると共に、熱電材料についてのデモ実験や設備の解説を行った。

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  5. 温故知新の前と後：応化育ち材工新人の経験・抱負

    Role(s)：Lecturer

    九州大学親和会  令和４年度九州大学親和会第４３回総会および講演会  九州大学伊都キャンパス  2022.4

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    Audience： College students,　Graduate students,　Teachers,　Researchesrs,　General

    Type：Other

    学生時代の研究活動・研究室生活の経験に基づいて、後輩にあたる大学生・大学院生に向けての助言・勧めを含んだ講演を行った。また学内外からの参加者向けに、現在の研究活動の一端も紹介した。

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