TAKAHASHI Takuma

Affiliation

Faculty of Environment and Information Sciences, Division of Artificial Environment and Information

Job Title

Assistant Professor


Degree 【 display / non-display

  • Doctor of Engineering - Nagaoka University of Technology

Campus Career 【 display / non-display

  • 2022.4
     
     

    Duty   Yokohama National UniversityFaculty of Environment and Information Sciences   Division of Artificial Environment and Information   Assistant Professor  

 

Papers 【 display / non-display

  • Development of a New Evaluation Method based on Optical Coherence Tomography Observation to Obtain Information on Internal Structural Changes in Real Time and in Three Dimensions during the Ceramics Manufacturing Process

    TAKAHASHI Takuma, TATAMI Junichi

    Journal of the Japan Society of Powder and Powder Metallurgy   70 ( 10 )   416 - 426   2023.10

    DOI CiNii Research

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:Japan Society of Powder and Powder Metallurgy   Joint Work  

  • Effects of Inorganic Binder on Dewaxing Behavior of Alumina Green Body

    Minami Mariko, Tatami Junichi, Iijima Motoyuki, Takahashi Takuma

    Journal of the Society of Powder Technology, Japan   60 ( 9 )   542 - 546   2023.9

    DOI CiNii Research

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:The Society of Powder Technology, Japan   Joint Work  

  • Drying Process of Particle Suspension by OCT Operando Observation

    TAKAHASHI Takuma

    Hosokawa Powder Technology Foundation ANNUAL REPORT   30 ( 0 )   65 - 71   2023.5

    DOI CiNii Research

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:Hosokawa Powder Technology Foundation   Single Work  

    <p>The particle aggregate structure formed during drying is desired strongly to control elaborately and flexibly in products and manufacturing processes using particle suspensions, because it is critical to the final performances. However, a direct understanding of the phenomenon under the actual environment is difficult due to the complexity of various factors that affect each other. To solve this issue, an operando observation system that can simultaneously measure the drying characteristics curves, which is the standard-scale of materials, and observe the internal structural changes was constructed in this study. The system consists of a swept-source optical coherence tomography (SS-OCT) for observation, an electronic balance for measuring weight change, and a probe for measuring environmental temperature and humidity change. The drying behavior of coffee droplets and Al<sub>2</sub>O<sub>3</sub> slurry was observed using this system, and it was found that the internal structural changes during drying could be directly correlated with the drying characteristics and evaluated quantitatively. Furthermore, the influences of solid concentration and particle dispersion/agglomeration in Al<sub>2</sub>O<sub>3</sub> slurry on the internal structure change and drying characteristics were also clarified.</p>

  • In-situ investigation on crack-initiation and deformation of Al2O3 green bodies during dewaxing process by combined OCT-TG-FTIR and TMA

    Minami Mariko, Tatami Junichi, Iijima Motoyuki, Takahashi Takuma, Ohji Tatsuki

    CERAMICS INTERNATIONAL   49 ( 10 )   15387 - 15394   2023.5  [Reviewed]

    DOI Web of Science

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Joint Work  

  • Novel <i>operando</i> observation technique based on combined optical coherence tomography–thermogravimetry for monitoring internal structural changes of drying ceramic slurries

    Kuroda Hiromasa, Tatami Junichi, Iijima Motoyuki, Takahashi Takuma

    大日本窯業協會雑誌   131 ( 3 )   37 - 41   2023.3  [Reviewed]

    DOI Web of Science CiNii Research

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:公益社団法人 日本セラミックス協会   Joint Work  

    <p>In the wet forming of ceramics, it is critical to control the cracking and deformation of the ceramic slurry during the drying process. This necessitates a comprehensive understanding of the changes in the internal structure of the slurry during the drying process using a high-resolution technique that enables direct and high speed observation. In this study, a combined system of optical coherence tomography (OCT) and thermogravimetry (TG) was developed for the <i>operando</i> observation of the evolution of the internal structure of a drying SiO<sub>2</sub> slurry. In the early stages of drying, the OCT signal intensity changed significantly owing to the Brownian motion of the SiO<sub>2</sub> particles in the slurry. The slurry was found to shrink as it dried and then lose its fluidity, and the ceramic particles were found to agglomerate from the surface. In the final stages of drying, localized dry regions developed in the vicinity of the slurry surface and expanded with drying. Crack formation was also observed in a part of the localized dry regions. Therefore, crack formation was attributed to inhomogeneous drying-induced shrinkage and stress generated in the drying object during the progression of localized drying. The novel <i>operando</i> observation technique using combined OCT-TG is successfully demonstrated to be an effective approach for understanding the internal structural changes in opaque slurries during their drying.</p>

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Review Papers 【 display / non-display

  • 波長掃引型光コヒーレンストモグラフィーによるセラミックス内部構造の非破壊評価技術

    高橋拓実, 多々見純一

    セラミックス   56 ( 1 )   7 - 10   2021.1

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   Publisher:日本セラミックス協会   Joint Work  

  • 光コヒーレンストモグラフィーによるAl2O3焼結体の内部構造観察

    高橋拓実, 多々見純一

    セラミックス   55 ( 2 )   103   2020.2

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   Publisher:日本セラミックス協会   Joint Work  

  • セラミックスプロセスチェーンの最適化のための光コヒーレンストモグラフィー観察

    高橋 拓実,多々見 純一,飯島 志行,伊東 秀高,田口 勇

    FCレポート   36 ( 2 )   62 - 67   2018.4

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (other)   Joint Work  

  • 高出力LED照明向け透明蛍光SiAlON系バルクセラミックスの開発

    高橋拓実, 多々見純一, 横内 正洋

    セラミックス   52 ( 4 )   245   2017.4

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   Publisher:日本セラミックス協会   Joint Work  

  • 高熱伝導率c軸配向Si3N4セラミックスの作製

    高橋拓実,多々見純一,田中諭

    セラミックス   51 ( 6 )   385   2016.6

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (bulletin of university, research institution)   Publisher:日本セラミックス協会   Joint Work  

Industrial Property Rights 【 display / non-display

  • 蛍光体粒子分散ガラスおよび発光装置

    多々見純一、虎瀬なつみ、高橋拓実

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    Applicant:国立大学法人横浜国立大学,地方独立行政法人神奈川県立産業技術総合研究所

    Application no:特願2019-143318  Date applied:2019.8.2

    Announcement no:特開2021-026105  Date announced:2021.2.22

    Country of applicant:Domestic  

  • 流動体試料の内部構造観察装置及び内部構造解析システム、流動体試料の内部構造観察方法及び内部構造解析方法、並びにセラミックスの製造方法

    高橋拓実、多々見純一、鷹羽紘希

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    Applicant:国立大学法人横浜国立大学,地方独立行政法人神奈川県立産業技術総合研究所

    Application no:特願2019-036998  Date applied:2019.2.28

    Announcement no:特開2020-139888  Date announced:2020.9.3

    Patent/Registration no:特許6853446  Date issued:2021.3.16

    Country of applicant:Domestic  

  • セラミックスの内部構造観察装置及び内部構造解析システム、セラミックスの内部構造観察方法及び内部構造解析方法、並びにセラミックスの製造方法

    高橋拓実,多々見純一,坂本文香,加藤真由

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    Application no:特願2018-157784  Date applied:2018.8.24

    Announcement no:特開2020-30191  Date announced:2020.2.27

    Patent/Registration no:特許第7141055号  Date registered:2022.9.13  Date issued:2022.9.22

    Rights holder:地方独立行政法人神奈川県立産業技術総合研究所、国立大学法人横浜国立大学   Country of applicant:Domestic  

  • セラミックスの内部構造観察方法、セラミックスの製造方法、解析システムおよびセラミックスの製造システム

    高橋拓実,多々見純一

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    Application no:特願2019-503067  Date applied:2018.2.28

    Publication no:WO2018/159689  Date published:2018.9.7

    Country of applicant:Domestic  

  • 窒化物蛍光体粒子分散型サイアロンセラミックス、蛍光部材

    高橋拓実,多々見純一,国分一平,横内正洋

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    Applicant:国立大学法人横浜国立大学,地方独立行政法人神奈川県立産業技術総合研究所

    Application no:特願2017-560337  Date applied:2017.8.25

    Publication no:WO2018/038259  Date published:2018.3.1

    Patent/Registration no:6500172  Date issued:2019.3.29

    Country of applicant:Domestic  

Awards 【 display / non-display

  • 第74回進歩賞

    2020.6   日本セラミックス協会   セラミックスの高機能化のための粒子集合構造制御と新規評価法

    Individual or group name of awards:高橋拓実

  • 第40回論文賞

    2022.12   粉体工学会  

    Individual or group name of awards:虎瀬なつみ、多々見純一、飯島志行、高橋拓実

  • 粉体粉末冶金協会賞第22回論文賞

    2021.6   粉体粉末冶金協会   光コヒーレンストモグラフィーによるAl2O3顆粒の一軸加圧下における粉体層中の空隙の形態変化過程のその場観察

    Individual or group name of awards:高橋拓実、多々見純一

  • 日本セラミックス協会学術写真賞優秀賞

    2019.9   日本セラミックス協会   脱脂に伴うAl2O3成形体内部構造と重量変化の同時その場観察

    Individual or group name of awards:加藤真由, 多々見純一,飯島志行,高橋拓実

  • 日本セラミックス協会学術写真賞特別賞

    2018.9   日本セラミックス協会   OCTによる焼結に伴うAl2O3成形体内部構造変化のその場観察

    Individual or group name of awards:坂本文香, 多々見純一,飯島志行,高橋拓実

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Grant-in-Aid for Scientific Research 【 display / non-display

  • 希土類添加α-サイアロンセラミックスの高透明化とレーザー材料への応用

    Grant number: 22H00257  2022.4 - 2025.3

    日本学術振興会  Grant-in-Aid for Scientific Research(A)

    Investigator(s):多々見純一

  • 蛍光性窒化物系バルクセラミックスの極低散乱透明化

    Grant number:19K22045  2019.6 - 2021.3

    日本学術振興会  Grant-in-Aid for Challenging Research (Exploratory)

    Investigator(s):多々見純一

  • Establishmentofthemethodforevaluatingfracturepropertiesofceramicsinmesoscaleandelucidationoftherelationshipbetweenthemandmicrostructuralfactors

    Grant number:17H01319  2017.4 - 2020.3

    Grant-in-Aid for Scientific Research(A)

  • Fabricationofcrystal-orientedceramicsbyusingcompositeparticlesaddedanisotropyofmagneticsusceptibilityinaninnovativelowmagneticfiled

    Grant number:26820299  2014.4 - 2016.3

    Grant-in-Aid for Young Scientists(B)

Other external funds procured 【 display / non-display

  • 劣化の学理に基づくセラミックスの信頼性革新

    Grant number:21460437  2021.10 - 2027.3

    Japan Science and Technology Agency  CREST

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    Authorship:Coinvestigator(s) 

  • OCTオペランド観測による粒子懸濁液の乾燥過程の解明

    Grant number:20107  2021.4 - 2022.3

    Private Foundations  ホソカワミクロン研究助成

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    Authorship:Principal investigator 

  • 単粒子解析を活用したレーザー照明用蛍光体の開発

    Grant number:C-5  2018.6 - 2019.5

    NEDO(New Energy and Industrial Technology Development Organization) 

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    Authorship:Coinvestigator(s) 

  • セラミックスプロセスチェーン最適化を目指した構造形成過程のリアルタイム3次元OCT観察法による理解とその制御因子の科学的解明

    Grant number:JPMJTS1614  2016.12 - 2021.3

    Japan Science and Technology Agency  A-STEPステージⅠ 産業ニーズ対応タイプ

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    Authorship:Coinvestigator(s) 

  • 革新的低磁場・静磁場配向法による高強度・高熱伝導絶縁放熱基板の開発

    2016.6 - 2018.3

    Japan Science and Technology Agency  A-STEP シーズ育成タイプ

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    Authorship:Coinvestigator(s) 

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Presentations 【 display / non-display

  • 透明Lu-α-SiAlON:Ce3+セラミックスのシンチレーション特性

    網中康平,多々見純一,飯島志行,松本昭源,伊藤暁彦,高橋拓実

    日本セラミックス協会2023年年会  2023.3  日本セラミックス協会

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    Event date: 2023.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:神奈川大学 みなとみらいキャンパス  

  • 窒化物蛍光体粒子分散h-BN/リン酸塩ガラス複合体の熱伝導率と光学特性

    多々見純一,虎瀬なつみ,飯島志行,高橋拓実

    日本セラミックス協会2023年年会  2023.3  日本セラミックス協会

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    Event date: 2023.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:神奈川大学 みなとみらいキャンパス  

  • SiO2スラリーの乾燥過程と焼結過程における内部構造の同一視野OCTその場観察

    黒田啓真,多々見純一,飯島志行,高橋拓実

    日本セラミックス協会2023年年会  2023.3  日本セラミックス協会

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    Event date: 2023.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:神奈川大学 みなとみらいキャンパス  

  • Y-α-SiAlONセラミックスの透明性に及ぼす原料Y2O3粉体の粒子径の影響

    伊藤太一,多々見純一,飯島志行,高橋拓実

    日本セラミックス協会2023年年会  2023.3  日本セラミックス協会

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    Event date: 2023.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:神奈川大学 みなとみらいキャンパス  

  • Si3N4セラミックスの粒界強度に及ぼすTiO2とAlN添加の影響

    齋藤宇宏,多々見純一,大司達樹,飯島志行,高橋拓実,矢矧束穂,中野裕美

    日本セラミックス協会2023年年会  2023.3  日本セラミックス協会

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    Event date: 2023.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:神奈川大学 みなとみらいキャンパス  

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