Controlled synthesis and understanding the growth mechanism of 1D transition metal chalcogenide aggregates

• Project/Area Number: 21K14498
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 28030:Nanomaterials-related
• Research Institution: Saitama University (2022); Tokyo Metropolitan University (2021)
• Principal Investigator: LIM Hong En 埼玉大学, 理工学研究科, 助教 (20794861)
• Project Period (FY): 2021-04-01 – 2023-03-31
• Project Status: Completed (Fiscal Year 2022)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2022: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000); Fiscal Year 2021: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
• Keywords: 化学気相成長法(CVD) / 原子細線 / 原子層物質 / 遷移金属カルコゲナイド / １次元 / 化学気相成長法

Outline of Research at the Start

均一な構造を持つ1次元物質の集合体の実現は、ナノ物質科学における重要な課題の一つであった。本研究では、遷移金属カルコゲナイド（TMC）細線の集合体の構造制御合成とその成長機構の解明に取り組む。特に、成長の元となる核や成長機構への理解は未だ不十分であり、得られる集合体のサイズの均一性や制御性の向上が精密な物性研究に向けた課題となっている。そこで、成長核の構造によって、集合体の長さや幅・厚み、そして電子輸送特性がどのように変化するか解明する。成長機構の理解を通じて、ファンデルワールス集合体の集積化に向けた位置制御、そして電子デバイス応用に向けた基盤技術を構築する。

Outline of Final Research Achievements

Controlling the morphology of the aggregates of one-dimensional van der Waals nanostructures is crucial to explore their physical properties and device applications. In this work, we focus on the growth of the ultrathin (only 3 atoms thick) transition metal chalcogenide atomic wires by using chemical vapor deposition. From the results obtained, we succeeded in (1) the growth of long, ribbon-like WTe aggregates and (2) the conversion of atomic wires into layered transition metal dichalcogenide nanoribbons via chalcogenization.

Academic Significance and Societal Importance of the Research Achievements

均一な構造を持つナノ物質の集合体の作製は、材料科学の発展において重要なテーマの一つである。ナノチューブなどの1次元物質では構造の不均一性が大きな課題となっている。一方、遷移金属カルコゲナイド原子細線は、均一な結晶構造を持ち、多様な凝集状態を形成することができる。さらに原子細線の集合体の制御と遷移金属ダイカルコゲナイドへの構造変換技術により、新しいナノ構造の合成や新奇物理現象の探求、そして次世代エレクトロニクスの応用が期待できる。

Research Products

• [Journal Article] Vapor-phase growth of one-dimensional transition metal chalcogenide wires (2023)
  • Author(s): 中西 勇介、リム ホンエン、宮田 耕充
  • Journal Title: Oyo Buturi Volume: 92 Issue: 5 Pages: 292-296
  • DOI: 10.11470/oubutsu.92.5_292
  • ISSN: 0369-8009, 2188-2290
  • Year and Date: 2023-05-01
  • Peer Reviewed
• [Journal Article] Multilayer In-Plane Heterostructures Based on Transition Metal Dichalcogenides for Advanced Electronics (2023)
  • Author(s): Ogura Hiroto、Kawasaki Seiya、Liu Zheng、Endo Takahiko、Maruyama Mina、Gao Yanlin、Nakanishi Yusuke、Lim Hong En、Yanagi Kazuhiro、Irisawa Toshifumi、Ueno Keiji、Okada Susumu、Nagashio Kosuke、Miyata Yasumitsu
  • Journal Title: ACS Nano Volume: 17 Issue: 7 Pages: 6545-6554
  • DOI: 10.1021/acsnano.2c11927
  • Peer Reviewed
• [Journal Article] Formation of a Two-Dimensional Electronic System in Laterally Assembled WTe Nanowires (2022)
  • Author(s): Shimizu Hiroshi、Pu Jiang、Liu Zheng、Lim Hong En、Maruyama Mina、Nakanishi Yusuke、Ito Shunichiro、Kikuchi Iori、Endo Takahiko、Yanagi Kazuhiro、Oshima Yugo、Okada Susumu、Takenobu Taishi、Miyata Yasumitsu
  • Journal Title: ACS Applied Nano Materials Volume: - Issue: 5 Pages: 6277-6284
  • DOI: 10.1021/acsanm.2c00377
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Nanowire-to-Nanoribbon Conversion in Transition-Metal Chalcogenides: Implications for One-Dimensional Electronics and Optoelectronics (2021)
  • Author(s): Lim Hong En、Liu Zheng、Kim Juan、Pu Jiang、Shimizu Hiroshi、Endo Takahiko、Nakanishi Yusuke、Takenobu Taishi、Miyata Yasumitsu
  • Journal Title: ACS Applied Nano Materials Volume: 5 Issue: 2 Pages: 1775-1782
  • DOI: 10.1021/acsanm.1c03160
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] MoS2ナノリボンの配向成長 (2023)
  • Author(s): 田村優奈, Hong En Lim, 上野啓司
  • Organizer: 2.5次元物質科学第4回領域会議
• [Presentation] Growth, structures, and transport properties of MoS2-based multilayer in-plane heterostructures (2023)
  • Author(s): Hiroto Ogura, Seiya Kawasaki, Zheng Liu, Takahiko Endo, Mina Maruyama, Yanlin Gao, Yusuke Nakanishi, Hong En Lim, Kazuhiro Yanagi, Toshifumi Irisawa, Keiji Ueno, Susumu Okada, Kosuke Nagashio, Yasumitsu Miyata
  • Organizer: The 64th Fullerenes-Nanotubes-Graphene General Symposium
  • Int'l Joint Research
• [Presentation] Fabrication and characterization of multilayer in-plane heterostructures based on transition metal dichalcogenides (2022)
  • Author(s): Hiroto Ogura, Seiya Kawasaki, Zheng Liu, Takahiko Endo, Mina Maruyama, Yanlin Gao, Yusuke Nakanishi, Hong En Lim, Kazuhiro Yanagi, Toshifumi Irisawa, Keiji Ueno, Susumu Okada, Kosuke Nagashio, Yasumitsu Miyata
  • Organizer: The 63th Fullerenes-Nanotubes-Graphene General Symposium
  • Int'l Joint Research
• [Presentation] Wafer-Scale Growth of 1D Transition Metal Telluride Atomic Wires (2021)
  • Author(s): Hong En Lim, Yusuke Nakanishi, Zheng Liu, Jiang Pu, Mina Maruyama, Takahiko Endo, Chisato Ando, Hiroshi Shimizu, Kazuhiro Yanagi, Susumu Okada, Taishi Takenobu, Yasumitsu Miyata
  • Organizer: The 12th Recent Progress in Graphene and Two-dimensional Materials Research Conference (RPGR 2021)
  • Int'l Joint Research
• [Presentation] Wire-to-Ribbon Conversion in Transition Metal Chalcogenides (2021)
  • Author(s): Hong En Lim, Zheng Liu, Jiang Pu, Hiroshi Shimizu, Takahiko Endo, Yusuke Nakanishi, Taishi Takenobu, Yasumitsu Miyata
  • Organizer: The 61st Fullerenes-Nanotubes-Graphene General Symposium
  • Int'l Joint Research
• [Remarks] 埼玉大学研究トピックス一覧
  • URL: https://www.saitama-u.ac.jp/topics_archives/2023-0417-2135-9.html
• [Remarks] EurekAlert!ニュース
  • URL: https://www.eurekalert.org/news-releases/986593
• [Remarks] 東京都立大学大学院理学研究科物理学専攻 ナノ物性研究室ホームページ
  • URL: https://www.comp.tmu.ac.jp/nanotube/news.html
• [Remarks] EurekAlert!ニュース
  • URL: https://www.eurekalert.org/news-releases/941258