Fabrication and Characterization of One-DImensional Transition Metal Chalcogeindies Inside Nano-Test-Tubes

2022 Fiscal Year Final Research Report

• Project/Area Number: 20H02572
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 28030:Nanomaterials-related
• Research Institution: Tokyo Metropolitan University
• Principal Investigator: Nakanishi Yusuke 東京都立大学, 理学研究科, 助教 (50804324)
• Co-Investigator(Kenkyū-buntansha): 末永 和知 大阪大学, 産業科学研究所, 教授 (00357253) ; 劉 崢 国立研究開発法人産業技術総合研究所, 材料・化学領域, 上級主任研究員 (80333904)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: ナノチューブ / 遷移金属カルコゲナイド / MoS2 / ナノワイヤー / ナノリボン / テンプレート合成 / 電子顕微鏡

Outline of Final Research Achievements

Monolayers of layered chalcogenides are an ideal two-dimensional (2D) platform for studying a variety of electronic properties and potential applications due to their rich chemistry. Similarly, 1D chalcogenides can exhibit tunable electronic properties depending on their unique morphologies and composition. However, much less has been explored about their unique geometric structure and properties due to their instability in ambient conditions.
Here we report atomically precise fabrication of 1D chalcogenides using carbon/boron-nitride nanotubes (CNTs/BNNTs) as templates. Chemically and thermally robust CNTs and BNNTs can serve as templates to promote and stabilize the bottom-up growth of 1D chalcogenides, allowing their facile handling and characterization. We have created 1D chalcogenides such as nanowire, nanoribbon, and nanotubes, and revealed thier geometric structures and unique dynamics by using transmission electron microscopy.

Free Research Field

ナノ材料科学

Academic Significance and Societal Importance of the Research Achievements

本研究によって構造が精密に制御された原子細線の新たな合成手法が確立した。この合成技術を基盤として物性研究、機能開拓を進めることにより、量子閉じ込め効果や一次元輸送現象、偏光特性などの基礎物理の理解の深化、新たな構造・原理をもつ電子デバイスの創成などへ結びつくことが期待される。