Moire pumping in van der Waals junctions of 2D materials

2022 Fiscal Year Final Research Report

• Project/Area Number: 20H00127
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Medium-sized Section 13:Condensed matter physics and related fields
• Research Institution: The University of Tokyo
• Principal Investigator: Machida Tomoki 東京大学, 生産技術研究所, 教授 (00376633)
• Co-Investigator(Kenkyū-buntansha): 年吉 洋 東京大学, 生産技術研究所, 教授 (50282603) ; 越野 幹人 大阪大学, 大学院理学研究科, 教授 (60361797)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: グラフェン / 二次元層状物質 / MEMS

Outline of Final Research Achievements

We aimed to develop a novel system of a composite device combining 2D materials and Micro Electro Mechanical Systems (MEMS). To realize this system, the transfer of 2D materials onto MEMS is necessary. To do this, we developed a novel transfer technique of 2D materials using polyvinyl chloride (PVC). By tuning the thickness and plasticizer content of the PVC layer, we can change the pickup and releaser temperatures of 2D materials. Also, we can transfer 2D materials from PVC to PVC. Further, we are now improving the PVC transfer technique to transfer 2D materials onto the bumpy surface of MEMS systems.

Free Research Field

二次元材料

Academic Significance and Societal Importance of the Research Achievements

本研究において塩化ビニルを用いた原子層の持ち上げ及び転写法の開発が進み、二次元層状材料の転写効率が飛躍的に向上した。二次元材料の転写は基礎・応用の両面において原子層科学の根本となるものであり、転写技術の向上は本研究分野において多大な貢献をするものである。