Diamond growth for nanoscale NMR sensing

2016 Fiscal Year Final Research Report

• Project/Area Number: 26249108
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Structural/Functional materials
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: watanabe hideyuki 国立研究開発法人産業技術総合研究所, 電子光技術研究部門, 主任研究員 (50392684)
• Co-Investigator(Kenkyū-buntansha): 伊藤 公平 慶應義塾大学, 理工学部, 教授 (30276414)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: センサー / 光機能材料 / ダイヤモンド / マイクロ波プラズマ / NMR / ホモエピタキシャル成長 / ソリッドステート

Outline of Final Research Achievements

We have been working on the development of an advanced method for growing diamond thin films, which may enable the implementation of nano NMR sensing. We have explored a method to grow homoepitaxial diamond thin films by focusing on a high purity microwave source (solid state type). The solid state microwave source has almost never been used in the diamond thin film synthesis using the microwave plasma CVD process. The magnetron power source is commonly used one currently.
We have demonstrated, through our systematic experiments on thin film synthesis, that our new method employing a high purity microwave source enables the suppression of crystal defects and the formation of extremely shallow NV centers, which have not been achieved when using the conventional magnetron source. Also we have clarified the features of the CVD process used with the solid state source.

Free Research Field

物質工学