Reductive sintering of metal oxide nanoparticles using nonlinear optical absorption

2019 Fiscal Year Final Research Report

• Project/Area Number: 16H06064
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Production engineering/Processing studies
• Research Institution: Nagaoka University of Technology (2018-2019); Nagoya University (2016-2017)
• Principal Investigator: Mizoshiri Mizue 長岡技術科学大学, 産学融合トップランナー養成センター, 特任准教授 (70586594)
• Project Period (FY): 2016-04-01 – 2020-03-31
• Keywords: フェムト秒レーザ還元 / レーザ加工 / 微細加工 / ナノ粒子 / 錯体 / 還元 / 3D金属微細造形

Outline of Final Research Achievements

Direct writing techniques of metals and semiconductors using femtosecond laser pulse-induced thermochemical reduction have been developed. When the femtosecond laser pulses were focused into the raw materials such as metal oxide nanoparticle solutions and metal complex solutions, the metals and semiconductors were precipitated at around the focal spot of the femtosecond laser pulses, resulting that two and three dimensional microstructures were directly written in air. Finally, the thermocouples consisting of Cu-Ni micropatterns with different Seebeck coefficients were developed by controlling the reduction degree of the metals.

Free Research Field

微細加工

Academic Significance and Societal Importance of the Research Achievements

本研究の目的は，フェムト秒レーザパルスが誘起する熱還元を利用して金属や半導体の大気中直接描画プロセスを創製することにある．大気中での簡便な金属・半導体パターンの直接描画形成技術は，プリンテッドエレクトロニクス分野への応用も期待できる．更には，センサなどの各種マイクロデバイスのオンデマンド製造など，次世代モノづくり技術として展開できる可能性もある．