Formation of three-dimensional ultra high-intensity optical field and novel materials

三维超高强度光场形成及新型材料

• 批准号: 23686102
• 负责人: NAKAMURA Takahiro
• 金额: $ 17.64万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (A)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011-04-01 至 2013-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23686102/
• 关键词: 非平衡プロセス; レーザープロセス; フェムト秒パルスレーザー; 合金ナノ粒子; 水溶液; 高強度レーザー; ナノ粒子合成; 超微粒子; ナノ材料; 偏光

In the present study, formation of novel materials with unexpected properties in a three-dimensional ultra-high intensity optical field which can be achieved only by high intensity femtosecond laser beam with highly-controlled phase and polarization was investigated.All-proportional solid-solution alloy nanoparticles, which is difficult to obtain by conventional method due to the miscibility gap in binary phase diagram and/or the different standard electrode potential, can be easily fabricated by high-intensity laser irradiation of solution of ions through non-linear process. And the obtained alloy nanoparticles exhibited extremely high catalytic stability during CO oxidation process. Intensity distribution of the high-energetic electric field around focal point was maintained by tightly focused phase controlled femtosecond laser pulses.

在本研究中，研究了在三维超高强度光场中形成具有意想不到的性能的新型材料，该光场只能通过具有高度控制的相位和偏振的高强度飞秒激光束来实现。由于二元相图中的可调间隙，用常规方法很难获得该值，或不同的标准电极电位，可以通过高强度激光照射离子溶液通过非线性工艺容易地制造。所得合金纳米粒子在CO氧化过程中表现出极高的催化稳定性。聚焦相位控制的飞秒激光脉冲维持了聚焦点附近高能电场的强度分布。

项目成果

Fabrication of silver nanoparticles by highly intense laser irradiation of aqueous solution

• DOI: 10.1007/s00339-011-6499-5
• 发表时间: 2011-06
• 期刊: Applied Physics A
• 作者: Takahiro Nakamura;Hideyuki Magara;Y. Herbani;S. Sato

Effect of surfactants on the stability of Rh-Pd-Pt alloy nanoparticles produced by femtosecond laser irradiation in aqueous solution

表面活性剂对飞秒激光辐照制备的 Rh-Pd-Pt 合金纳米粒子在水溶液中稳定性的影响

• 发表时间: 2013
• 作者: Md. Samiul Islam Sarker;Takahiro Nakamura;Shunichi Sato
• 通讯作者: Shunichi Sato

高強度レーザー照射によるロジウム基二元系合金ナノ粒子の作製

高强度激光辐照制备铑基二元合金纳米颗粒

• 发表时间: 2013
• 作者: Md. Samiul Islam Sarker;中村貴宏;Yuliati Herbani;佐藤俊一
• 通讯作者: 佐藤俊一

多元物質科学研究所 業績データベース

多维材料科学研究所成果数据库

高強度レーザー照射による金-コバルト合金ナノ粒子の作製

高强度激光辐照制备金钴合金纳米粒子

• 发表时间: 2012
• 作者: 千星聡;石黒三岐雄;佐藤成男;我妻和明;高杉隆幸;松本健一,ヘルバニユリアティ,中村貴宏,佐藤俊一
• 通讯作者: 松本健一,ヘルバニユリアティ,中村貴宏,佐藤俊一