Development of nano-structure fabrication by laser manipulation

激光操纵纳米结构制造的发展

• 批准号: 07555342
• 负责人: SUZUKI Mikio
• 金额: $ 2.56万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07555342/
• 关键词: laser; nanostructure; optical trapping; monodisperse particle; 単分散ヘマタイト微粒子; 光マニピュレーション

Manipulation of small particles by using the laser beam is attracting considerable attention as a novel attempt constructing small objects. Under these circumstances, this study have aimed at establishing new concept and basic technology of nano-structure fabrication using the optical trapping technique for micro or nanometer scale objects.First of all, a technique was developed to arrange plural monodisperse hematite particles that were simultaneously trapped. It was observed that the particles were arranged in line without opening by a linearly focused laser beam. This arrangement was stable and can be freely moved. Although these small particles are known to cohere naturally, it was demonstrated that special arrangement that is difficult by electrostatic and/or van der Waals force is achieved by the optical trapping. Secondary, forces between two particles that were optically trapped independently by using two laser beams. The result showed good agreement with DLVO theory.The arrangement technique of small particles established in this study is achieved by an active method of the optical trapping. It is thought that this technique is useful to fabricate small objects. It was also demonstrated that the naturally acting force between two particles is well explained by the DLVO theory. We believe that our results may be very useful for the fabrication of nanometer scale objects in the future.

作为构建小物体的新颖尝试，使用激光束操纵小粒子引起了相当多的关注。在这种情况下，本研究旨在建立利用光学捕获技术制造微米或纳米尺度物体的纳米结构的新概念和基本技术。首先，开发了一种排列同时捕获的多个单分散赤铁矿颗粒的技术。通过线性聚焦激光束观察到颗粒排列成直线，没有开口。这种布置很稳定，可以自由移动。尽管已知这些小颗粒会自然凝聚，但事实证明，静电和/或范德华力难以实现的特殊排列可以通过光学捕获来实现。其次，通过使用两束激光束独立光学捕获的两个粒子之间的力。结果与DLVO理论吻合良好。本研究建立的小颗粒排列技术是通过光捕获的主动方法实现的。人们认为这种技术对于制造小物体很有用。研究还证明，DLVO 理论可以很好地解释两个粒子之间的自然作用力。我们相信我们的结果可能对未来纳米级物体的制造非常有用。

项目成果

S. Sato et al.: "Optical Trapping of Monodisperse Hematite Particles" The Review of Laser Engineering. 24.11. 57-60 (1996)

S. Sato 等人：“单分散赤铁矿颗粒的光学捕获”激光工程评论。

T.Sugimoto: "Direct measurement of interparticle forces by the optical trapping technique" Langmuir. 13. 5528-5530 (1997)

T.Sugimoto：“通过光学捕获技术直接测量粒子间力”Langmuir。

S.Sato: "Optical trapping and manipulation of microscopic particles" Optical and Quantum Electronics. 28. 1-16 (1996)

S.Sato：“微观粒子的光学捕获和操纵”光学和量子电子学。

S.Sato: "Optical trapping of mondisperse hematite particles" レーザー研究. 24. 1193-1196 (1996)

S.Sato：“单分散赤铁矿颗粒的光学捕获”激光研究 24. 1193-1196 (1996)。

S. Sato and M. Saito: "Enhanced Isotope Separation of Rubiclium by Light-Induced Drift Using Back pumping" Materials Transactions, JIM. 37.12. 1789-1792 (1996)

S. Sato 和 M. Saito：“使用反泵通过光诱导漂移增强铷同位素分离”Materials Transactions，JIM。