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.

通过使用激光束对小颗粒进行操纵引起了很大的关注，因为构造小物体的一种新颖的尝试。在这种情况下，这项研究旨在使用用于微型或纳米尺度对象的光学诱捕技术来建立纳米结构制造的新概念和基本技术。首先，开发了一种技术来安排同时被捕获的复数单分散性象形颗粒。据观察，颗粒是在线排列的，而无需线性聚焦激光束打开。这种安排是稳定的，可以自由移动。尽管已知这些小颗粒自然而然地共聚，但证明了静电和/或范德华力很难通过光学诱捕来实现的特殊排列。次级，通过使用两个激光束独立于光学捕获的两个颗粒之间的力。结果表明，与DLVO理论相吻合。本研究中建立的小颗粒的排列技术是通过光学诱捕的主动方法实现的。人们认为这种技术对于制造小物体很有用。还证明，DLVO理论很好地解释了两个粒子之间的自然作用。我们认为，将来我们的结果对于制造纳米尺度对象可能非常有用。

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 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。

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)。