相关实验视频

Updated: Jul 9, 2026

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Published on: February 4, 2017

螺旋式表面浮雕形成由两光子聚合反应使用一个Femtosecond光学旋束

Yoshihisa Matsumoto¹, Kyoko Masui¹, Chie Hosokawa¹

¹Department of Chemistry, Graduate School of Science, Osaka Metropolitan University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan.

The journal of physical chemistry letters

|December 31, 2024

概括

研究人员使用femtosecond光学束创建了具有螺旋表面的3D微结构. 螺旋方向与轨道角动量精确匹配,使新的光学设备应用成为可能.

科学领域:

光学和光子学在光学和光子学.
材料科学材料科学材料科学
纳米技术纳米技术

背景情况:

光学是带有螺旋相波面和轨道角动量 (OAM) 的光束.
精确制造3D微观结构对于先进的光学设备至关重要.

研究的目的:

用 femtosecond 光学束来演示 3D 微观结构的形成.
研究激光参数与制造结构特征之间的关系.
探索创建螺旋形表面浮雕结构的潜力.

主要方法:

使用 femtosecond 光学束进行可光固化树脂的两光子聚合.
通过长期激光照射诱导制造.
分析由此产生的3D微结构,包括它们的形状,大小和表面特征.

主要成果:

制造的圆柱形3D微结构,其尺寸 (直径,高度) 与激光功率相关.
在结构的内部表面观察到周期性的螺旋形表面浮雕.
证明了表面浮雕的螺旋方向与OAM对齐,并取决于拓电荷标志.

结论:

开发了一种新的方法,用于制造3D微结构,在没有激光扫描的情况下,具有低衍射极限螺旋周期性表面浮雕.
螺旋式方向性提供了精确的控制,由光学的OAM指导.
这种技术有望用于创建3D合元材料和其他光学设备的应用.

更多相关视频

A Femtoliter Droplet Array for Massively Parallel Protein Synthesis from Single DNA Molecules

A Femtoliter Droplet Array for Massively Parallel Protein Synthesis from Single DNA Molecules

Published on: June 20, 2020

Microfabrication of Implantable Optics Integrated in a Microstructured Imaging Window for Advanced In Vivo Imaging

Microfabrication of Implantable Optics Integrated in a Microstructured Imaging Window for Advanced In Vivo Imaging

Published on: April 11, 2025

相关概念视频

Total Internal Reflection Fluorescence Microscopy

Total Internal Reflection Fluorescence Microscopy

Total internal reflection fluorescence microscopy or TIRF is an advanced microscopic technique used to visualize fluorophores in samples close to a solid surface with a higher refractive index, such as a glass coverslip. TIRF only allows fluorophores in proximity to the solid surface to be excited. When light from a medium with a lower refractive index (such as air) hits the glass coverslip at a critical angle, the light undergoes total internal reflection stead of passing through the glass.