研究目的
Investigating the use of optical vortices to twist materials into chiral nanostructures for advanced device applications.
研究成果
Optical vortices can effectively twist materials into chiral nanostructures, opening new avenues for advanced material sciences and technologies.
研究不足
The technique's efficiency and the uniformity of the nanostructures formed may vary depending on the material and the optical vortex parameters.
1：Experimental Design and Method Selection:
Utilized optical vortices with an annular spatial form and orbital angular momentum to twist materials.
2：Sample Selection and Data Sources:
Used metal, silicon, and azo-polymer as targets.
3：List of Experimental Equipment and Materials:
Included a Q-switched Nd:YAG laser, spiral phase plate, quarter-wave plate, objective lens, and confocal laser-scanning microscope.
4：Experimental Procedures and Operational Workflow:
Focused optical vortex pulses onto targets to form microneedles and chiral nanostructures.
5：Data Analysis Methods:
Observed and measured the formed structures using microscopy and spectroscopy techniques.
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scanning electron microscope
JSM-6010LA
JEOL
Used to observe the ablated surfaces with higher resolution.
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spatial light modulator
X10468-03
Hamamatsu photonics
Used to generate optical vortices for azo-polymer film experiments.
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Q-switched Nd:YAG laser
Used as the pump laser for generating optical vortices.
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spiral phase plate
Used to convert the laser output into an optical vortex.
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quarter-wave plate
Used to adjust the polarization of the optical vortex.
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objective lens
M Plan Apo NIR
Mitutoyo Co.
Used to focus the optical vortex onto the target.
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confocal laser-scanning microscope
VK-9700/VK9710GS
Keyence
Used to observe the ablated surfaces.
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