研究目的
To develop a simple, low-cost optical design for forming high-resolution images of the gasket and sample chamber of the diamond anvil cell under high gas pressures in a gas loading apparatus.
研究成果
A simple, low-cost microscope was developed for diffraction-limited imaging of a diamond anvil cell inside a high-pressure gas loading apparatus, enabling accurate determination of DAC closure and sealing at vessel pressure with high success rates.
研究不足
The design is sensitive to the refractive index changes of the surrounding gas, requiring adjustments to maintain image focus at high pressures.
1:Experimental Design and Method Selection:
The design includes a ZnSe plano-convex lens placed inside the pressure vessel, mounted directly onto the DAC, forming a magnified real image outside the gas loading apparatus.
2:Sample Selection and Data Sources:
The DAC is placed inside the pressure vessel of the high-pressure gas loading apparatus, with samples encapsulated in a soft pressure-transmitting medium.
3:List of Experimental Equipment and Materials:
Includes a ZnSe plano-convex lens, high-pressure gas loading apparatus, diamond anvil cell, and a 5 mW red LED light source.
4:Experimental Procedures and Operational Workflow:
The lens is adjusted to form a magnified real image outside the apparatus, with the image quality optimized by addressing chromatic and spherical aberrations.
5:Data Analysis Methods:
The image quality is assessed based on the clarity of interference fringes and the ability to determine the closure of the DAC.
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