研究目的
To improve the accuracy of determining the characteristics of photonic crystals by combining atomic force microscopy, optical spectrophotometry, and diffraction method.
研究成果
The developed combined method significantly increases the accuracy of determining the average particle size, effective refractive index, and lattice period of photonic crystals. This approach is beneficial for the characterization of photonic crystals for various applications.
研究不足
The laser diffraction method is not applicable when the lattice period is less than the wavelength of light used. The accuracy of measurements can be affected by structural defects in the photonic crystals.
1：Experimental Design and Method Selection:
The study combines atomic force microscopy (AFM), optical spectrophotometry, and diffraction method for characterizing photonic crystals.
2：Sample Selection and Data Sources:
Photonic crystals were synthesized by self-assembly of colloidal silica particles.
3：List of Experimental Equipment and Materials:
AFM, optical spectrophotometer, laser diffraction setup, and colloidal silica particles.
4：Experimental Procedures and Operational Workflow:
The photonic crystals' parameters were measured using AFM for particle size, optical spectrophotometry for transmission spectra, and diffraction method for lattice period.
5：Data Analysis Methods:
The data were analyzed using linear least-squares approximation for effective refractive index and period of the structure, and statistical methods for combining measurement errors.
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