Xiuhua FU, Jiulin SU, Yonggang PAN, Ben WANG, Zhaowen LIN, Gong ZHANG, Wenhan SUN. Calculation and Experimental Study on the Gradient Refractive Index of Grass Shaped Alumina Microstructure[J]. Acta Photonica Sinica, 2024, 53(7): 0731001
- Acta Photonica Sinica
- Vol. 53, Issue 7, 0731001 (2024)
Fig. 1. Formation process of grass shaped alumina
Fig. 2. Schematic of gradient refractive index structure
Fig. 3. Structural schematic of the layered platform calculation method
Fig. 4. Structural schematic of column calculation method after layering
Fig. 5. Simulation diagram
Fig. 6. Average reflectivity of different substrate temperatures under different boiling processes
Fig. 7. Cross sections of grass shaped alumina at different heights captured
Fig. 8. Schematic of center point position and binarized images of top view images at different heights
Fig. 9. Refractive index distribution and spectral curves of different compartments
Fig. 10. Fitting spectra and measured spectra
Fig. 11. Scattering curve and fitting spectra with different initial refractive indices
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Table 1. Measured average reflectance of grass shaped alumina microstructure under different substrate temperatures and boiling processes
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