研究目的
Investigating polystyrene’s suitability as a dielectric material for designing narrowband, infrared metasurface-based absorbers.
研究成果
Polystyrene is a suitable low-loss dielectric material for narrowband LWIR absorbers, demonstrating high absorptivity and narrow bandwidth. The study provides a foundation for further research into polystyrene-based metasurface absorbers.
研究不足
The study focused on polystyrene's properties and its application in narrowband absorbers, but did not explore other potential dielectric materials or broader spectral ranges.
1：Experimental Design and Method Selection:
The study involved characterizing processing parameters of polystyrene films and measuring their dielectric properties using spectroscopic ellipsometry.
2：Sample Selection and Data Sources:
Polystyrene films were spun on a 3 in. wafer to form thin films, with thickness and roughness measured using a profilometer.
3：List of Experimental Equipment and Materials:
Equipment included a TENCOR alphastep 200 profilometer and a WVASE MARK II variable angle spectroscopic ellipsometer. Materials included polystyrene pellets from Dow Chemical and toluene.
4：Experimental Procedures and Operational Workflow:
Polystyrene films were spun on wafers, baked, and characterized for thickness, roughness, and dielectric properties.
5：Data Analysis Methods:
The harmonic oscillator model was used to calculate the real and imaginary parts of the dielectric function from ellipsometry data.
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