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This paper presents a non-contact reflected-spot method (RSM) for estimating the radius of curvature (ROC) of smooth samples. The size of the laser spot reflected by the sample was used as the basis from which to calculate the ROC. A geometric model of the proposed RSM system was fabricated and experimental results demonstrated the efficacy of this approach in measuring the ROC of convex-plano lenses...
The femto-second-laser-treated AgOx thin film is used as the plasmon-active substrate for the applications of surface-enhanced Raman scattering (SERS), molecule sensing, and photocatalyst. The proposed technique is helpful for the solar energy harvest, green energy source, and biosensing with high efficiency and throughput.
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