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Photocatalysts, which utilize solar energy to catalyze the oxidation or reduction half reactions, have attracted tremendous interest due to their great potential in addressing increasingly severe global energy and environmental issues. Solar energy utilization plays an important role in determining photocatalytic efficiencies. In the past few decades, many studies have been done to promote photocatalytic...
High-resolution measurement of refractive index has a wide range of application and employment of the plasmon resonance absorption combined with phase detection is a promising way to achieve 8-digit resolution. However, because the phase detection in light-wave frequency is not simple, we would like to report on a method of refractive-index measurement by using efficiency-alone interrogation. The...
We investigate plasmon excitation on the surfaces of a thin metal-film grating, which are sinusoidally modulated with a common period and different initial phases. Employing Yasuura's method of modal expansion, we numerically find the resonance angle, field distribution, power flow in the vicinity of the grating surfaces, and efficiency of propagating orders. By setting the amplitude of the metal-film...
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