The plasmonic color filter with sub-wavelength nanometal structure has the advantages that the traditional organic dye color filter cannot replace because of its unique characteristics. However, most plasmonic color filters have low selectivity and weak resonance. It limits their further applications and accuracy. We introduce a plasmonic color filter with a nanoring aperture array, which can exhibit high resonance intensity by fine-tuning the size of the outer aperture and the array period. Through COMSOL Multiphysics comprehensive verification, this may be potentially useful in micro- and nanodetection, optical imaging, optical filters, and other fields.

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具有纳米环孔径阵列的等离子体彩色滤光片

具有亚波长纳米金属结构的等离子体彩色滤光片以其独特的特性具有传统有机染料彩色滤光片无法替代的优势。然而，大多数等离子彩色滤光片的选择性低，共振弱。它限制了它们的进一步应用和准确性。我们介绍了一种具有纳米环孔径阵列的等离子体滤色器，它可以通过微调外孔径的大小和阵列周期来表现出高共振强度。通过 COMSOL Multiphysics 综合验证，这可能在微米和纳米检测、光学成像、光学滤波器等领域具有潜在用途。