Heterogeneous metal mesh metamaterial structure for realizing circular dichroism
A heterogeneous metal, circular dichroism technology, applied in the field of micro-nano optics, can solve the problems of difficult manufacturing, weak circular dichroism, and difficult preparation.
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[0021] This embodiment provides a figure 1 The heterogeneous metal mesh metamaterial structure shown includes a substrate 1, the substrate 1 mainly plays a role in manufacturing, the substrate 1 is made of silicon dioxide, and the gold grating 2 and the The silver gratings 3 intersect each other, but are not perpendicular, and the silver gratings 3 are truncated by the gold gratings 2 to form a silver nanorod array;
[0022] Further, the periods and metal line widths of the structural gold and silver gratings are 400nm and 140nm respectively, and the included angle between groups of gratings is 65 degrees. The thickness of the metal layer is 50nm.
[0023] In order to further illustrate the circular dichroism characteristics of the heterogeneous metal mesh metamaterial in Example 1, this embodiment discloses its transmission spectrum and circular dichroism spectrum under the irradiation of left-handed and right-handed circularly polarized light, such as figure 2 with imag...
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Abstract
Description
Claims
Application Information
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