Switching-controllable THz wave metamaterial perfect absorber and control method thereof
A technology of terahertz wave ultra-absorber, which is applied in waveguide devices, instruments, optics, etc., can solve the problems such as inability to adjust the absorption rate, and achieve various control methods, simple production methods, and various controllable room temperature effects
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[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0029] MPA is an absorber based on MMs. It is difficult to find materials with an absorption rate close to 100% in nature, so MPA is particularly important. By designing the structural parameters of MPA and selecting appropriate materials, the impedance of MPA can be matched with the outside world, so that the reflectivity R is 0; at the same time, because the device part is made of opaque metal material, the transmittance T of MPA is also 0. According to the calculation formula of absorption rate A=1-T-R, the absorption rate A can reach 100%, achieving complete (beautiful) absorption.
[0030] T...
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