We have modeled a novel reconfigurable optical absorber using the array of the rectangular nanoparticle array based on the Metal–DNA–Metal (MDM) structure and discussed the effect of the DNA composite on electric field distribution by switching to “On” and “Off” modes based on low conductivity (LC) or high conductivity (HC) attributes of the material. In this structure, we have assumed a model of the optical absorber which contains four rectangular elements and each element has two rectangular metal sections while they are a sandwich of the DNA composite. This structure is over a SiN substrate and a rectangular gold layer under the substrate is utilized for reducing the transmission in the absorber. At last, we have developed a nonlinear model while the unit cells are not similar and we compared both models of absorbers. We show that by variation of the conductivity of the DNA composite section We will be able to control the resonance frequency and the absorbance quality for the structure at the range of 200–300​ THz for wide bandwidth application. We have studied the dimension impacts on reflection and the electric field distribution and clarify how DNA composite material can be used to convey the electric field and control of the phase which is important for the optical cloak.

我们使用基于金属-DNA-金属（MDM）结构的矩形纳米颗粒阵列的阵列对新型可重构光学吸收器进行建模，并通过切换到“开”和“关”来讨论DNA复合物对电场分布的影响基于材料的低电导率（LC）或高电导率（HC）属性的模式。在此结构中，我们假设了一个光吸收器的模型，该模型包含四个矩形元素，每个元素都有两个矩形金属部分，而它们是DNA复合物的三明治。该结构在SiN衬底上方，并且在衬底下方的矩形金层用于减小吸收体中的透射率。最后，我们建立了一个非线性模型，而晶胞并不相似，并且我们比较了两种吸收器模型。我们表明，通过改变DNA复合部分的电导率，我们将能够在200-300 THz的范围内将结构的共振频率和吸收质量控制在宽带宽应用中。我们研究了尺寸对反射和电场分布的影响，并阐明了如何使用DNA复合材料来传递电场和控制相位，这对于光学披风很重要。