CAJ | 학술논문

利用电化学沉积自组装法制备了具有纳米银树枝结构单元的超材料吸收器。该吸收器采用＂金属谐振结构单元层-绝缘层-金属层＂复合结构,由直径70～140nm、非周期排列的银树枝结构单元,与聚乙烯醇绝缘层和纳米银金属层组合而成。通过改变电化学沉积过程中的条件,如沉积电压和聚乙二醇-20000浓度,可以实现对超材料吸收器吸收频率点数量和吸收强度的可控调节。实验表明这种吸收器可在538和656nm实现强度为21.1%和24.8%的多频吸收。这种超材料吸收器具有制备工艺简单,制备成本低廉,样品工作面积大等特点。
이용전화학침적자조장법제비료구유납미은수지결구단원적초재료흡수기。해흡수기채용＂금속해진결구단원층-절연층-금속층＂복합결구,유직경70～140nm、비주기배렬적은수지결구단원,여취을희순절연층화납미은금속층조합이성。통과개변전화학침적과정중적조건,여침적전압화취을이순-20000농도,가이실현대초재료흡수기흡수빈솔점수량화흡수강도적가공조절。실험표명저충흡수기가재538화656nm실현강도위21.1%화24.8%적다빈흡수。저충초재료흡수기구유제비공예간단,제비성본저렴,양품공작면적대등특점。
Electrochemical deposition self-assembly method was used to fabricate a metamaterial absorber with nanoscale silver dendritic pattern unit.The metamaterial absorber is consisted of ＂unit-dielectric-metal＂ structure,which contains randomly distributed silver dendritic pattern units with diameters of 70-140nm,PVA dielectric interlayer and nanoscale silver metal plane.By means of changing the deposition conditions,such as deposition voltage and concentration of PEG,the absorption peak quantity and absorption magnitude of the metamaterial absorber can be modulated.The experiment result shows that the absorber can realize multi-frequency absorption at 538 and 656nm with the magnitude of 21.1% and 24.8%.The fabrication of this large structure area metamaterial absorber has the advantages of easy processing and low cost.