Abstract
The study of Frequency Selective Surface(FSS)by Direct ink writing(DIW)has attracted much atten-tion due to the convenience and effectiveness of 3D printing technology.However,the limited printing precision of DIW has heavily restricted its applications as the electromagnetic performance is highly sen-sitive to it,especially the precision at the microscale.Herein,the ultra-high printing precision of FSS was achieved through DIW by the uniformly dispersed graphene sheets to deeply modify the rheological be-havior and the steric hindrance effect.Thus,the highly precision of the printed filament width as thin as 67 μm with a space of only 42 μm were achieved,which is difficult for conventional DIW,and no struc-tural distortion is found after 3D printing,no matter it was 2D printed on a flat surface or the sharply skewed hook face,or even 3D printed to architectural structures.According to the highly improved pre-cision,the electromagnetic performance matching between the designed model and the printed physi-cal FSS device was perfectly achieved,reducing the center frequency error less than 0.3 GHz,and the transmission coefficient error less than 0.046.Our work promises an effective and easy preparation of high-quality FSS from the aid of graphene.
基金项目
国家自然科学基金(51972079)
National Key Research and Development Program of China(2017YFB0310400)
National Key Research and Development Program of China(2017YFB0310402)
NETL
NSTL
维普
万方数据