Ultra-surface Preparation Of Ultra-Large Dielectric Microspheres And Its Regulation On Terahertz Waves

With the development of super-surface and terahertz technology,the super-surface of the medium has shown great application prospects in the fields of sensing,security,communication and military.However,limited to traditional processes,large-area preparation of medium super-surface has been a problem.This paper intends to break through the traditional process limitations and design a super-area,high-precision array medium microsphere super-surface preparation method,which can provide reference for the development of total reflection,absorbing,sensing and other fields.In this paper,dielectric microspheres and organic elastomer composites were introduced into the super-surface of large-area dielectric microspheres.Based on the Mie resonance and equivalent medium theory,by adjusting the ratio between the two components,or applying an external force to change the super-surface morphology and then changing the proportion of the components in the local space,the composite material can exhibit different resonance characteristics,with too Adjustable performance under Hertz.Based on the above ideas,this paper proposes four methods for preparing super-surface super-surface micro-spheres:based on mold"casting" preparation;based on laser perforation array preparation;based on"screen printing"preparation;large-area preparation based on network structure.And try to prepare by building a simple solid state lithography system.In addition,sample preparation was performed for various protocols and measurements were made using the TDS-THz system of the Central University of China,demonstrating that multiple samples have multi-level resonance characteristics.Using CST simulation software,a single spherical particle,a pair of spherical particles,a single-layer distributed spherical particle,a multi-layer distributed spherical particle,and a curved deformation were systematically simulated.The field distribution of the super-surface of the medium under a specific terahertz band was investigated.The resonance characteristics and the variation of resonance peak and transmittance under tensile and bending deformations verify that it has certain regulation performance.It shows certain application prospects in the direction of sensing,detection and large-area preparation.In addition,in the data processing and expandable direction of this thesis,the time domain conversion frequency domain software,terahertz parameter analysis software and terahertz imaging software are designed and implemented.