North University of China

Shanxi Zhongbei New Material Technology Co., Ltd.

Guanyu Han

Guizhe Zhao

Yaqing Liu

Chaoyang Wu

A carbon-based conductive film-based ultralight wide-angle absorbing metamaterial with full-frequency absorption within 2-18 GHz, including a first dielectric substrate, a first carbon-based conductive film array structure layer, a second dielectric substrate, a second carbon-based conductive film array structure layer, a third dielectric substrate, and a third carbon-based conductive film array structure layer, which are laminated in sequence with the first dielectric substrate as a bottom. The first, second, and third carbon-based conductive film array structure layers are each composed of discrete carbon-base conductive film patches arranged in a periodic array. A method for preparing such absorbing metamaterial is also provided.

Carbon-based conductive film-based ultralight wide-angle absorbing metamaterial with full-frequency absorption within 2-18 GHz and preparation method thereof

An artificial intelligence (AI)-based method for non-contact measurement of sheet resistance of a conductive film material, in which a non-contact measurement method commonly used in the field of electromagnetic wave absorbing-materials is adopted to measure reflection loss data of a wave-absorbing structure Salisbury screen composed of a film material and a substrate; a program-controlled AI model is adopted to predict reflection losses of Salisbury screens with different sheet resistances; the sheet resistance is continuously adjusted, and the range is gradually narrowed to fit the measured reflection loss data; and the sheet resistance of the conductive film materials is inversely deduced.

Artificial intelligence (AI)-based method for non-contact measurement of sheet resistance of a conductive film material

A lightweight absorption-transmission integrated metamaterial to electromagnetic waves with polarization stability and wide-incident-angle stability, which has a symmetric structure including at least one square frequency-selective structure-unit arranged periodically. The square frequency-selective structure-unit includes a first dielectric substrate, a metal array structure layer, a second dielectric substrate, a first carbon-based conductive film array structure layer, a third dielectric substrate, and a second carbon-based conductive film array structure layer, which are laminated in sequence with the first dielectric substrate as the bottom. A method for preparing such lightweight absorption-transmission metamaterial to electromagnetic waves is also provided.

Lightweight absorption-transmission integrated metamaterial to electromagnetic waves with polarization stability and wide-incident-angle stability, and preparation method thereof

A lightweight, low-thickness, durable, and reliable multi-band radar stealth-bulletproof integrated metamaterial includes a ceramic layer, an ultrahigh molecular weight polyethylene (UHMWPE) fiber composite bulletproof layer, a graphene-based metamaterial filter layer, an UHMWPE fiber composite attenuation layer, and a carbon fiber composite reflective layer stacked in sequence. The two UHMWPE fiber composite layers are configured to attenuate radar waves. The circuit resonance of the graphene-based metamaterial filter layer is configured to generate a passband and a stopband simultaneously. The bulletproof layer and the attenuation layer are controlled by the graphene-based metamaterial filter layer in terms of working conditions in different radar frequency bands to establish a structure capable of generating λ/4 resonance at both low and high frequencies, so as to arrive at a stealth-bulletproof integrated metamaterial with small thickness and excellent dual-band radar wave absorption capability.

Growing community of inventors

Taiyuan, China

Guanyu Han