3results about How to "Polarization insensitive" patented technology

The invention provides a single / double-waveband switchable terahertz absorber, which comprises a reflecting layer, a dielectric layer and a pattern layer which are sequentially stacked, and is characterized in that the pattern layer comprises a first metal ring layer, a second metal ring layer and at least one VO2 layer, and the first metal ring layer and the second metal ring layer are flush with the bottom of the VO2 layer and are respectively in contact with the dielectric layer; the first metal circular ring layer is arranged in the second metal circular ring layer, one side of any VO2 layer is in contact with the outer side wall of the first metal circular ring layer, and the other side of any VO2 layer is in contact with the inner side wall of the first metal circular ring layer. According to the invention, free switching between single / double wavebands can be realized, the structure is simple, polarization is not sensitive, wide-angle absorption is realized, and the application requirements in the fields of THz communication, sensing, stealth, modulation and the like are met.

The invention relates to a liquid metal micro-channel structure and a reconfigurable metasurface reflection unit, and belongs to the technical field of artificial electromagnetic materials. The problems that when an existing micro-channel structure is applied to a metasurface reflection unit, the regulation and control state is discrete and limited, the continuous adjustment capacity is insufficient, the adjustment bandwidth is narrow, and the reflection phase shift range is small are solved. A liquid metal micro-channel structure comprises a plurality of unit micro-channel structures, and each unit micro-channel structure is of a bent cross-shaped structure and comprises a liquid storage tank and four semicircular cross arm channels. A fixed metal array of a conventional metasurface structure is replaced by a micro-channel array composed of liquid metal and a plurality of semicircular cross arm type unit micro-channel structures, and continuous reconfiguration of the metasurface reflection unit structure is achieved by controlling continuous adjustability of the liquid metal in semicircular cross arm channels. The antenna has the characteristics of polarization insensitivity, incident angle insensitivity and large reflection phase shift range.

The application discloses an image sensor based on a super-structured surface color routing. The image sensor comprises an upper super-structured surface layer and a lower pixel layer, wherein the pixel layer is composed of a plurality of pixel units arranged in cycles, each pixel unit comprises four pixels, namely R, G, B and N pixels; the super-structured surface is composed of super-structured units, and the cycle of the super-structured units is consistent with the cycle of the pixel units; the super-structured surface is used for separating incident light in the visible to near-infrared range into four colors and focusing the four colors on the four pixels respectively. The application can route incident light in the 400-1100 nanometer wave band to four image sensor pixels arranged in a 2*2 array, correspond to blue, green, red and near-infrared channels respectively, and directly realize color imaging.