2 results about "Hyperbolic metamaterials" patented technology

This invention relates to the fields of electromagnetic shielding and micro / nano photonics, and discloses a near-field shield based on layered hyperbolic metamaterials and its fabrication method. The shield is constructed by stacking a substrate, a layered hyperbolic metamaterial, and a capping layer sequentially from bottom to top. The layered hyperbolic metamaterial is composed of alternating metal and dielectric layers, with each functional layer having a subwavelength thickness. The capping layer is located on the outermost side to provide impedance matching and physical protection. In this subwavelength layered structure, utilizing its unique hyperbolic dispersion characteristics in the operating wavelength band, external near-field evanescent waves can be efficiently coupled into volume modes within the structure, and absorbed and dissipated through the ohmic loss of the metal layers, thereby blocking electromagnetic energy penetration towards the substrate. This invention features a compact structure and process compatibility, effectively solving the problem of near-field signal crosstalk between adjacent components in high-density optoelectronic integrated circuits, and has significant application value in the electromagnetic compatibility design of on-chip optical interconnects and nanophotonic devices.

The application relates to biomedical optical imaging technology and discloses a combined imaging system based on single-turntable microscopy and near-field enhancement of metamaterials, which comprises an excitation light beam light source modulation module for outputting uniform light spots; the excitation light beam is incident to a single-turntable platform through a polarization matching module and a dichroic mirror; a pinhole is uniformly distributed along a plurality of Archimedes spiral lines on the single-turntable platform; the laser beam transmitted through the pinhole on the single-turntable platform is sequentially converged on a sample table through a cylindrical mirror, a first galvanometer, a second galvanometer and an objective lens to excite a sample to generate fluorescence; the generated fluorescence returns to the dichroic mirror along the original path and is received by the imaging module; the single-turntable platform is arranged in the conjugate plane of the objective lens; and a layered double-hyperbolic metamaterial film is arranged on the surface of the sample table. The application can significantly improve the spatial resolution to about 80 nm while maintaining the millisecond-level high frame rate.