Shields

About: Shields is a research topic. Over the lifetime, 1456 publications have been published within this topic receiving 10896 citations.

Small magnetless integrated optical isolator using a magnetized cobalt ferrite film

Abstract: We experimentally demonstrated a silicon optical isolator using a monolithically integrated cobalt ferrite (CFO) film as magneto-optical material, achieving an isolation ratio of 9.6 dB near 1550 nm wavelength. By virtue of the large Faraday rotation coefficient of CFO, the device has a compact footprint comparing to the current yttrium iron garnet-based isolators. Further, we demonstrated self-biased isolation by the strong remanence of CFO films, eliminating the tedious demand of an external magnet. Cobalt ferrite represents a potential alternative approach to yttrium iron garnets to realize a practical device for on-chip isolation in silicon photonic integrated circuits because of the small footprint. film as an alternative MO material to conventional garnet ferrites. We recently demonstrated the crystalline deposition by a sputtering method of CFO films on Si substrates using a magnesium oxide (MgO)

EMI Shielding Using Flexible Optically Transparent Screens for Smart Electromagnetic Environments

Abstract: Past generations of wireless systems focused largely toward power and bandwidth to support higher data rates, coverage, and quality of service. Smart electromagnetic environments, on the other hand, are aimed at meeting these expectations through modifications in the electromagnetic properties of the geometry, which were once considered an uncontrollable part of a wireless system. This is done through careful placement of smart electromagnetic structures that can constructively manipulate the propagation of electromagnetic waves. In this work, we present optically transparent electromagnetic screens for shielding applications that require visual observation. New aluminum-doped zinc oxide (AZO) thin films, that are low-loss, and optically transparent, are deposited on plastic for use as absorbing-type shields. We also present a simple and reliable technique to fabricate all-metallic single-layer reflecting-type shields. All these shields have a unique combination of shielding effectiveness (SE) and optical transparency that advance the state of the art. They can be used as curtains or walls in indoor environments, windows for autonomous vehicles and as covers to shield smart IoT devices.

It shields device alone to control eye

Abstract: The utility model provides an it shields device alone to control eye, it includes a main part support to shield the device, it corresponds the human spectacle -frame of controlling the eye respectively to be equipped with two on the main part support, every spectacle -frame is equipped with one respectively and shields the structure, and every shields the structure and all can open alone, and the spectacle -frame that corresponds does not have and shields, and the place ahead image can be seen to the human eyes that correspond, every shields the structure all can be closed alone, and the spectacle -frame that corresponds is shielded the structure and shields, and the place ahead image can't see to the human eyes that correspond The utility model discloses a shielding the device and can be used to various myopia especially among the amblyopia therapy instrument, that realizes about to eye shields convenient operation alone