2results about How to "High sensitivity response" patented technology

This invention proposes a circularly polarized photodetector based on a triangular ferroelectric nanoisland structure and its fabrication method, belonging to the technical field of ferroelectric materials. It addresses the problems of traditional spintronic devices, such as reliance on external magnetic fields, low energy efficiency, complex structures, and insufficient sensitivity of existing circularly polarized photodetectors. The circularly polarized photodetector of this invention consists of a bottom electrode, a substrate, a ferroelectric layer, and a top electrode stacked sequentially from bottom to top. The substrate is an Nb-doped SrTiO3 substrate, and the ferroelectric layer is an Eu-doped BiFeO3 thin film. The Nb-doped SrTiO3 substrate and the Eu-doped BiFeO3 thin film form a p-n heterojunction. This invention achieves self-driven detection without an external bias voltage, effectively suppresses dark current, and significantly improves the axial selectivity response of circularly polarized light by utilizing the synergistic effect of the chiral geometry of the nanoislands and intrinsic spin splitting. The fabrication process is mature and facilitates large-scale integration applications.

The application belongs to the field of fluorescent probes, and discloses a kind of fluorescent probe for monitoring dynamic change of hydrogen peroxide in different subcellular organelles, preparation method and application thereof, the probe is with flavonol as parent nucleus, and hydrogen peroxide ratio type fluorescent probe PML is targeted to lysosome, and hydrogen peroxide ratio type fluorescent probe PZD is targeted to lipid droplet.The application also provides the preparation method and application of the probe.The probe provided by the application has novel structure, simple synthesis method, good recognition effect on hydrogen peroxide, especially hydrogen peroxide in subcellular organelles, fast response speed, high sensitivity, reliable inspection result, good biocompatibility, subcellular organelle positioning function, so that they can be used for monitoring hydrogen peroxide in intracellular microenvironment, and it has great significance to apply probe technology to practical related pathological model to develop the mechanism of hydrogen peroxide in its pathology, especially in the process of ferroptosis.