Application of Bi2O2Te, biosensor and application thereof, and micro RNA detection method

The invention provides an application of Bi2O2Te, a biosensor and an application thereof, and a micro RNA detection method, and belongs to the technical field of biological detection. The existing biosensor has the problems of complex operation, low sensitivity, unstable performance and the like. According to the novel biosensor provided by the invention, a two-dimensional ferroelectric material Bi2O2Te is used as an electric sensitive layer material, and the material has the characteristics of spontaneous polarization and adjustable polarization under an external electric field, so that adjustment of SPR signals is realized. When the micro RNA molecule is combined with the surface of Bi2O2Te, the change of surface charges is caused, so that high-sensitivity detection on the Bi2O2Te is realized. The biosensor has the characteristics of simplicity in operation, high sensitivity, low detection limit and the like. 本发明提供了一种Bi2O2Te的应用、生物传感器及其应用、micro RNA的检测方法，属于生物检测技术领域。现有的生物传感器存在操作复杂、灵敏度低和性能不稳定等问题。本发明提供了一种新型生物传感器