公开(公告)号：US20200182790A1

公开(公告)日：2020-06-11

申请号：US16618536

申请日：2018-06-01

Applicant: VERSITECH LIMITED

Inventor： Wendi LI ,  Zhouyang ZHU ,  Shijie LI

IPC: G01N21/552 ,  B82Y15/00

Abstract: A plasmonic sensor with gradient nanostructures and a method of use thereof is provided. The gradient of shapes will induce different spectral responses at different region of the sensor and show different colors. When there is a change in the environment properties of a substance, such as refractive index, gas concentration or ion density changes, the sensor displays different images, e.g., redial intensity displays and radial color displays. An image recognition based method can be used to extract the environment property with high accuracy according to the sensor image.