support from the National Natural Science Foundations of China(No.52071270);the Science Fund of Shandong Laboratory of Advanced Materials and Green Manufacturing(Yantai)(No.AMGM2023F03);Guangdong Basic and Applied Basic Research Foundation(No.2021A1515410006);the Research Fund of the State Key Laboratory of Solidification Processing(NPU)(No.2022-QZ-04).
Metal-insulator-metal(MIM)cavity as a lithography-free structure to control light transmission and reflection has great potential in the field of optical sensing.However,the dense top metal layer of the MIM prohibits ...