The growing complexity of artificial intelligence-driven devices requires multifunctional materials that exhibit nonlinear responses to address key challenges in adaptive signal processing and energy-efficient computi...The growing complexity of artificial intelligence-driven devices requires multifunctional materials that exhibit nonlinear responses to address key challenges in adaptive signal processing and energy-efficient computing.To meet these demands,hexagonal Bi_(2)Se_(3) ceramics are synthesized with controlled thicknesses via a chemical reduction synthesis method.The aggregated Bi_(2)Se_(3) nanosheets exhibit remarkable capacitance tunability under an applied bias voltage.Moreover,a significant increase in the electromagnetic interference(EMI)shielding performance was achieved at a bias voltage,which was attributed primarily to improved electrical conductivity.At a bias voltage of 15 V and an optical power density of 200 mW/cm^(2),the average total EMI shielding effectiveness(SE_(T))of Bi_(2)Se_(3) nanosheets increases to 62.8 from 23.9 dB.The collaborative combination of multiple superior functionalities within a single material platform with tunable capacitance,dynamically tunable EMI shielding,and excellent light response endows Bi_(2)Se_(3) nanosheets with great potential for applications in intelligent storage,microelectronics,and low-light photodetectors.展开更多
基金supported by the National Natural Science Foundation of China(Nos.62175010 and 52273260)the Fundamental Research Funds of Shaanxi Key Laboratory of Artificially-Structured Functional Materials and Devices(No.AFMD-KFJJ-24201).
文摘The growing complexity of artificial intelligence-driven devices requires multifunctional materials that exhibit nonlinear responses to address key challenges in adaptive signal processing and energy-efficient computing.To meet these demands,hexagonal Bi_(2)Se_(3) ceramics are synthesized with controlled thicknesses via a chemical reduction synthesis method.The aggregated Bi_(2)Se_(3) nanosheets exhibit remarkable capacitance tunability under an applied bias voltage.Moreover,a significant increase in the electromagnetic interference(EMI)shielding performance was achieved at a bias voltage,which was attributed primarily to improved electrical conductivity.At a bias voltage of 15 V and an optical power density of 200 mW/cm^(2),the average total EMI shielding effectiveness(SE_(T))of Bi_(2)Se_(3) nanosheets increases to 62.8 from 23.9 dB.The collaborative combination of multiple superior functionalities within a single material platform with tunable capacitance,dynamically tunable EMI shielding,and excellent light response endows Bi_(2)Se_(3) nanosheets with great potential for applications in intelligent storage,microelectronics,and low-light photodetectors.
