@article{Zhang2025, 
author = {Junying Zhang and Xiaoyu Wang and Jianing Cai and Xiaomei Ma and Ziyu Hu and Chengyou Lin and Song Bi and Jing Yu and Zhi-Ling Hou},
title = {Multifunctional Bi2Se3 ceramic nanosheets compatible variable capacitor and tunable EMI shielding},
year = {2025},
journal = {Journal of Advanced Ceramics},
volume = {14},
number = {12},
pages = {9221211},
keywords = {multifunction, topological insulator, Bi2Se3 nanosheets, variable capacitor, tunable electromagnetic interference shielding},
url = {https://www.sciopen.com/article/10.26599/JAC.2025.9221211},
doi = {10.26599/JAC.2025.9221211},
abstract = {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 Bi2Se3 ceramics are synthesized with controlled thicknesses via a chemical reduction synthesis method. The aggregated Bi2Se3 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/cm2, the average total EMI shielding effectiveness (SET) of Bi2Se3 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 Bi2Se3 nanosheets with great potential for applications in intelligent storage, microelectronics, and low-light photodetectors.}
}