Four-Channel Amplitude-Phase-Janus-Encrypted Acoustic Meta-Hologram
Abstract
Conventional encrypted optical and acoustic meta-holograms only focus on the encrypted hologram in amplitude channel, viz. modulating spatial amplitude to encrypt or project a holographic image, which may lead to information leakage in other channels. In this research, the unique concept of four-channel amplitude-phase-Janus-encrypted acoustic metaholograms is proposed, demonstrating remarkable capabilities of generating, encrypting, and decrypting both amplitude and phase holographic images on both sides of a metascreen. The flexible and decoupled manipulation mechanism for the amplitude-phase of the bidirectional acoustic waves used in our concept offers multiple possibilities to apply unconventional amplitude-phase-encryption methods.
In this work, our system enables single-input, two-faced four-channel encryption, which substantially increase the communication capacity of conventional acoustic holograms, and the security of amplitude-phaseencryption is demonstrated. Our work can lead to concrete applications including multi-channel acoustic field communications with high security framework, acoustic illusion and cloaking in non-transparent media, etc.
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BibTeX
@article{zeng2026fourchannel,
title = {{Four-Channel Amplitude-Phase-Janus-Encrypted Acoustic Meta-Hologram}},
author = {Haohan Zeng and Zhenyu He and Tianxiang Zhang and Xiao Guo and Xinghao Hu and Youyu Mo and Tingting Li and Feilong Mao and Haiyan Fan and Xudong Fan and Weiwei Kan and Yifan Zhu and Hui Zhang and Guodong Yin and Badreddine Assouar},
journal = {Advanced Functional Materials},
year = {2026},
month = may,
doi = {10.1002/adfm.75873},
url = {https://hal.science/hal-05773059v1},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Four-Channel Amplitude-Phase-Janus-Encrypted Acoustic Meta-Hologram
AU - Haohan Zeng
AU - Zhenyu He
AU - Tianxiang Zhang
AU - Xiao Guo
AU - Xinghao Hu
AU - Youyu Mo
AU - Tingting Li
AU - Feilong Mao
AU - Haiyan Fan
AU - Xudong Fan
AU - Weiwei Kan
AU - Yifan Zhu
AU - Hui Zhang
AU - Guodong Yin
AU - Badreddine Assouar
PY - 2026
DA - 2026/05/20
JO - Advanced Functional Materials
DO - 10.1002/adfm.75873
UR - https://hal.science/hal-05773059v1
AB - Conventional encrypted optical and acoustic meta-holograms only focus on the encrypted hologram in amplitude channel, viz. modulating spatial amplitude to encrypt or project a holographic image, which may lead to information leakage in other channels. In this research, the unique concept of four-channel amplitude-phase-Janus-encrypted acoustic metaholograms is proposed, demonstrating remarkable capabilities of generating, encrypting, and decrypting both amplitude and phase holographic images on both sides of a metascreen. The flexible and decoupled manipulation mechanism for the amplitude-phase of the bidirectional acoustic waves used in our concept offers multiple possibilities to apply unconventional amplitude-phase-encryption methods. In this work, our system enables single-input, two-faced four-channel encryption, which substantially increase the communication capacity of conventional acoustic holograms, and the security of amplitude-phaseencryption is demonstrated. Our work can lead to concrete applications including multi-channel acoustic field communications with high security framework, acoustic illusion and cloaking in non-transparent media, etc.
SN - 1616-301X
SN - 1616-3028
ER -