Simultaneous Realization of Dynamic and Hybrid Multiplexed Holography via Light‐Activated Chiral Superstructures. Issue 5 (17th March 2022) - Chen, Peng
Abstract: As a well‐recognized technology for optical data encoding and extracting, holography has faced an ever‐growing pursuit in the miniaturization, multifunctionality, and tunability for today's abundant information. Despite infusive achievements in metahologram, simultaneous realization of dynamic tunability and high‐dimensional multiplexing is critical yet lagging behind, which becomes one bottleneck for this emerging frontier. Here, an innovative solution is proposed by integrating the limited penetration depth of light in chiral liquid crystals and their intrinsic stimuli‐responsive characteristics. Based on a photoactive chiral dopant and the asymmetric photopatterning boundary confined self‐organization, light‐activated spectrally tunable, polarization‐ and direction‐dependent holograms are created simultaneously. As a promising example for information technology, an encrypted signal light is demonstrated, where the wavelength, propagation direction, helicity of light, and reaction duration serve as customized keys for information decryption. This work extends the construction of soft hierarchical superstructures and offers a satisfactory and open‐ended scheme for the intelligent holography, inspiring advanced display, security, and communication. Abstract : A new strategy for simultaneous realization of dynamic and high‐dimensional multiplexed holography is proposed via light‐directed liquid‐crystalline chiral superstructures. Photoactive, bidirectional, polarization‐ and time‐dependent hologram is demonstrated. An encrypted signal light is further presented and decrypted into customized direction messages. This novel methodology integrates diverse multiplexing schemes into a single device, facilitating advanced display, security, and communication.