The growing demand for cryptographic security encourages the innovation of advanced materials with unique optical properties to secure information using light.Structural colors with soft materials exhibit dynamically ...The growing demand for cryptographic security encourages the innovation of advanced materials with unique optical properties to secure information using light.Structural colors with soft materials exhibit dynamically tunable optical properties in response to external stimuli,making them ideal for multi-level photonic encryption.However,most previous studies on structural color-based photonic encryption have predominantly focused on single-wavelength tuning while employing inadequate triggering methods for practical device applications.Here,we propose a chiral liquid crystal elastomer(CLCE)designed for stretching-induced multi-wavelength control to enhance photonic encryption functionality.By employing a heterogeneous configuration with thickness-modulated CLCE,we achieve multi-photonic band wavelength control under mechanical deformation.Furthermore,this method extends the tunable wavelength range beyond the visible spectrum into the infrared region and integrates a discrete multi-pixel array structure,enabling advanced spatial and spectral control for complex encryption schemes.This multi-wavelength modulation method is expected to provide significant potential for applications in photonic encryption,adaptive optics,and next-generation information security systems.展开更多
Control over geometric curvature and chirality of assemblies in pure aqueous media is key to the design of responsive materials and molecular machines.Here we show how aggregate geometric curvature and chirality of mo...Control over geometric curvature and chirality of assemblies in pure aqueous media is key to the design of responsive materials and molecular machines.Here we show how aggregate geometric curvature and chirality of motor amphiphiles could be switched from bicontinuous calabashes to nanoribbons or from vesicles to nanoribbons by modulating rotor orientation direction with dual light/heat stimuli to influence spontaneous curvature in assemblies.The photoisomerization and thermal helix inversion processes of molecular motors have been studied at the molecular level,and the transformation of supramolecular assemblies has been investigated at the microscopic level.The morphological evolution of the calabash-shaped assembly can be kinetically captured,suggesting that the bicontinuous calabash-shaped structures are different from the bowl-shaped aggregates based on solvent-driven assembly upon the addition of non-solvent or solvent.The investigation of dual optical/thermal control of rotor orientation can provide a new strategy for tuning the geometric curvature and chirality of nanoassemblies at the nanoscale,arriving ultimately the clusteroluminescence through-space electronic communication at responsive supramolecular nanosystems.展开更多
基金supported by the Samsung Research Funding&Incubation Center of Samsung Electronics under Project Number SRFC-TC2103-01Technology Innovation Program(20010690)funded by the Ministry of Trade,Industry and Energy(MOTIE,Korea)+1 种基金Samsung Electronics Co Ltd,grant number IO201211-08048-01the BK21 FOUR Program for Educational Institute for Intelligent Information Integration of the National Research Foundation of Korea(NRF)grant funded by the Korea government.
文摘The growing demand for cryptographic security encourages the innovation of advanced materials with unique optical properties to secure information using light.Structural colors with soft materials exhibit dynamically tunable optical properties in response to external stimuli,making them ideal for multi-level photonic encryption.However,most previous studies on structural color-based photonic encryption have predominantly focused on single-wavelength tuning while employing inadequate triggering methods for practical device applications.Here,we propose a chiral liquid crystal elastomer(CLCE)designed for stretching-induced multi-wavelength control to enhance photonic encryption functionality.By employing a heterogeneous configuration with thickness-modulated CLCE,we achieve multi-photonic band wavelength control under mechanical deformation.Furthermore,this method extends the tunable wavelength range beyond the visible spectrum into the infrared region and integrates a discrete multi-pixel array structure,enabling advanced spatial and spectral control for complex encryption schemes.This multi-wavelength modulation method is expected to provide significant potential for applications in photonic encryption,adaptive optics,and next-generation information security systems.
基金Science and Technology Program of Guangzhou,Grant/Award Number:201804010017National Natural Science Foundation of China,Grant/Award Number:21374137+1 种基金Natural Science Foundation of Guangdong Province,Grant/Award Number:2014A030313194Science and Technology Program of Guangdong Province,Grant/Award Number:2017A050506021。
文摘Control over geometric curvature and chirality of assemblies in pure aqueous media is key to the design of responsive materials and molecular machines.Here we show how aggregate geometric curvature and chirality of motor amphiphiles could be switched from bicontinuous calabashes to nanoribbons or from vesicles to nanoribbons by modulating rotor orientation direction with dual light/heat stimuli to influence spontaneous curvature in assemblies.The photoisomerization and thermal helix inversion processes of molecular motors have been studied at the molecular level,and the transformation of supramolecular assemblies has been investigated at the microscopic level.The morphological evolution of the calabash-shaped assembly can be kinetically captured,suggesting that the bicontinuous calabash-shaped structures are different from the bowl-shaped aggregates based on solvent-driven assembly upon the addition of non-solvent or solvent.The investigation of dual optical/thermal control of rotor orientation can provide a new strategy for tuning the geometric curvature and chirality of nanoassemblies at the nanoscale,arriving ultimately the clusteroluminescence through-space electronic communication at responsive supramolecular nanosystems.
