Liquid crystal elastomers hold promise in various fields due to their reversible transition of mechanical and optical properties across distinct phases. However, the lack of local phase patterning techniques and irreversible phase programming has hindered their broad implementation. Here we introduce laser-induced dynamic crosslinking, which leverages the precision and control offered by laser technology to achieve high-resolution multilevel patterning and transmittance modulation. Incorporation of allyl sulfide groups enables adaptive liquid crystal elastomers that can be reconfigured into desired phases or complex patterns. Laser-induced dynamic crosslinking is compatible with existing processing methods and allows the generation of thermo- and strain-responsive patterns that include isotropic, polydomain and monodomain phases within a single liquid crystal elastomer film. We show temporary information encryption at body temperature, expanding the functionality of liquid crystal elastomer devices in wearable applications.

液晶弹性体由于其机械和光学性能在不同相之间的可逆转变而在各个领域具有广阔的前景。然而，局部相位图案技术和不可逆相位编程的缺乏阻碍了它们的广泛实施。在这里，我们介绍激光诱导动态交联，它利用激光技术提供的精度和控制来实现高分辨率多级图案化和透射率调制。烯丙基硫醚基团的引入使得自适应液晶弹性体能够重新配置成所需的相或复杂的图案。激光诱导的动态交联与现有的加工方法兼容，并允许在单个液晶弹性体薄膜内生成热响应和应变响应图案，其中包括各向同性、多域和单域相。我们展示了体温下的临时信息加密，扩展了液晶弹性体设备在可穿戴应用中的功能。