材料科学
纳米技术
双层
各向同性
智能材料
同种类的
金属
膜
光学
化学
生物化学
热力学
物理
冶金
作者
Shuai Chen,Kaiming Hu,Shuzhen Yan,Tianjiao Ma,Xinlu Deng,Wenming Zhang,Jie Yin,Xuesong Jiang
标识
DOI:10.1016/j.scib.2022.10.016
摘要
Self-adaptive wrinkling modes of a metal/PAN/PDMS multilayer were demonstrated based on the theoretical studies and observed, which will pave the pathway for spontaneously regulating functional homogeneous metal surfaces. Photodynamically regulating the underlying PAN/PDMS bilayer will promote the development of chemical reprogrammable techniques and the physical dynamic adjustability of metal-patterned surfaces to realize smart optical materials. Regulating metal surfaces with micro-/nanoscale structures is of great significance for both material science and potential applications. However, the intrinsic properties of metals, such as fixed isotropic moduli and inflexible structures, in a sense present major limitations in developing next-generation smart patterned surfaces. In this work, a facile and general patterning strategy is proposed to endow insensitive metal surfaces with controllable spontaneous topologies and dynamic performance by exquisitely introducing an essential photosensitive interlayer. The arresting anthracene-containing photocrosslinking interlayer can selectively predetermine the anisotropic property of compliant bilayers without damaging metals’ homogeneous properties, and realize a changeable stiff/soft layer. Furthermore, the mechanical transition mechanism of the self-adaptive wrinkling modes in metal-based trilayer systems is revealed to pave the pathway for regulating functional wrinkled metal surfaces. This photodriven metal patterning strategy can promote the development of brand-new methods for tuning the instability of multilayered materials, and be potentially applied in smart optical devices with dynamic reflectance, including light gratings and “magic” mirrors.
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