作者：Huaizhong Shen, Yuxin Wu, Liping Fang, Shunsheng Ye, Zhaoyi Wang, Wendong Liu, Zhongkai Cheng, J
关键字：none
论文来源：期刊
具体来源：RSC Adv.
发表时间：2015年

A rapid and cost e?ective method has been developed to fabricate 3 dimensional (3D) ordered structures by

photo-generating silver networks inside a 1D layered heterogeneous laminate composed of poly(vinyl

alcohol) (PVA) and poly(methyl methacrylate) (PMMA). By designing the photo-mask meticulously, the

silver nanoparticles (NPs) produced by UV light aggregate to form frameworks in di?erent forms, which

perform as the anisotropic component, i.e. the building blocks, thus converting the 1D structure into 3D.

Formation of silver NPs increases the refractive index (RI) of the PVA layers, thus bringing optical change

to the 1D laminar structure, which allows us to trace the silver formation process by measuring the

change of RI value and re?ectance spectra. The 1D layered structure is a good building matrix for 3D

construction because the total number of layers and the layer thickness can be ?nely tuned ?exibly

which allow us to further study the various properties caused by the structural modulation. By utilizing

photo-reactive silver ions, an innovative strategy of fabricating 3D structures through in situ photo-

generating silver building blocks inside the laminar matrix is established, which makes it possible to

fabricate 3D micro/nano composite materials with potential applications in ?elds such as sensors and

photonic meta-materials.