From 1D to 3D: A New Route to Fabricate Tridimensional Structures via Photo-Generation of Silver Networks
writer：Huaizhong Shen, Yuxin Wu, Liping Fang, Shunsheng Ye, Zhaoyi Wang, Wendong Liu, Zhongkai Cheng, J
keywords：none
source：期刊
specific source：RSC Adv.
Issue time：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.