Revealing invisible photonic printing: colorful pattern shown by water

1st International Conference on New Material and Chemical Industry

材料科学;化学工业

Chen, C.^1 ; Dong, Z.Q.^1 ; Chen, Y.^1 ; Hu, X.B.^1 ; Zhu, X.R.^1 ; Zhu, Z.G.^1 ; Qian, S.H.^2 ; Shih, W.H.^3

School of Environmental and Materials Engineering, College of Engineering, Shanghai Polytechnic University, Shanghai

201209, China^1

Department of Ophthalmology, Eye and ENT Hospital, Shanghai Medical College, Fudan University, Shanghai

200231, China^2

Department of Materials Engineering, Drexel University, Philadelphia

PA

19104, United States^3

关键词: Colloidal crystals;    Cross-linking density;    Glass slides;    Non-uniform;    Photonic materials;    Polymer layers;    Visible light;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/167/1/012073/pdf
DOI  :  10.1088/1757-899X/167/1/012073

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Patterning and displaying of photonic crystals are critical for building advanced photonic materials. We developed a monolayered colloidal crystal (MCC) based photonic material through a mask-assistant photo-polymerization process. Polystyrene (PS) nanoparticles were firstly assembled on the glass slide to form highly ordered MCC, this template is invisible and could diffract visible light when infiltrated by solvent. This reversibly displaying property was successfully maintained after the MCC was surrounding by a polymer layer via photo-polymerization, meanwhile a pattern could also be printed on the polymer with the help of a mask. Such photonic printing could be reversibly shown and hidden, revealing the colorful pattern was mainly due to the non-uniform cross-linking density of the polymer.