Open AccessDESIGN OF A KIND OF FRACTAL FILM SETS WITH LOW-REFLECTION
Author(s) -
Yan Li,
Daihai He
Publication year - 2000
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.49.2171
Subject(s) - reflectivity , fractal , set (abstract data type) , reflection (computer programming) , ideal (ethics) , materials science , optics , selection (genetic algorithm) , computer science , mathematics , physics , mathematical analysis , artificial intelligence , philosophy , epistemology , programming language
This paper discusses the design of a kind of fractal film set showing good absorption for electromagnetic waves. Based on a simplified model, we have calculated analytically the reflectivity of the film set, and obtained a group of criterions for selection of suitable materials for the set layers so as to decrease the reflectivity. Numerical simulations have been done to obtain the reflectivity of some film sets constructed by ideal or practical materials selected according to the criterions. The results show that the reflectivity of the set decreases when the total degree number of the fractal increases. The lowest reflectivity obtained is 0.01.