Super-resolution in high-contrast media

被引：31
|
作者：
Ammari, Habib [1 ]
Zhang, Hai [1 ]
机构：
[1] Ecole Normale Super, Dept Math & Applicat, F-75005 Paris, France
来源：
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES | 2015年 / 471卷 / 2178期
关键词：
super-resolution; diffraction limit; resonant medium; high contrast; TIME-REVERSAL;
D O I：
10.1098/rspa.2014.0946
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
A mathematical theory is developed to explain the super-resolution and super-focusing in high-contrast media. The approach is based on the resonance expansion of the Green function associated with the medium. It is shown that the super-resolution is due to sub-wavelength resonant modes excited in the medium which can propagate into the far-field.
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页数：11
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