期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 111, 期 44, 页码 15630-15634出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1412240111
关键词
bioinspired optics; gratings; biophotonics
资金
- US Air Force Office of Scientific Research Multidisciplinary University Research Initiative [FA9550-09-1-0669-DOD35CAP]
- Alexander von Humboldt Foundation
Recently, diffraction elements that reverse the color sequence normally observed in planar diffraction gratings have been found in the wing scales of the butterfly Pierella luna. Here, we describe the creation of an artificial photonic material mimicking this reverse color-order diffraction effect. The bioinspired system consists of ordered arrays of vertically oriented microdiffraction gratings. We present a detailed analysis and modeling of the coupling of diffraction resulting from individual structural components and demonstrate its strong dependence on the orientation of the individual miniature gratings. This photonic material could provide a basis for novel developments in biosensing, anticounterfeiting, and efficient light management in photovoltaic systems and light-emitting diodes.
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